Updated on 2021/11/04

写真a

 
Motoyuki Murashima
 
Organization
Graduate School of Engineering Micro-Nano Mechanical Science and Engineering 1 Assistant Professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Mechanical and Aerospace Engineering
Title
Assistant Professor

Degree 1

  1. Dr.Eng. ( 2016.3   Nagoya University ) 

Research Interests 1

  1. Tribology

Research Areas 2

  1. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Machine elements and tribology

  2. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Mechanics of materials and materials

Current Research Project and SDGs 2

  1. AI活用による摩擦予測と可視化技術の開発

  2. 摩擦低減による革新的省エネルギー機器の開発

Research History 3

  1. Nagoya University   Graduate School of Engineering Micro-Nano Mechanical Science and Engineering 1   Assistant Professor

    2017.4

  2. Nagoya University   Assistant Professor

    2016.4

  3. 日本ガイシ株式会社

    2010.4 - 2012.9

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    Country:Japan

Education 3

  1. Nagoya University   Graduate School, Division of Engineering   Department of Mechanical Science and Engineering

    2012.10 - 2016.3

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    Country: Japan

  2. Nagoya University   Graduate School, Division of Engineering   Department of Mechanical Science and Engineering

    2008.4 - 2010.3

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    Country: Japan

  3. Nagoya University   Faculty of Engineering

    2004.4 - 2008.3

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    Country: Japan

Professional Memberships 4

  1. 精密工学会

  2. 日本機械学会

  3. トライボロジー学会

  4. 精密工学会

Committee Memberships 17

  1. 日本トライボロジー学会 トライボロジー技術へのAIの活用を考える研究会   委員  

    2021.3   

  2. 国際会議MIPE 実行委員   懇親会&現地企画委員会 副委員長  

    2021.3 - 2022.6   

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    Committee type:Academic society

  3. 日本トライボロジー学会 日中トライボロジーシンポジウム実行委員会   委員  

    2019.10   

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    Committee type:Academic society

  4. 日本トライボロジー学会 日中トライボロジーシンポジウム実行委員会   委員  

    2019.10   

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    Committee type:Academic society

  5. 日本機械学会 機素潤滑設計部門 委員長会議   委員  

    2019.4 - 2021.9   

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    Committee type:Academic society

  6. 日本機械学会 機素潤滑設計部門 運営委員会   委員長  

    2019.4 - 2021.3   

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    Committee type:Academic society

  7. 日本機械学会 機素潤滑設計部門 技術企画委員会 幹事   幹事  

    2019.4 - 2021.3   

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    Committee type:Academic society

  8. 日本機械学会 2020年度年次大会実行委員会   委員  

    2019.4 - 2020.10   

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    Committee type:Academic society

  9. 日本機械学会 2020年度年次大会部門委員会   委員長  

    2019.4 - 2020.9   

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    Committee type:Academic society

  10. 日本トライボロジー学会 日台シンポジウム企画委員会   委員  

    2019.4 - 2019.9   

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    Committee type:Academic society

  11. 日本機械学会 機素潤滑設計部門 技術企画委員会   委員  

    2018.4   

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    Committee type:Academic society

  12. 日本機械学会 機素潤滑設計部門 広報委員会   委員  

    2018.4 - 2021.3   

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    Committee type:Academic society

  13. ICMDT2019 Conference Comittee   委員  

    2018.4 - 2019.4   

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    Committee type:Academic society

  14. 日本トライボロジー学会 トライボロジー会議秋 伊勢実行委員会   委員  

    2017.6 - 2018.11   

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    Committee type:Academic society

  15. 日本トライボロジー学会 表面力研究会   委員  

    2017.4   

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    Committee type:Academic society

  16. 日本トライボロジー学会 編集委員会   校閲幹事  

    2016.4 - 2019.6   

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    Committee type:Academic society

  17. 日本トライボロジー学会 トライボロジー会議春 実行委員会   実行委員  

    2016.4 - 2018.6   

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    Committee type:Academic society

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Awards 26

  1. 2020年度日本機械学会東海支部功労賞

    2021.3   日本機械学会東海支部  

  2. 最優秀発表

    2020.9   日本機械学会 機素潤滑設計部門 卒業研究コンテスト   反射分光摩擦面その場観察装置によるMoDTC含有潤滑油下におけるトライボフィルムの分析と摩擦に及ぼす影響の解明

    橋詰直弥,梅原徳次,野老山貴行,村島基之

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    Award type:Award from Japanese society, conference, symposium, etc. 

  3. 最優秀発表

    2020.9   日本機械学会 機素潤滑設計部門 卒業研究コンテスト   ta-CNx膜のベース油中摩擦における潤滑油温度の摩擦係数,油膜厚さ及び構造変化層の分極率に及ぼす影響

    村瀬良,梅原徳次,野老山貴行,村島基之,李義永

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    Award type:Award from Japanese society, conference, symposium, etc. 

  4. 優秀発表

    2020.9   日本機械学会 機素潤滑設計部門 卒業研究コンテスト   窒素イオンビームFCVA法によるta-CNx膜の膜質と耐摩耗性に及ぼす照射角度の影響

    平田航大,梅原徳次,野老山貴行,村島基之,李 義永

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    Award type:Award from Japanese society, conference, symposium, etc. 

  5. 論文賞

    2020.5   日本トライボロジー学会   ベース油中CNxの摩擦界面その場反射分光分析による摩擦メカニズムの解明

    岡本竜也,梅原徳次,村島基之,斉藤浩二,眞鍋和幹,林圭二

  6. 学生奨励賞

    2020.11   日本トライボロジー学会   グリセリン及びリン酸骨格構造を有する新規添加剤によるa-C:H膜の潤滑油中トライボロジー特性

    蟹 拓実,野老山貴行,梅原徳次,村島基之,李義永,八木下和宏

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    Award type:Award from Japanese society, conference, symposium, etc. 

  7. 優秀ポスター賞

    2019.10   日本トライボロジー学会   模擬摩耗粒子を用いた転がり摩擦しゅう動部その場観察

    布施谷尚也,梅原徳次,野老山貴行,村島基之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  8. 優秀ポスター賞

    2019.10   日本トライボロジー学会   タンタル元素結合状態が ta-CNx 膜の摩擦特性に及ぼす影響

    北條孝樹,梅原徳次,野老山貴行,村島基之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  9. 優秀ポスター賞

    2019.10   日本トライボロジー学会   模擬摩耗粒子を用いた転がり摩擦しゅう動部その場観察

    布施谷尚也, 梅原徳次, 野老山貴行, 村島基之

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  10. Best Poster Award

    2019.9   Committee of International Tribology Conference Sendai 2019   Effect of Multiple Damages on AI Learning to Realize Stable Friction with Active Morphing Surface -Smart Surface-

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  11. Best Research Paper Award

    2019.7   Committee of The 15th IFToMM World Congress   Effect of Carbonaceous Hard Coatings Overcoat on Friction and Wear Properties for Al Alloy Sliding Bearing in Oil Lubrication

    N. Umehara, T. Kitamura, S. Ito, T. Tokoroyama, M. Murashima, M. Izumida and N. Kawakami

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  12. Tribology Online Awards

    2019.5   Effect of Electric Field on Adhesion of Thermoplastic Resin against Steel Plate

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  13. 奨励賞

    2019.5   日本トライボロジー学会  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  14. 奨励賞(研究)

    2019.4   日本機械学会  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  15. 日本機械学会 機素潤滑設計部門 卒業論文コンテスト 最優秀講演賞

    2018.9   日本機械学会 機素潤滑設計部門   二液分離油の反射分光摩擦面その場観察装置を用いたしゅう動部油膜その場分析

    山田高澄,梅原徳次,野老山貴行,村島基之,佐藤卓, 大原健司, 羽生田清志

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  16. 日本機械学会 機素潤滑設計部門 卒業論文コンテスト 優秀講演賞

    2018.9   日本機械学会 機素潤滑設計部門   カーボンファイバーブラシを用いたDLC膜研磨手法の開発に向けた基礎検討

    今泉友佑,村島基之,野老山貴行,梅原徳次

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  17. 日本機械学会 東海支部 奨励賞

    2018.3   日本機械学会 東海支部  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  18. ディーップテックグランプリ ファイナリスト

    2017.9   リバネス  

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    Country:Japan

  19. 日本機械学会 機素潤滑設計部門 卒業論文コンテスト 優秀講演賞

    2017.9   日本機械学会 機素潤滑設計部門  

    後藤康明,梅原徳次,村島基之,上坂裕之

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  20. WTC Best Poster Award

    2017.9   World Tribology Congress  

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    Award type:Award from international society, conference, symposium, etc.  Country:China

  21. 日本機械学会 機素潤滑設計部門 奨励講演賞

    2016.4   日本機械学会 機素潤滑設計部門  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  22. トライボロジー秋の学校 最優秀ポスター賞

    2013.11   日本トライボロジー学会   電圧印加による熱可塑性樹脂の金型に対する付着力制御手法の開発

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  23. Best presentation award

    2013.10   リーディング大学院フロンティア宇宙開拓リーダー養成プログラム若手リトリート  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  24. Best interdisciplinary presentation award

    2013.10   リーディング大学院フロンティア宇宙開拓リーダー養成プログラム若手リトリート  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  25. 日本材料学会 東海支部 優秀講演賞

    2010.3   日本材料学会 東海支部   カーボンナノチューブ一次元接合体の機械・電気特性に関する第一原理計算

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  26. 特別功労賞

    日本機械学会 東海支部  

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Papers 269

  1. New in situ low-friction technology for diamond-like carbon coatings using surface discharge treatment in ambient air Reviewed

    Motoyuki Murashima, Shintaro Oyama, Hiroyuki Kousaka, Takayuki Tokoroyama, Woo-Young Lee, Noritsugu Umehara

    Tribology International     2022.1

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1177/13506501211013126

  2. In situ observation of the formation of MoDTC-derived tribofilm on a ta-C coating using reflectance spectroscopy and its effects on friction

      Vol. 162   2021.10

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  3. Wear acceleration of a-C:H coatings by molybdenum-derived particles: Mixing and temperature effects

      Vol. 159   2021.7

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  4. Active friction control in lubrication condition using novel metal morphing surface

      Vol. 156   2021.4

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  5. Nanotextured Mold Surface with DLC Coating for Reduction in Residual Ceramic Particles

      Vol. 37 ( 12 ) page: 3563 - 3574   2021.3

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  6. The Clarification of Friction Mechanism in Oil Lubrication for CNx Coating by In-Situ Observation of Friction Area with Reflectance Spectroscopy

      Vol. 16 ( 1 ) page: 49 - 58   2021

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  7. The Tribological Properties of Hydrogenated DLC Coating Lubrication with Additive Having Glycerol and Phosphonate Structure

    KANI Takumi, TOKOROYAMA Takayuki, UMEHARA Noritsugu, MURASHIMA Motoyuki, LEE Woo-Young, YAGISHITA Kazuhiro

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 66 ( 7 ) page: 570 - 578   2021

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    Language:Japanese   Publisher:Japanese Society of Tribologists  

    <p>In general, several mechanical parts are subjected to friction and wear. To prevent wear and high friction coefficient under lubrication, additives can work to reduce friction force, to build up thin film on surfaces which is so-called tribofilm. Recently, Diamond-Like Carbon (DLC) is focused because it has excellent low friction and high wear proof as solid lubricant. However, several researchers already reported that tetrahedral amorphous carbon (ta-C) showed abnormal wear when it rubbed with glycerol mono-oleate (GMO) that is a kind of additive, although it showed very low friction coefficient. To improve tribological properties, new additives were developed that had both phosphate-oxide structure derived from ZnDTP which had high wear resistance and hydroxyl group derived from GMO in one structure. To clarify the effects of the additives, friction tests were performed fixed-roller-on-disk type rotating friction tester. In the friction tests, hydrogenated amorphous carbon (a-C:H) disks, and a-C:H coated rollers were used under boundary lubrication condition at 20-80°C. Friction tests were conducted in Poly-α-olefin (PAO) oil with each GMO and the additives. The results exhibited that a-C:H gave ultra-low friction with the additive. Elemental analysis of the surface showed that tribofilm of phosphorus and oxygen was detected on the a-C:H surface in the additive used condition.</p>

    DOI: 10.18914/tribologist.21-00001

    CiNii Article

  8. Evaluation of Mechanical Characteristics of Tribofilm Formed on the Surface of Metal Material Due to Friction under Lubrication with Automatic Transmission Fluid

    TOKOROYAMA Takayuki, NISHIMOTO Takashi, MURAKAMI Yasuhiro, HONDA Akiyuki, MITSUI Hideaki, TERAI Yusuke, MURASHIMA Motoyuki, LEE Woo-Young, UMEHARA Noritsugu

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 66 ( 6 ) page: 461 - 469   2021

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    Language:Japanese   Publisher:Japanese Society of Tribologists  

    <p>In this study, nano-scratch tests were conducted using atomic force microscope (AFM) to clarify the hardness of a tribofilm derived from an additive (Fluid A or Fluid B in automatic-transmission fluid) formed on an SKS3 cold work tool steel substrate surface. Comparisons between nano-indentation hardness tests and AFM nano-scratch tests were performed for each specimen. Prior to these tests, the tribofilms on the SKS3 substrate were examined with energy-dispersive spectroscopy (EDS). In order to calculate the hardness of the tribofilm from the nano-scratch results, we assumed that the AFM diamond tip acted as an abrasive to plough the tribofilm. The phosphorus-derived tribofilm formed from Fluid A was harder than the sulfur-derived tribofilm from Fluid B, and it was calculated that the phosphorus-derived tribofilm was approximately 2.64 GPa and the sulfur-derived tribofilm was 1.89 GPa. After 10 nano-indentation hardness tests on each tribofilm, the maximum indentation depth into the tribofilm formed from Fluid A was approximately 31 nm, while it was approximately 36 nm for Fluid B. These results are qualitatively consistent with the hardness results obtained by the AFM nano-scratch test method.</p>

    DOI: 10.18914/tribologist.20-00020

    CiNii Article

  9. ESEM内摩擦における凝集液滴で評価したカーボン系硬質膜の摩擦痕表面エネルギーと摩擦係数の関係 Reviewed

    梅原徳次,中尾太一,寺田真,上坂裕之,村島基之

    トライボロジスト     2021

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (scientific journal)  

  10. Development of a new DLC surface treatment method with electric discharge for short running-in and friction reduction Reviewed

    Motoyuki Murashima, Misato Maeda, Deng Xingrui, Noritsugu Umehara, Hiroyuki Kousaka

    Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology     2021

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1177/13506501211013126

  11. The Surface Enhanced Raman Scattering Analysis for Carbonaceous Coating by Using Au Nano-Particles

      Vol. 15 ( 5 ) page: 300 - 308   2020

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  12. Development of friction stabilization control using genetic algorithm and contact point control method

        2020

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    Language:Japanese  

    DOI: 10.1115/LEMP2020-8602

    Scopus

  13. Development of Surface Roughness Generation Model for CFRTP Manufactured by LFT-D

      Vol. 14 ( 2 ) page: 208 - 216   2020

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  14. Low friction realised by hydrogen-ended dlc surface through photocatalyst effect in water lubricated condition

        2020

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    Language:Japanese  

    DOI: 10.1115/LEMP2020-8537

    Scopus

  15. Preventing coagulated-blood adhesion on a coated electrosurgical knife

    TOKOROYAMA Takayuki, KOBAYASHI Masahiro, MURASHIMA Motoyuki, UMEHARA Noritsugu, OGAWA Koki, YOROZU Takayuki, UCHIDA Junichi

    Transactions of the JSME (in Japanese)   Vol. 86 ( 889 ) page: 20 - 00273-20-00273   2020

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    Language:Japanese   Publisher:The Japan Society of Mechanical Engineers  

    <p>In the past several decades, electro medical equipment has been developing to enhance surgical technologies. Using electro surgical knife is very common in everywhere of medical scene now a days. An electro surgical knife is consisted with power supply, metal tip and return electrode. In the case of using it to stop bleeding by coagulation mode, the tip surface is frequently covered by coagulated blood, then it is not able to discharge again. It means that the surgeons should replace it to new metal tip to continue surgical operation. In order to overcome this problem, some tips are covered by silicon type coating to prevent coagulated blood adhesion. However, it still has problems of continuous using, low heat invasiveness for human organs and how design such tip surface. In this study, three different type coating tips and a non-coated tip were prepared to compare temperature rising abilities and coagulated blood adhesion on the surface. As a result, fully surface coated types and blade's edge uncovered type realized excellent prevention ability of blood coagulation adhesion onto surface. Especially for the side edge uncovered type, it exhibited low temperature rising ability after the temperature exceeded 100 degree C. This result indicated that side edge uncovered type is one of the suitable design to prevent exceed temperature rising.</p>

    DOI: 10.1299/transjsme.20-00273

    CiNii Article

  16. The tribological property of DLC under lubrication with GDOP and GDTP additives having glycerin and phosphate structure

    KANI Takumi, TOKOROYAMA Takayuki, UMEHARA Noritsugu, MURASHIMA Motoyuki, YAGISHITA Kazuhiro

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    Language:Japanese   Publisher:The Japan Society of Mechanical Engineers  

    <p>In general, several mechanical parts are subjected to friction and wear. To prevent unfavorable wear and high friction coefficient, additives can work to reduce friction force, to build up thin film on the surfaces which is so-called tribofilm. Recently, Diamond-Like Carbon (DLC) is focused because it has excellent low friction and high wear proof as solid lubricant. However, several researchers already reported that ta-C showed abnormal wear when it rubbed with GMO that is a kind of additive, although it showed very low friction coefficient. To improve friction property, GDTP and GDOP was developed that has structure of GMO and dithio-phosphate functional group derived from ZnDTP which has high wear resistance. To clarify the effects of GDOP, we performed XPS analysis after the friction tests. In the friction tests, an a-C:H coating, and SUJ2 balls were used under boundary lubrication condition at 20, 50 and 80 ℃, and applying normal load was 1 N. Friction tests were conducted in PAO (Poly-α-olefin) oil, PAO with each GMO, GDTP and GDOP additives. In PAO with GDOP situation, the friction coefficient decreased down to 0.05. And the specific wear rate of SUJ2 ball was larger than with GMO and GDTP. The result of XPS analysis, although the binding energy of PO<sub>4</sub> was observed, that of FePO4 was hardly observed. This suggests that when GDOP was added, the tribofilm that increased friction coefficient was not formed because PO4 and Fe hardly reacted. As a result, the wear of an SUJ2 ball was small volume.</p>

    DOI: 10.1299/jsmemecj.2020.S11311

    CiNii Article

  17. Tribological properties between a-c:h coatings and SIO2 at high temperature

    Umehara N., Konishi K., Murashima M., Tokoroyama T.

    JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020     2020

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    Language:Japanese   Publisher:JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020  

    Tribological properties of a-C:H coatings has been investigated in various friction conditions. It is clear that temperature and mating materials give effects on tribological properties. In this study, we especially focus on the effect of mating material on its tribological properties of a-C:H coatings. Ball-on-disk friction test is conducted between a-C:H coating and 5 kinds of mating material, which is SiC, SiC(O)_800(SiC oxidized at 800oC), SiC(O)_1050oC, SiC(O)_1300oC, and Quartz glass. It is found that a-C:H coatings shows low friction coefficient and low specific wear rate when O/Si ratio of the element content of mating material is 2, in other words, mating material is SiO2. In the wear scar of a-C:H coating after friction test with SiC, severe damage was confirmed. It is considered that a-C:H coating and SiO2 show low adhesion even at high temperature, which leads low friction and wear. Compared SiC(O) with Quartz, the friction coefficients with a-C:H coatings are respectively 0.013 and 0.038. Even though SiC(O) and Quartz are both SiO2, the tribological properties are different. On the wear track of SiC(O), transferred things from a-C:H coating are confirmed.

    DOI: 10.1115/LEMP2020-8522

    Scopus

  18. The proposal of two different-sized abrasives to shorten polishing-process-time and reduce manufacturing cost

    Tokoroyama T., Takeno H., Umehara N., Murashima M., Chiba S.

    JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020     2020

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    Language:Japanese   Publisher:JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020  

    Polishing manufactures use abrasives such as diamond or other hard materials to flatten several materials. Generally, diamond abrasive is most popular and it is costly. Although, diamond abrasives are costly, manufacturer have to use it to reduce surface roughness such as high hardness ceramics and others. In the polishing process, it is unpopular to retrieve those abrasives from reservoir of after-using them. Therefore, using diamond abrasives account for majority of processing cost. One of the concept to overcome the cost problem, it is suggested that reducing high-cost diamond abrasives and replacing cheap and soft abrasives can reduce processing-cost. In this study, to reveal the possibility of such two different-sized abrasives polishing process, polishing tests were conducted to unearth an effect of two-hardness-abrasive polishing technique to a glass disk on reducing surface roughness. An average diameter of 127 m GC, and 1.0 m diamond abrasive were prepared as concept abrasives. As a result, the arithmetic mean roughness of the glass quickly decreased in the case of using 127 m GC abrasive with 1.0 m diamond abrasive compared to only GC or only diamond abrasives.

    DOI: 10.1115/LEMP2020-8607

    Scopus

  19. The influence of defects in ta-c coating deposited by fcva method on their tribological behavior

    Lee W.Y., Jang Y.J., Tokoroyama T., Murashima M., Umehara N.

    JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020     2020

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    Diamond like-carbon (DLC) coatings is a form of amorphous consisting of sp2-bonded and sp3-bonded phase. Among the DLC series, DLC coatings containing a large percentage of sp3 ratio, referred as tetrahedral amorphous carbon (ta-C) coatings, have attracted significant attention as protective coatings in various fields such as tribological applications and automobile components that demand superior durability, chemical inertness and low friction at high temperature. Particularly, the filtered cathodic vacuum arc (FCVA) technique with an energetic plasma can deposit the ta-C coating, but it has a drawback such as decreasing deposition rate and occurring macroparticles. Research on morphological and structural change of defects in ta-C coatings fabricated by FCVA is important for understanding their wear and friction behavior. In this study, the types of defects presented on a ta-C coating were classified as spike, droplet and pore with their morphology, structural and mechanical properties. The tribological behavior of the coating was characterized by ball-on-disk test using a Si3N4 ball at a testing temperature of 170 °C. In order to confirm the effect of defects in the ta-C coating on the tribological behavior, the defects in a designated area were investigated as a function of different sliding cycles. Initially, a running-in cycle is maintained until 2,000 cycles, following which a steady-state value of 0.1 is observed from sliding cycles of 2,000 to 10,000. At the end of 10,000 cycles, the wear rate of the ta-C coating is 4.3×10-6 mm3/Nm. Structural changes among the defects are apparent on droplet and pore after the friction test at 170 °C. The nodular defects including spikes and droplet is grinded off on top surface of that and is retained until 1,000 cycles. In steady state up to 6,000 cycles, droplet was survived, on the other hand, the spikes are almost polished from sliding.

    DOI: 10.1115/LEMP2020-8591

    Scopus

  20. Effect of doped tantalum in ta-CNx film or tantalum as counterpart material on the friction and wear properties of ta-CNx

    HOJO Koki, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki

    Transactions of the JSME (in Japanese)   Vol. 86 ( 888 ) page: 20 - 00018-20-00018   2020

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    Language:Japanese   Publisher:The Japan Society of Mechanical Engineers  

    <p>In order to clarify the effect of Ta (tantalum) content on the friction and wear characteristics of the ta-CNx (tetrahedral amorphous carbon nitride) coating, an IBA-FAD (Ion Beam Assisted Filtered Arc Deposition method) was applied to generate hard carbonaceous coating to achieve low friction coefficient in ambient air. Following research works clarified that Ta containing carbon nitride (CNx:Ta) showed friction coefficient lower than 0.05 in ambient air, however, the coating only had around 10 GPa hardness which was assumed to be soft in industrial fields. To confirm Ta containing to the ta-CNx coating on friction and wear properties, ta-CNx:Ta coating was synthesized by IBA-FAD and an arc plasma gun which supplied different amount of Ta by using pulse discharge technique (100 or 200 pulse/min.). The hardness of ta-CNx was approximately 54 GPa, then the hardness of Ta containing ta-CNx became softer than ta-CNx such as approximately 33 GPa (ta-CNx:Ta200). After the ball-on-disk friction test between those coatings and SUJ2 disk, a specific wear rate of those coatings did not along with its hardness. From the XPS (x-ray photoelectron spectroscopy) analysis, oxygen/carbon ratio of the topmost coating surface decreased by containing Ta. Those results implied that Ta in the coating may have a possibility to prevent oxidation of carbonaceous coating. The friction coefficient of ta-CNx, ta-CNx:Ta100 and ta-CNx:Ta200 showed around 0.15 during friction test. To confirm the importance of Ta transformed layer on low friction property, friction test between ta-CNx coating and thin Ta coated SUJ2 disk was conducted. The friction coefficient of the pair became the lowest among them which value was approximately 0.08.</p>

    DOI: 10.1299/transjsme.20-00018

    CiNii Article

  21. Effect of lubricating oil temperature on friction coefficient, oil film thickness, and polarizability of transformed layer in friction of ta-CNx film in base oil

    MURASE Ryo, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki, LEE Wooyang

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>The low friction mechanism of ta-CNx film is strongly affected by the polarizability of the transformed layer and the oil film thickness. The purpose of this study was to clarify the effect of lubrication temperature change on the polarizability and oil film thickness of the transformed layer and the mechanism of oil film thickness increase with increasing polarizability. Using a reflection spectral friction surface in-situ observation device, a friction test was performed while changing the lubricating oil temperature, and the relationship between each parameter was determined. As a result, the correlation between the polarizability of the structure change layer and the oil film thickness is weak, and the correlation between the product of the polarizability of the structure change layer and the lubricant and the oil film thickness is strong. It was also found that the van der Waals force strongly affected the oil film thickness because the product of polarizability is included in the formula of the van der Waals force.</p>

    DOI: 10.1299/jsmemecj.2020.S11517

    CiNii Article

  22. The Micro-meter-sized Asperities manufactured by AC Electric Field for PVC-Containing Organic Solvent

    YAMADA Yusei, TOKOROYAMA Takayuki, UMEHARA Noritsugu, MURASHIMA Motoyuki

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>In order to create an inexpensive micrometer-sized plastic asperities, a polyvinyl chloride solvent dissolved in acetone was prepared so that the solvent droplet was put on silicon substrate and placed between parallel plate electrodes. The effects of concentration, DC/AC and their combination voltage on the creation of micrometer-sized plastic asperities were clarified. As a result, asperities with a height of more than 10 μm were observed from a solvent concentration more than 2.51 mg/ml. It was found that the asperities height increased linearly from around 10 μm to 14 μm with the applied voltage of 0.1 kV/mm to 2.0 kV/mm between the parallel plate electrodes. The effect of DC or AC of 2.0 kV/mm on asperities height and number per unit area were conducted, then the height of asperities decreased from 14 μm to 10 μm when frequency was applied to 11 Hz. To confirm the effect of applying AC voltage on motion of the solvent droplet, high-speed camera observation was carried out. It was revealed that the droplet oscillated by applied AC voltage between parallel plates. The dimensionless height of the droplet increased and reached a maximum at AC 11 Hz.</p>

    DOI: 10.1299/jsmemecj.2020.S11532

    CiNii Article

  23. New Droplet Removal Polishing Method for Diamond-Like Carbon with Carbon Fiber Brush

      Vol. 14 ( 2 ) page: 190 - 199   2020

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  24. The Effects of Metal Surface Roughness on the Beginning Characteristic of Sliding Friction against Rubber Material under Oil Lubricated Condition

    SASO Tomohiro, MURASHIMA Motoyuki, UMEHARA Noritsugu, TOKOROYAMA Takayuki, FUCHI Shoichiro, KANESAKI Ryota, OKIDATE Ryo

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>In this research, we elucidated the effect of the surface roughness on the friction against deteriorated and non-deteriorated rubber, and proposed the optimal surface characteristics for better friction properties. Unidirectional friction test was conducted by using S35C carbon steel-based samples with 3 different surface roughness against as-received and deteriorated ethylene propylene diene monomer rubber (EPDM) under polyalphaolefin (PAO4) lubricated condition with normal load of 20 N at a constant sliding speed of 0.24 m/s. The sample with positive skewness and kurtosis around 3 showed the highest static coefficient of friction (CoF) about 0.13 against both as-received and deteriorated rubber. However, the sample with negative skewness showed comparatively low CoF against as-received rubber. This is because the surface possesses narrow valley shapes into which rubber is unable to intrude. On the other hand, the valley shape on the sample with positive skewness is comparatively wider, resulting in a larger real contact area with the soft rubber. Consequently, we concluded that the surface with both positive skewness and kurtosis around 3 can be optimum to achieve a high static CoF against rubber material.</p>

    DOI: 10.1299/jsmemecj.2020.S11331

    CiNii Article

  25. Enhancement of speed of surface roughness improvement by using a two mixed abrasive slurry method to polish glass surfaces

    TAKENO Hiroaki, TOKOROYAMA Takayuki, MURASHIMA Motoyuki, UMEHARA Noritsugu, CHIBA Shogo

    Journal of the Japan Society for Abrasive Technology   Vol. 64 ( 8 ) page: 428 - 435   2020

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    <p>This study was performed to find a method to reduce the consumption of expensive diamond abrasive grains in polishing glass substrates, and to mix low-hardness abrasives with diamond abrasives to reduce costs and achieve early improvement of surface roughness. The effects of the size of the GC abrasives (approximately 127 &mu;m, 75 &mu;m, and 13 &mu;m), abrasive concentration, and types of abrasives (WA and B<sub>4</sub>C) were clarified for low-hardness abrasives. The abrasive grains were fluorescently stained with rhodamine B to determine their behavior on the polished surface in-situ. The results indicated improved surface roughness by using two types of mixed abrasive grains. In addition, the large-grain GC abrasives moved or were shown to be trapped in the gaps of the fibers of the natural silk polishing pad used for polishing. On the other hand, diamond grains with an average grain size of 1.0 &mu;m moved between the natural silk polishing pad and the glass substrate regardless of the fiber orientation.</p>

    DOI: 10.11420/jsat.64.428

    CiNii Article

  26. Effect of nitrogen contained in ta-CNx on friction characteristics in high vacuum environment

    MATSUDA Yoji, MURASHIMA Motoyuki, UMEHARA Noritsugu, TOKOROYAMA Takayuki, Lee Wooyoung

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>A carbonaceous hard thin film (Diamond-like Carbon) with high hardness and high wear resistance is attracting attention as a low-friction material used in the space environment. It is currently proposed that ta-C films do not exhibit a low coefficient of friction in vacuum due to the effects of dangling bonds (DB). Therefore, we focused on hard carbon nitride film (ta-CNx film) with low dangling bonds. In this study, we clarify the friction characteristics of ta-CNx film under high vacuum. We succeeded in forming ta-CNx films with different nitrogen content and DB number density by the IBA-FAD method. The film was subjected to a rub test with silicon nitride balls in air and high vacuum. At high vacuum, the ta-CNx film with the lowest DB exhibited low friction, with a coefficient of friction of about 0.15, while the ta-CNx film with the higher DB caused delamination of the film. Therefore, it was suggested that the suppression of the DB number density significantly improves the peelability under high vacuum.</p>

    DOI: 10.1299/jsmemecj.2020.S11318

    CiNii Article

  27. Effect of mating material on friction property of ta-C film in pressurized high-temperature water

    SUZUKI Tatsuya, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki, YOSHIDA Kazuhito, HOSOKAWA Masashi, HONDA Takashi, INUKAI Kyoji

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>DLC (Diamond-like Carbon) film is amorphous hard carbon film. DLC film has excellent characteristics such as low friction coefficient, high hardness, high abrasion resistance, and chemical stability, and its application to mechanical sliding surface attracts attention. It has already been applied to many machines under the environment such as atmospheric pressure. However, since the friction and wear characteristics in high temperature, high pressure, and high oxidation environment are not clarified.</p><p>Specimens used were Φ2 pins coated with DLC, and the mating materials were SUS316 and Cr plating plates. The sliding distance is 24.4 m. The specific wear amount and friction coefficient of the ta-C film in each plate were evaluated. The purpose of this research is to clarify the effects of various mating material on ta-C films in pressurized high temperature water and their mechanisms. Consequently, a friction coefficient of the ta-C against the Cr plating plate was 0.35 which was 45% decreased value compared to the SUS316 plate. In the view point of the wear, there was no peeling-off of the ta-C coating in the case of the Cr plating plate, whereas peeling-off of the ta-C coating was observed in the case of the SUS316 plate. As conclusion, selecting mating material is important to achieve stable tribological property for ta-C coatings in high-pressurized water environment.</p>

    DOI: 10.1299/jsmemecj.2020.S11313

    CiNii Article

  28. The Surface Enhanced Raman Scattering Analysis for Carbonaceous Coating by Using Au Nano-Particles

    TOKOROYAMA Takayuki, MURASHIMA Motoyuki, UMEHARA Noritsugu

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 65 ( 8 ) page: 517 - 525   2020

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    <p>In general, Raman analysis is one of the useful candidates to obtain structure of carbonaceous coatings. To improve the depth resolution of Raman analysis, surface-enhanced Raman scattering (SERS) using gold nanoparticles (Au nanoparticles: AuNPs) and Au sputtered particles were investigated. The analysis was conducted to approximately 1.7, 2.4, 4.7, and 10.0 nm thickness of carbon coatings on silicon substrate with a 532 nm incident wavelength laser. The results indicated that the underlying silicon substrate was detected in the results of the Au sputtering method. Contrastingly, the underlying silicon substrate was not detected by the AuNPs method. This result clarified that using the AuNPs method, the detection depth of the carbon film was approximately 1.7 nm or less. The a-C:H coating was processed using a calotester, and SERS measurements at different depths were performed for the 633 and 532 nm wavelengths using the AuNPs method. As a result, the <i>I</i><sub>G </sub>peak position tended to increase from the vicinity of the inter face between the a-C:H coating and the substrate to the surface. In addition, the <i>I</i><sub>D</sub>/<i>I</i><sub>G </sub>ratio was as low as 0.28 near the substrate and 0.72 at 3800 nm.</p>

    DOI: 10.18914/tribologist.20-00001

    CiNii Article

  29. Influence of irradiation angle on coating quality and wear resistance of ta-CN<sub>x</sub> coating by nitrogen ion beam-assisted FCVA method

    HIRATA Kodai, UMEHARA Noritugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki, LEE Wooyang

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>In order to clarify the effect of the ion beam irradiation angle on the coating quality and wear resistance of the ta-CN<sub>x</sub> coating, the ta-CN<sub>x</sub> coating was formed by changing the beam irradiation angle to 0, 15, 30, 60 and 90 degrees. Then, the coating thickness, coating hardness and specific wear rate were measured using a stylus type roughness system, an ultra-fine indentation hardness tester and an atmospheric friction tester. As a result, it became clear that the coating thickness is proportional to the cosine of the irradiation angle. It was also found that the coating hardness is proportional to the square of the collision direction component of the carbon ion velocity during coating formation. Furthermore, it was clarified that the specific wear rate increased as the beam irradiation angle increased, and the reason is that the coating hardness decreased due to the sp<sup>3</sup> content in the coating as the irradiation angle increased.</p>

    DOI: 10.1299/jsmemecj.2020.S11513

    CiNii Article

  30. Clarification of the effect of molding conditions on optical characteristics of thermoplastic CFRP

    Murashima Motoyuki, Kawasaki Takayuki, Umehara Noritsugu, Umehara Noritsugu, Kousaka Hiroyuki

    The Proceedings of Conference of Tokai Branch   Vol. 2020 ( 0 )   2020

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    DOI: 10.1299/jsmetokai.2020.69.422

    CiNii Article

  31. Effects of dangling bonds and surface energy on tribological properties of ta-CNx coating in unlubricated condition and under base oil lubrication

    MIYACHI Takaaki, NAKASHIMA Yuya, ISHIKAWA Kenji, LEE Wooyoung, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>In this paper, we coated ta-CNx films with different nitrogen contents and investigated the amount of dangling bonds and their surface energy. In addition, we tried to clarify the friction behavior of the ta-CNx coating in unlubricated condition and under base oil lubrication reported by Liu from the viewpoint of the amount of dangling bonds and the surface energy of the film. The results showed that the density of dangling bonds decreased as the nitrogen content of the film increased. Further, the surface energy was almost constant despite the increase of nitrogen content of the coating. From these results and Liu's report, it means that surface energy has no effect on frictional behavior. It is also suggested that a decrease in the dangling bond number density of the coating due to an increase in the nitrogen content has the effect of reducing the decrease in the frictional performance of the ta-C coating with an increase in temperature. However, the effect of nitrogen content on friction and wear properties cannot be discussed only by changing the density of dangling bonds.</p>

    DOI: 10.1299/jsmemecj.2020.S11314

    CiNii Article

  32. Development of a low-friction lubrication method using dielectric migrated high viscos-oil-droplet in low viscos-lubricant

    AONO Kazuma, MURASHIMA Motoyuki, UMEHARA Noritsugu, TOKOROYAMA Takayuki

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>Generally, automobile engine system and other machines have oil lubricant in contacting and sliding parts. The oil has to play some important roles for the machine system (e.g. reducing friction loss and wear). Thus, the oil contains many types of additives. Some additives, however, contain high environmental load substances (e.g. heavy metals and non-biodegradable substances) which are/will be strongly required to reduce their usage by regulations. For molybdenum dithiocarbamate (MoDTC), which is a very effective friction modifier in automobile engines, is also considered as a high environmental load additive, and then a new low-friction lubrication method is needed. This paper demonstrates a fundamental study of a new lubrication method which applies dielectric migration phenomenon for oil droplets in another oil phase. For the demonstration, we conducted the friction test using a pin-on-disk in-situ observation friction tester. The friction tester had a SUJ2 ball and a glass plate, which rotated to generate friction force, as friction parts. We used lower viscos-oil, poly-a-olefin (PAO4), and higher viscos-oil, propylene glycol (PG), which was to be small droplets. As a result of the friction test, we clarified that the coefficient of friction was reduced by the high viscosity oil droplets. In addition, it became clear that the amount of high viscos-oil droplet affects reduction of friction coefficient.</p>

    DOI: 10.1299/jsmemecj.2020.S11320

    CiNii Article

  33. The In-Situ Observation of Imitation Wear Particles at Rolling Friction Contact Point by Fluorescent Staining Method

    WATANABE Tomoyasu, TOKOROYAMA Takayuki, UMEHARA Noritsugu, MURASHIMA Motoyuki

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>In general, abrasive particles entering into a contact point causes lifetime reduction of bearings. Such a possibility of particles-entering is assumed to be regard of a relation between an oil film thickness and a particle diameter. Normally, it is difficult to observe a sub-micrometer sized particle by optical microscope because of the optical limit. In this study, to overcome the optical limit, we prepared iFLAT (intelligent Fluorescent Light Assisted Tribometer) to observe the behavior of wear particles in the sliding part of rolling friction. In the in-situ friction test with iFLAT, the normal load was respectively set approximately 1, 5 and 10 N, lubricant was mineral oil and traction oil, and the counter material had the shape of roller. The roller rotated on the glass disk in the same direction of the glass disk rotation. The result revealed that every particle did not enter into the Hertzian contact area. We have concluded that the cause of particle detouring can be an effect of squeeze pressure which was generated by contacting two surfaces. Moreover, we have concluded that the cause of decreasing the distance between the Hertzian contact area and stagnation point can be an effect of increasing of the contact area half width due to increasing of the normal load, and in traction oil, the cause of increasing the distance when the normal load was 10 N can be an effect of increasing of squeeze pressure due to traction oil which has high viscous resistance.</p>

    DOI: 10.1299/jsmemecj.2020.J13118

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  34. In-situ observation of rolling friction sliding part using multiple kinds of simulated wear particles stained with fluorescent stain

    FUSETANI Naoya, TOKOROYAMA Takayuki, UMEHARA Noritsugu, MURASHIMA Motoyuki

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>In general, sliding parts of machines should avoid wear particles entering into a contact area to enlongen lifetime of those parts. To observe wear particles which entering into a contact point by using optical microscope and high speed camera is thought to be one of the potential candidate. However, it is challenging to see those particles of sub-micrometer diameter because of diffraction limited. The authors have been trying to develop iFLAT (intelligent Fluorescent Light Assisted Tribometer). It can observe fluorescent stained particles which emits fluorescent light by 532 nm laser. The laser irradiates the friction surface through the objective lens, and the reflected light passes through the filter and enters the camera. The reflected laser light is blocked by a filter, and the simulated wear particles that emit fluorescence are selectively observed.</p><p>In previous reserch, a quartz glass disk and a SUS304 roller were used for the friction test, and mineral oil was used as the lubricating oil. The experiment in oil bath was performed under boundary lubrication, the sliding speed was 40 mm/s, and the maximum Hertzian contact pressure was approximately 1.1 GPa. It was observed that particles did not enter the contact area when the particle diameter was larger than the oil film thickness. It was thought to be the effect of the squeeze film effect caused by the approach of the two surfaces.</p>

    DOI: 10.1299/jsmemecj.2020.J13119

    CiNii Article

  35. The Micro-meter-sized Asperities manufactured by AC Electric Field for Vinyl Chloride Solvent

    TOKOROYAMA Takayuki, YAMADA Yusei, UMEHARA Noritsugu, MURASHIMA Motoyuki

    The Proceedings of the Conference on Information, Intelligence and Precision Equipment : IIP   Vol. 2020 ( 0 )   2020

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    In this study, in order to create inexpensive micrometer-sized texturing, a polyvinyl chloride solvent dissolved inacetone was prepared. The solvent droplet was dropped on a silicon substrate, and placed between parallel plateelectrodes. The effects of concentration, DC/AC and their combination voltage on micrometer-sized plastic texturing were clarified. As a result, it was clarified that the micrometer-sized plastic texture could be dispersed most on the surface by applying AC 11 Hz in the early stage of the solvent evaporation, and that the protrusion height increased with the concentration and DC voltage.

    DOI: 10.1299/jsmeiip.2020.2C07

    CiNii Article

  36. In-situ oil film thickness observation for two phase lubricant by using reflection spectroscopy under sliding condition

    MAEDA Yuta, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki, SATO Taku, NAGATA Ryoko, HANYUDA Kiyoshi

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>Two phase lubricant have been studied as a new design method for improving the viscosity index of lubricant by mixing high and low-viscosity lubricants. In general, two phase lubricant is separated into high and low-viscosity lubricants at low temperature. When the two phase lubricant puts statically, low-viscosity lubricant becomes upper layer. Then it exhibits low viscosity at low temperature by using the low-viscosity lubricant part. On the other hand, two phase lubricant also shows the same viscosity when it puts at high temperature because high viscosity lubricant acts as main lubricant to prevent too much viscosity reduction. In this paper, an in-situ analysis of the oil film thickness formed between a friction pair for two phase lubricant was carried out. The reflection spectroscopic film thickness meter is capable of film thickness analysis in a minute region. As a result, it was suggested that the oil film thickness formed at the sliding part had a multi-layer structure due to existence of adsorption layers. In addition, it was revealed that sufficient oil film thickness was formed at high temperature, therefore it showed superior friction characteristics compared to only low viscosity oil.</p>

    DOI: 10.1299/jsmemecj.2020.S11326

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  37. Clarification of the influence of additives in oil on low friction mechanism by in-situ reflectance observation of friction part

    HASHIZUME Naoya, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    <p>To clarify the effect of tribofilm derived from MoDTC additives on low friction, we conducted the friction test and in-situ observation of tribofilm on contact point by reflectance spectroscopy. From the reflectance spectrum measured by reflectance spectroscopy, we observed and estimated the thickness and the composition of tribofilm. We proposed that when the thickness of tribofilm is under root mean square roughness <i>R<sub>q</sub></i>, the thickness of tribofilm is dominant to friction coefficient. By forming the tribofilm, the state of contact point transfer to the contact through the tribofilm from the direct contact, and the solid lubrication derived from tribofilm is occurred. However, when the tribofilm thickness is over <i>R<sub>q</sub></i>, the contact point has already covered by tribofilm. Therefore, the increase of tribofilm does not have influence on the state of contact point. At this stage, MoS<sub>2</sub> concentration in tribofilm is dominant to friction coefficient instead of the increase of the tribofilm. MoS<sub>2</sub> concentration relates the solid lubrication performance of the tribofilm because MoS<sub>2</sub> is the only substance which has the characteristic of solid lubrication in tribofilm.</p>

    DOI: 10.1299/jsmemecj.2020.S11504

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  38. In –situ analysis of two phase lubricant oil film with a reflectance spectroscopy

    YAMADA Takazumi, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki, SATO Taku, OHARA Kenji, HANYUDA Kiyoshi

    Transactions of the JSME (in Japanese)   Vol. 86 ( 884 ) page: 19 - 00315-19-00315   2020

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    <p>Two phase lubricant has attracted attention as a lubricating oil with little change in viscosity with temperature change. The two phase lubricant consist of the low and high viscosity base oils which are miscible at high temperature but not at lower temperature. For exmaple, Mineral or synthetic base oil are used as a low viscosity lubricant and PAG(polyalkylene glycol). In the high temperature region, PAG dissolves into mineral or synthetic base oil and the viscosity reduction is relieved. However, the structure and frictional characteristics of the oil film at the sliding part have not been elucidated. In this paper, in-situ analysis of the oil film formed on the friction surface was carried out with a reflection spectroscopic film thickness meter. And, this paper clarified the influence of the oil film structure and oil film thickness of the two phase lubricant and its friction characteristics. As a result, it was suggested that the oil film of the two phase lubricant in the sliding part was a multilayer due to the adsorption layer of PAG. In addition the two phase lubricant showed a friction coefficient lower by about 0.03 to 0.07 at the experimental temperature compared to PAO, and it was clarified that a thick oil film was formed.</p>

    DOI: 10.1299/transjsme.19-00315

    CiNii Article

  39. The micro-meter-sized plastic asperities by AC electric field for Poly-vinyl chloride solvent

    YAMADA Yusei, TOKOROYAMA Takayuki, MURASHIMA Motoyuki, UMEHARA Noritsugu

    Transactions of the JSME (in Japanese)   Vol. 86 ( 892 ) page: 20 - 00228-20-00228   2020

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    <p>In order to create an inexpensive micrometer-sized plastic asperities, a polyvinyl chloride solvent dissolved in acetone was prepared so that the solvent droplet was put on silicon substrate and placed between parallel plate electrodes (the gap was 5 mm). The effects of concentration, DC/AC and their combination voltage on the creation of micrometer-sized plastic asperities were clarified. As a result, asperities with a height of more than 10 μm were observed from a solvent concentration more than 2.51 mg/ml. It was found that the asperities height increased linearly from around 10 μm to 14 μm with the applied voltage of 0.1 kV to 2.0 kV between the parallel plate electrodes. The effect of DC or AC of 2.0 kV on asperities height and number per unit area were conducted, then the height of asperities decreased from 14 μm to 10 μm when frequency was applied to 11 Hz. To confirm the effect of applying AC voltage on motion of the solvent droplet, high-speed camera observation was carried out. It was revealed that the droplet oscillated by applied AC voltage between parallel plates. The dimensionless height of the droplet increased and reached a maximum at AC 11 Hz. Finally, to clarify the effect of the initial voltage application method on the formation of asperities, a voltage was applied between the parallel plate electrodes under the conditions of DC/AC and no voltage for an initial evaporation time of 3 min. By applying AC 11 Hz during solvent evaporation period, it was clarified that the asperities dispersed most on the surface, then variations in asperities height were reduced.</p>

    DOI: 10.1299/transjsme.20-00228

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  40. Effect of Carbonaceous Hard Coatings Overcoat on Friction and Wear Properties for Al Alloy Sliding Bearing in Oil Lubrication

    Umehara N., Kitamura T., Ito S., Tokoroyama T., Murashima M., Izumida M., Kawakami N.

    Mechanisms and Machine Science   Vol. 73   page: 3795 - 3803   2019

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    Diamond-like Carbon (DLC) film and Carbon Nitride (CNx) film are expected to be applied to automotive engine bearings because they show low friction and high wear resistance. Whereas many fundamental tribological re-searches of DLC and CNx have been conducted, practical researches of these coatings on engine bearings are still not enough. Therefore, clarifying friction and wear properties of the coatings on real engine bearings are strongly required. Especially, since lubrication conditions of engine bearings vary in automotive drive, clarifying the effect of lubrication conditions on tribological properties is important. For the reasons, we focus on the clarification of the effect of lubrication condition on friction and wear properties of the bearings coated with several DLC coatings. In this research, tribological properties of three different types of bearings, aluminium-alloy bearings without any coatings, a-C:H coated bearings and CNx coated bearings, are compared. The CNx coating was deposited by Ion Beam Assisted Deposition (IBAD) method on a-C:H coated bearings. As results, it is clarified that CNx coated bearings show the lowest friction coefficient, μ = 0.10, between three bearings under low sliding speed conditions. Under high sliding speed conditions, CNx after running-in also shows the lowest friction co-efficient. In the view point of wear, CNx coating reduces specific wear rate to 4.5 × 10−9 mm3/Nm from the value of a-C:H coating, 7.9 × 10−8 mm3/Nm. From these results, it is clarified that CNx coating on a-C:H coated bearing achieves low friction and high wear resistance coating on engine bearings.

    DOI: 10.1007/978-3-030-20131-9_376

    Scopus

  41. Effect of defects on tribological behavior in ta-C coating deposited by Filtered Cathodic Vacuum Arc technique

    Lee W.Y., Jang Y.J., Tokoroyama T., Murashima M., Umehara N.

    Mechanisms and Machine Science   Vol. 73   page: 3939 - 3944   2019

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    This study examined the tribological behavior of a ta-C coating fabricated at a substrate bias of -100 V via filtered cathodic vacuum arc (FCVA) deposition. Defects in the ta-C coating were categorized as droplets, pores, and spikes, considering the morphological, structural, and mechanical properties of the ta-C surface. A friction test was conducted at 170 °C in ambient air using a ball-on-disk tribometer. The friction coefficient was 0.08 during the steady state and the wear rate was 4.3×10−6 mm3/Nm. To explain the friction and wear behavior, the morphological and structural properties of the defects in the designated area were compared among different sliding cycles. The droplet is almost detached and some pores can be generated from spot where droplet was presented. Spalling of these spikes produced abrasive particles that caused severe wear at pores possessing a sp2-rich structure and poor mechanical properties.

    DOI: 10.1007/978-3-030-20131-9_391

    Scopus

  42. Investigating running-in behavior to understand wear behavior of ta-C coating with filtered cathodic vacuum arc deposition

    Lee W.Y., Tokoroyama T., Murashima M., Umehara N.

    Jurnal Tribologi   Vol. 23   page: 38 - 47   2019

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    In this study, to clarify running-in cycle and role of carbon transfer layer on wear, ta-C coatings were subjected to friction tests under 200 °C in air with a different sliding cycles. The steady state friction coefficient of 0.02 was obtained after finishing a running-in cycles approximately 2,000 cycles. During the steady state, wear rate of ta-C decreased with increasing number of cycles. Such the decrease of wear rate was explained by polished defects presented on surface and form carbon transfer layer on the counter-part material. The mechanism of those tribological properties was analyzed by Raman spectroscopy, scanning electron microscope observation and 3D measuring laser microscope.

    Scopus

  43. Development of technique for suppressing adhesion of carbide to coated electrosurgical knife electrode

    KOBAYASHI Masahiro, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2019 ( 0 )   2019

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    DOI: 10.1299/jsmemecj.2019.J16414P

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  44. Prologue to the Special Issue on "Recent Trends in Tribology Field Led by Technical Committees in JAST"

    MURASHIMA Motoyuki

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 64 ( 1 ) page: 2 - 2   2019

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    DOI: 10.18914/tribologist.64.01_2

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  45. Prologue to the special issue on recent trends in tribology field led by Technical Committees in JAST

    Murashima M.

    Toraibarojisuto/Journal of Japanese Society of Tribologists   Vol. 64 ( 1 )   2019

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  46. Clarification of adhesive mechanism of pressed alumina powder on mold surfaces using LFM/AFM

    HOJO Koki, ITO Shigehiro, UMEHARA Noritsugu, MURASHIMA Motoyuki, TOKOROYAMA Takayuki, SUGIURA Kei, TAKAHASHI Tomonori

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2019 ( 0 )   2019

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    DOI: 10.1299/jsmemecj.2019.J16418P

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  47. The clarification of low friction mechanism in base oil lubrication of ta-CNx coating by in-situ observation with reflectance spectroscopy

    OKAMOTO Tatsuya, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki

    Transactions of the JSME (in Japanese)   Vol. 85 ( 875 ) page: 19 - 00071-19-00071   2019

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    <p>Among DLC (Diamond-Like Carbon), ta-C (tetrahedral amorphous Carbon) coatings have been applied to improve fuel efficiency in automobile engines. Furthermore, it has been reported that a ta-CNx (tetrahedral amorphous Carbon Nitride) coating showed more than 50% lower friction coefficient in base oil lubrication compared to ta-C coating. On the other hand, the low friction mechanism of the ta-CNx coating has not been clarified. From the previous research, low friction mechanism of the ta-CNx coating in oil lubrication is considered that the increment of oil film thickness in accordance with increasing the oiliness of the transformed layer is important. However, the effects of oil film thickness and oiliness of the transformed layer on friction coefficient have not been quantitatively clarified, because oil film thickness and oiliness of the transformed layer have not been measured during friction. Therefore, in this research, the objective was set to clarify the low friction mechanism of the ta-CNx coating in oil lubrication by in-situ observation with reflectance spectroscopy, and oil film thickness and physical properties (polarizability, chemical bonding fraction) of the transformed layer was measured by in-situ observation with reflectance spectroscopy. Using in-situ observation with reflectance spectroscopy, film thickness, refractive index <i>n</i> and extinction coefficient <i>k</i> can be measured during friction test. And polarizability and chemical bonding fraction of the transformed layer were estimated from refractive index and extinction coefficient. From in-situ observation with reflectance spectroscopy, low friction mechanism of the ta-CNx coating in oil lubrication was proposed as shown below. The transformed layer was formed during friction and the polarizability of the transformed layer increased in accordance with decreasing C-Csp<sup>2</sup> bonding fraction of the transformed layer, and PAO4 oil molecules were physically adsorbed on the transformed layer. As a result, oil film thickness increased and low friction occurred.</p>

    DOI: 10.1299/transjsme.19-00071

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  48. Proposal of roughing and finishing simultaneous polishing method using two kinds of abrasive grains with different hardness

    TAKENO Hiroaki, TOKOROYAMA Takayuki, UMEHARA Noritsugu, MURASHIMA Motoyuki, CHIBA Shogo

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2019 ( 0 )   2019

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    <p>Polishing manufacturers use abrasives such as diamond or other hard materials to flatten several materials. Hard abrasives account for a half of processing cost. One of the concept to overcome the cost problem, reduce high cost hard abrasives and applying cheap and soft abrasives together. In this study, we investigated the effect of two-hardness-abrasive polishing to a glass disk. An average diameter of 127 μm GC, 13 μm GC, 27 μm B<sub>4</sub>C, 30 μm WA and 1 μm diamond abrasive were used as concept abrasives. As a result, the arithmetic mean roughness of the glass quickly decreased in the case of using 127 μm GC abrasive with 1 μm diamond abrasive compared to 13 μm GC, 27 μm B<sub>4</sub>C, 30 μm WA. The arithmetic mean surface roughness of the glass disk became approximately Ra = 0.5 μm in 10 min. that value was smaller than the other soft abrasives.</p>

    DOI: 10.1299/jsmemecj.2019.S13207P

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  49. New Tribo-Material Inspired from Morphing Functionality of Living Thing:―Active Control of Hydrodynamic Lubrication Condition by Morphing Surface Created by 3D Printer―

    MURASHIMA Motoyuki

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 64 ( 12 ) page: 738 - 739   2019

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    DOI: 10.18914/tribologist.64.12_738

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  50. Deposition of ta-C: B coating by FCVA using boron doped target and its tribological behaviors at elevated temperature up to 300°C

    Nemoto K., Umehara N., Tokoroyama T., Murashima M., Takimoto Y., Nakamichi K.

    Toraibarojisuto/Journal of Japanese Society of Tribologists   Vol. 63 ( 10 ) page: 699 - 705   2018

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    Boron doped tetrahedral amorphous carbon (ta-C: B) coatings were deposited with Filtered Cathodic Vacuum Arc (FCVA) method using boron doped graphite target (B=0, 5 and 10 at %). The material properties and tribological properties of ta-C: B coatings were obtained at 23∼300°C. The amount of boron contents in ta-C: B coatings are from 0 to 5.1 at. %, and the hardness of coatings ware more than 30 GPa. The friction coefficient of ta-C: B 3.1 at 300°C is about 0.02 in air. The specific wear rate of ta-C: B coating were lower than normal ta-C coating by 34% and 46% for ta-C: B 3.1 and ta-C: B 5.1 , respectively. The sp 2 /(sp 2 + sp 3 ) ratio measured by XPS and O/C ratio measured by AES increased through the friction at 300°C for ta-C, on the other hand both values did not change for ta-C: B. Friction coefficients of ta-C: B 3.1 were shown as 0.055 at 23°C and about 0.02 at 100∼300°C. The specific wear rate of ta-C: B 3.1 at 23∼300°C in air was about 2.0 × 10 -6 mm 3 /Nm. From these results, we confirmed that ta-C: B shows lower friction and higher specific wear resistance at 23∼300°C in air than ta-C.

    Scopus

  51. Deposition of ta-C:B Coating by FCVA Using Boron Doped Target and Its Tribological Behaviors at Elevated Temperature up to 300℃

    NEMOTO Kouki, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki, TAKIMOTO Yuji, NAKAMICHI Kenji

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 63 ( 10 ) page: 699 - 705   2018

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    <p>Boron doped tetrahedral amorphous carbon (ta-C:B) coatings were deposited with Filtered Cathodic Vacuum Arc (FCVA) method using boron doped graphite target (B=0, 5 and 10 at. %). The material properties and tribological properties of ta-C:B coatings were obtained at 23~300℃. The amount of boron contents in ta-C:B coatings are from 0 to 5.1 at. %, and the hardness of coatings ware more than 30 GPa. The friction coefficient of ta-C:B3.1 at 300℃ is about 0.02 in air. The specific wear rate of ta-C:B coating were lower than normal ta-C coating by 34% and 46% for ta-C:B<sub>3.1</sub> and ta-C:B<sub>5.1</sub>, respectively. The sp<sup>2</sup>/(sp<sup>2</sup>+ sp<sup>3</sup>) ratio measured by XPS and O/C ratio measured by AES increased through the friction at 300℃ for ta-C, on the other hand both values did not change for ta-C:B. Friction coefficients of ta-C:B<sub>3.1</sub> were shown as 0.055 at 23℃ and about 0.02 at 100~300℃. The specific wear rate of ta-C:B<sub>3.1</sub> at 23~300℃ in air was about 2.0 × 10<sup>−6 </sup>mm<sup>3</sup>/Nm. From these results, we confirmed that ta-C:B shows lower friction and higher specific wear resistance at 23~300℃ in air than ta-C.</p>

    DOI: 10.18914/tribologist.18-00003

    CiNii Article

  52. Prologue to the special issue on informotion in IoT age

    Murashima M.

    Toraibarojisuto/Journal of Japanese Society of Tribologists   Vol. 63 ( 9 )   2018

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  53. カーボンファイバーブラシを用いたDLC膜研磨手法の開発に向けた基礎検討

    今泉 友佑, 村島 基之, 野老山 貴行, 梅原 徳次

    年次大会   Vol. 2018 ( 0 )   2018

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    <p>Diamond-like Carbon (DLC) is expected to be applied to semiconductor manufacturing equipment because of its chemical stability and hardness. However, DLC films generally contain droplet in its surfaces. The existence of droplet causes loss of smoothness and uniformity of film properties. Moreover, it is necessary to remove the droplets along with recent miniaturization of semiconductor. In this study, we have developed new cleaning method on the surface of tetrahedral amorphous-Carbon (ta-C), which is one kind of DLC families, with Carbon Fiber Brush (CFB) which is made of carbon fiber. We utilized the unique characteristics of carbon fiber, high strength and few micrometer diameter, for removing droplets on ta-C coatings. We conducted polishing tests changing carbon fiber length and sliding distance. CFB of 6.0 mm length with 600 m can be compatible with removing droplets and low aggressiveness against the films.</p>

    DOI: 10.1299/jsmemecj.2018.S1110102

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  54. Prologue to the Special Issue on "Informotion in IoT Age"

    MURASHIMA Motoyuki

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 63 ( 9 ) page: 579 - 579   2018

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    DOI: 10.18914/tribologist.63.09_579

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  55. The clarification of friction mechanism in oil lubrication for CN <inf>x</inf> coating by in-situ observation of friction area with reflectance spectroscopy

    Okamoto T., Umehara N., Murashima M., Saito K., Manabe K., Hayashi K.

    Toraibarojisuto/Journal of Japanese Society of Tribologists   Vol. 63 ( 11 ) page: 755 - 767   2018

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    To clarify the low friction mechanism of CN x coating in PAO oil lubrication, we measured reflectance spectrum at friction area in-situ by reflectance spectroscopy during friction test against a sapphire hemi-sphere pin in PAO oil. We observed and estimated thickness of PAO oil film, surface roughness of CN x coating, thicknesses and polarizability of transformed layer formed on bulk CN x coating during friction test by analyzing reflectance spectrum. We proposed that the decreasing of load ratio of boundary lubrication mode to total load is the one of governing factor to reduce friction on the basis of the increasing of A value. Also we proposed the increasing of adsorption of PAO oil to the CN x transformed layer is the second governing factor on the basis of the increasing of polarizability of PAO oil and transformed layer, that leads to the increasing of van der Waals force between transformed layer and PAO oil as low friction mechanism of CN x in PAO oil lubrication.

    Scopus

  56. The Clarification of Friction Mechanism in Oil Lubrication for CN<i>x </i>Coating by <i>In-Situ </i>Observation of Friction Area with Reflectance Spectroscopy

    OKAMOTO Tatsuya, UMEHARA Noritsugu, MURASHIMA Motoyuki, SAITO Koji, MANABE Kazuyoshi, HAYASHI Keiji

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 63 ( 11 ) page: 755 - 767   2018

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    <p>To clarify the low friction mechanism of CN<i>x </i>coating in PAO oil lubrication, we measured reflectance spectrum at friction area <i>in-situ </i>by reflectance spectroscopy during friction test against a sapphire hemi-sphere pin in PAO oil. We observed and estimated thickness of PAO oil film, surface roughness of CN<i>x </i>coating, thicknesses and polarizability of transformed layer formed on bulk CN<i>x </i>coating during friction test by analyzing reflectance spectrum. We proposed that the decreasing of load ratio of boundary lubrication mode to total load is the one of governing factor to reduce friction on the basis of the increasing of Λ value. Also we proposed the increasing of adsorption of PAO oil to the CN<i>x </i>transformed layer is the second governing factor on the basis of the increasing of polarizability of PAO oil and transformed layer, that leads to the increasing of van der Waals force between transformed layer and PAO oil as low friction mechanism of CN<i>x </i>in PAO oil lubrication.</p>

    DOI: 10.18914/tribologist.17-00023

    CiNii Article

  57. Indentation deformation analysis of ta-C coated steel under repeated normal load

    TORRE Oscar DE LA, UMEHARA Noritsugu, TOKOROYAMA Takayuki, MURASHIMA Motoyuki

    The Proceedings of Conference of Tokai Branch   Vol. 2018 ( 0 )   2018

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    DOI: 10.1299/jsmetokai.2018.67.720

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  58. 二液分離油の反射分光摩擦面その場観察装置を用いたしゅう動部油膜その場分析

    山田 高澄, 梅原 徳次, 野老山 貴行, 村島 基之, 佐藤 卓, 大原 健司, 羽生田 清志

    年次大会   Vol. 2018 ( 0 )   2018

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    <p>Two phase lubricant has attracted attention as a lubricant oil with little change in viscosity with temperature change. The two phase lubricants consist of the low and high viscosity base oils which are miscible at high temperature but not at lower temperature.For exmaple, Mineral or synthetic base oil are used as a low viscosity lubricant and PAG is used as a high viscosity lubricant for two phase lubricant. In the high temperature region, PAG is mixed into mineral or synthetic base oil and the viscosity reduction is relieved. However, with this two phase lubricant, the structure and frictional characteristics of the oil film at the sliding part have not been elucidated. In this paper, in-situ analysis of the oil film formed on the friction surface was carried out using a reflection spectroscopic film thickness meter. In addition, focusing on the difference in molecular structure between PAG and PAO, oil film analysis was carried out using an oil film model having a three-layer structure in which a PAG adsorption layer having a functional group and a polar molecule exists. As a result of using two phase lubricant, it was shown that the frictional characteristics with temperature change are different.</p>

    DOI: 10.1299/jsmemecj.2018.S1110201

    CiNii Article

  59. Proposal of lightweight and low starting torque slide bearing with looped carbon fibers brush Reviewed

    SHITAKA Takuya, MURASHIMA Motoyuki, UMEHARA Noritsugu, TSUKIYAMA Yosuke, NITTA Isami, KOUSAKA Hiroyuki, DENG Xingrui

    Transactions of the JSME (in Japanese)   Vol. 83 ( 854 ) page: 17 - 00252-17-00252   2017

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    <p>This paper addresses a novel lightweight and low starting torque bearing with looped carbon fiber brush (LCFB). LCFB simulates bristle of living being. Moreover, the static friction coefficient is nearly equal to the kinetic friction coefficient. By applying LCFB to a slide bearings, where a shaft is supported by multiple LCFBs, it is realized low starting torque bearings as well as lightness compared to conventional ball bearings. In this paper, we manufacture prototype LCFB slide bearings. With the bearings, we compare friction torque between LCFB slide bearings, slide bearings and deep groove ball bearings. As results, the ratio of starting torque to regular torque of LCFB slide bearing is from 0.93 to 1.07 which is smaller than that of the slide bearing. When micro-spline shaft is used as a mating material of LCFB slide bearing, the torque reduces because of decrease of real contact area between LCFB and mating materials. In addition, since LCFB utilize elastic deformation of fibers, LCFB slide bearings are not endurable in heavy radial load as high as load rating of ball bearing. Therefore, we define the load capacity of LCFB slide bearing from buckling load of a carbon fiber bundle to avoid overload state. We propose the load capacity as a design guideline of LCFB slide bearings.</p>

    DOI: 10.1299/transjsme.17-00252

    CiNii Article

  60. Effect of drill surface texturing on back burr height with solid lubricating sheet in titanium alloy drilling Reviewed

    OYAMA Shintaro, UMEHARA Noritsugu, KOUSAKA Hiroyuki, DENG Xingrui, MURASHIMA Motoyuki, HORIE Shigeru, MATSUYAMA Yousuke

    Transactions of the JSME (in Japanese)   Vol. 83 ( 849 ) page: 16 - 00378-16-00378   2017

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    <p>This paper describes about the effect of drill surface texturing on height of back burr in titanium alloy drilling process with solid lubricating sheet. Titanium alloy is difficult to conduct drilling because titanium alloy is hard and ductile material. And the workers cannot use plenty of liquid coolant for preventing the productivity decline when the work places are above their heads in production fields. Therefore drills are exchanged frequently even though the cost increases. In this study, we measured the cutting force by a loadcell to know the effect of drill surface texturing and solid lubricating sheet on drilling process of work pieces made of Ti-6Al-4V. As the results, drill with rough textured rake surface showed high burr height in exit of Ti-6Al-4V. On the other hand, drill with rough textured flank surface showed low burr height only if drilling with solid lubricating sheet. Moreover, drill with the specific texturing on flank surface by wire electric discharge machining showed low burr height.</p>

    DOI: 10.1299/transjsme.16-00378

    CiNii Article

  61. Essay for Overseas experience in tribology -Around the world-experience note of studying abroad in the university of toronto

    Murashima M.

    Toraibarojisuto/Journal of Japanese Society of Tribologists   Vol. 62 ( 8 ) page: 522 - 525   2017

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  62. Experience Note of Studying Abroad in the University of Toronto

    MURASHIMA Motoyuki

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS   Vol. 62 ( 8 ) page: 522 - 525   2017

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    DOI: 10.18914/tribologist.62.08_522

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  63. Increasing Load Capacity of Low Starting Torque Slide Bearing with Looped Carbon Fiber Brush

    GOTOH Yasuaki, UMEHARA Tokuji, MURASHIMA Motoyuki, KOUSAKA Hiroyuki

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2017 ( 0 )   2017

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    <p>Sliding bearings with looped carbon fiber brush (LCFB) have been reported to exhibit light weight and low starting torque. However, there is a problem that fibers buckle and break easily when a load is applied to a certain extent. Therefore, in this research, in order to increase the buckling load of LCFB, we introduced new designs. One is decreasing the radius of curvature of conventional LCFB. Another is increasing cross section secondary moment of LCFB by stacking three CF strips, whereas one strip for conventional LCFB. Indentation and friction tests were conducted. As a result, the three CF stacked LCFB has higher buckling load while maintaining the light weight and superior friction properties of single LCFB.</p>

    DOI: 10.1299/jsmemecj.2017.S1110103

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  64. 誘電バリア放電を用いたta-CNx膜の低摩擦化技術の開発

    村島基之,佐宗朋洋,梅原徳次,野老山貴行,李義永

    トライボロジー会議春2021東京講演予稿集     2021.5

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  65. Development of a new diamond-like carbon surface treatment method with electric discharge for short running-in and friction reduction

    Motoyuki Murashima, Misato Maeda, Deng Xingrui, Noritsugu Umehara, Hiroyuki Kousaka

    Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology     2021.4

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    The present paper proposes a new treatment method for diamond-like carbon (DLC) coatings using electric discharge. DLC coatings exhibit excellent mechanical and tribological properties due to their unique carbonaceous structure. Several surface treatment methods were presented to achieve short running-in and low friction. However, in-situ surface treatment is needed to extend the life of machines and maintain their performance. Here, we propose an electric discharge treatment with a simple electrical circuit. As a result, the friction coefficient drastically drops from 0.3 to 0.11. Interestingly, the drop starts shortly after the discharge starts. Consequently, the running-in is shortened to about 6-m sliding compared to no discharge condition, which does not show any running-in more than 68-m sliding. Raman analysis reveals that a transfer layer on the ball surface is composed of carbonaceous material and the structure exhibits graphite-like characteristics. However, there is visible damage on the DLC surface. Another friction test shows a very low friction coefficient of 0.04 using a transfer layer-covered ball and a new DLC disk with a smooth surface. In conclusion, the combination of a transfer layer and smooth DLC surface is needed to exhibit excellent tribological performance, indicating the importance of less damage treatment. Next, pulse discharge treatment is demonstrated to achieve less damage to the DLC coating. As a result, the pulse discharge method reduces friction and surface damage. In conclusion, the proposed treatment methods using electric discharge not only show the potential for reducing friction, but also the feasibility of in-situ treatment during machine operation.

    DOI: 10.1177/13506501211013126

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    Scopus

  66. Realization of a Novel Morphing Surface Using Additive Manufacturing and Its Active Control in Friction Invited Reviewed

        page: 1 - 11   2021.3

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  67. Nanotextured Mold Surface with DLC coating for Reduction in Residual Ceramic Particles Invited Reviewed

    Motoyuki Murashima, Koki Hojo, Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Tomonori Takahashi, Minoru Imaeda

    Langmuir     2021.3

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  68. Wear acceleration of a-C:H coatings by molybdenum-derived particles: Mixing and temperature effects Invited Reviewed

    K.A.M Kassim, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Tribology International     page: 1 - 12   2021.2

  69. Realization of A Novel Morphing Surface using Additive Manufacturing and its Active Control in Friction

    Motoyuki Murashima, Yusuke Imaizumi, Masato Kawaguchi, Noritsugu Umehara, Takayuki Tokoroyama, Toshiyuki Saito, Masayuki Takeshima, Yosuke Tsukiyama, Isami Nitta

    Journal of Tribology   Vol. 143 ( 5 ) page: 1 - 29   2021.2

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    <title>Abstract</title>
    As the need for higher efficiency of engineering components increases, so does the demand for functional surfaces. While various tribosurfaces (e.g., texturing and coatings) have been developed, many researches are aimed at static functionality. On the other hand, due to a wide range of environmental adaptability and active control, active-morphing surfaces can be highly efficient and robust. In this paper, we demonstrate a novel morphing surface and its realization using additive manufacturing (AM). By using a diaphragm structure, morphing performance is achieved even if a hard resin material is used. When air pressure is applied to the backside of the diaphragm, it changes to a convex shape, and vice versa. The concept requires a complex structure for arranging airflow and a solid morphing system. The AM is one great technique to create such complex structure. As a result of actual manufacturing, the created morphing structure realizes a large morphing of 600 µm or more. In addition, the shape changes reversibly depending on the air pressure. The surface also exhibits very interesting tribological characteristics. The surface shows a friction coefficient of 0.5-1.7 with a convexity, and then decreases to about 0.3 with a concavity. A real-contact area measurement reveals that the novel property occurs due to change in the real-contact area depending on surface morphology. In conclusion, the present paper provides a new concept of a novel morphing tribosurface, which selectively performs as a low-friction or break-like surface, created using AM.

    DOI: 10.1115/1.4050269

    Scopus

  70. The micro-meter-sized plastic asperities by AC electric field for Poly-vinyl chloride solvent Invited Reviewed

        2020.12

  71. 薄肉変形表面を用いた貧潤滑時摩擦能動的制御手法の開発

    村島基之,今泉友介,梅原徳次,野老山貴行,齊藤利幸,竹島雅之

    トライボロジー会議秋2020別府講演予稿集     2020.11

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  72. Preventing coagulated-blood adhesion on a coated electrosurgical knife Invited Reviewed

        2020.9

  73. Effect of doped tantalum in ta-CNx film or tantalum as counterpart material on the friction and wear properties of ta-CNx Invited Reviewed

        2020.8

  74. The Surface Enhanced Raman Scattering Analysis for Carbonaceous Coating by Using Au Nano-Particles Invited Reviewed

      Vol. 65 ( 8 ) page: 517 - 525   2020.8

  75. Enhancement of speed of surface roughness improvement by using a two mixed abrasive slurry method to polish glass surfaces Invited Reviewed

        page: 428 - 435   2020.8

  76. The Wear Classification of MoDTC-derived Particles on Silicon and Hydrogenated Diamond-like Carbon at Room Temperature Reviewed

    K.A.M Kassim, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Tribology International,   Vol. 147   page: accepted   2020.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.triboint.2020.106176

    Web of Science

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  77. Effect of mesh structure of ta-C coating on friction and wear properties under base-oil lubrication condition

    Mohd Myhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, A. Shibata, H. Moriguchi

    Tribology International   Vol. 147   page: accepted   2020.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.triboint.2019.01.016

    Web of Science

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  78. Effect of defects on wear behavior in ta-C coating prepared by filtered cathodic vacuum arc deposition Reviewed

    Woo-Young Lee, Young-Jun Jang, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Diamond and related materials   Vol. 105   page: 1-7   2020.5

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.diamond.2020.107789

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  79. 二液分離油の反射分光摩擦面その場観察装置を用いたしゅう動部油膜その場分析 Reviewed

    山田高澄,梅原徳次,野老山貴行,村島基之,佐藤卓,大原健司,羽生田清志

    日本機械学会論文集     page: 1-14   2020.4

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  80. Development of Surface Roughness Generation Model for CFRTP Manufactured by LFT-D

    Murashima Motoyuki, Murooka Takaharu, Umehara Noritsugu, Tokoroyama Takayuki

    INTERNATIONAL JOURNAL OF AUTOMATION TECHNOLOGY   Vol. 14 ( 2 ) page: 208-216   2020.3

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  81. Effect of defects on wear behavior in ta-C coating prepared by filtered cathodic vacuum arc deposition Reviewed

    Woo-Young Lee, Young-Jun Jang, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Diamond and related materials     page: 1-7   2020.3

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  82. New Droplet Removal Polishing Method for Diamond-Like Carbon with Carbon Fiber Brush

    Murashima Motoyuki, Imaizumi Yusuke, Umehara Noritsugu, Tokoroyama Takayuki

    INTERNATIONAL JOURNAL OF AUTOMATION TECHNOLOGY   Vol. 14 ( 2 ) page: 190-199   2020.3

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  83. Effect of Mating Material and Graphitization on Wear of a-C:H Coating in Boundary Base Oil Lubrication

    Aboua Kouami, Auxence Melardot, Umehara Noritsugu, Kousaka Hiroyuki, Tokoroyama Takayuki, Murashima Motoyuki, Bin Mustafa Mohd, Muhyiddin Bin, Mabuchi Yutaka, Higuchi Tsuyoshi, Kawaguchi Masahiro

    TRIBOLOGY LETTERS   Vol. 68 ( 1 )   2020.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s11249-019-1248-6

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  84. Intelligent tribological surfaces: from concept to realization using additive manufacturing

    Murashima Motoyuki, Yoshino Shouta, Kawaguchi Masato, Umehara Noritsugu

    INTERNATIONAL JOURNAL OF MECHANICS AND MATERIALS IN DESIGN   Vol. 15 ( 4 ) page: 757 - 766   2019.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s10999-018-9435-4

    Web of Science

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  85. Investigating running-in behavior to understand wear behavior of ta-C coating with filtered cathodic vacuum arc deposition

    Lee Woo-Young, Tokoroyama Takayuki, Murashima Motoyuki, Umehara Noritsugu

    JURNAL TRIBOLOGI   Vol. 23   page: 38-47   2019.12

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  86. Effect of Multiple Damages on AI Learning to Realize Stable Friction with Active Morphing Surface -Smart Surface- Reviewed

    Motoyuki Murashima, Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama,

        page: P1-12   2019.9

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  87. Elucidation of Wear Mechanism of DLC Film under High Oxidizing Environment and Study on Wear Reduction Method Reviewed

    Masashi Hosokawa, Yoji Ito, Makoto Takeuchi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama,

    Proc. International Tribology Conference Sendai 2019     page: 21-C-12   2019.9

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  88. The Tribological Behavior of DLC Coatings Induced by B/Cr Co-Doping and Clarification of Their Mechanism Reviewed

    Ruixi Zhang, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Yuji Takimoto,

    Proc. International Tribology Conference Sendai 2019     page: 21-B-1   2019.9

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  89. Improvement of polishing efficiency and reduction of damage depth in One process using low hard abrasives and hard abrasives Reviewed

    Hiroaki Takeno, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Shogo Chiba,

    Proc. International Tribology Conference Sendai 2019     page: 17-C-14   2019.9

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  90. Effect of hardness of mold surface on residual of alumina particles on mold surface Reviewed

    Koki Hojo, Shigehiro Ito, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama, Kei Sugiura, Tomonori Takahashi,

    Proc. International Tribology Conference Sendai 2019     page: 20-D-9   2019.9

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  91. Development of Long Life Polymer Coated Tip for Electrosurgical Knife Reviewed

    Masahiro Kobayashi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Tribology Conference Sendai 2019     page: 18-B-8   2019.9

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  92. Development of control method for friction stabilization Reviewed

    Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Tribology Conference Sendai 2019     page: 18-D-12   2019.9

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  93. Development of new active friction control system with morphing surface (Smart Surface) in poor lubrication oil Reviewed

    Yusuke Imaizumi, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama,

    Proc. International Tribology Conference Sendai 2019     page: 21-B-4   2019.9

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  94. Improvement of wear resistance of CNx coating overcoat on a-C:H coating in oil lubrication Reviewed

    Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Manabu Izumida, Naohisa Kawakami

    Proc. International Tribology Conference Sendai 2019     page: 29-D-6   2019.9

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  95. Effect of Mesh and Pillar structure of tetrahedral amorphous carbon (ta-C) on the coatings' fracture toughness Reviewed

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi, Hideki Moriguchi,

    Proc. International Tribology Conference Sendai 2019     page: 21-C-11   2019.9

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  96. Effects of Oil Additives, Sliding Speed and Mating Materials to Friction and Wear Characteristics of a-C:H Coating Reviewed

    Mohd Taufik Bin Taib, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Tribology Conference Sendai 2019     page: 21-B-2   2019.9

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  97. Investigating Defects on Wear Behavior in ta-C Coating with Prepared by Filtered Cathodic Vacuum Arc Deposition Reviewed

    Woo-Young Lee, Young-Jun Jang, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Proc. International Tribology Conference Sendai 2019     page: 20-D-3   2019.9

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  98. Development of control method for friction stabilization Reviewed

    Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Tribology Conference Sendai 2019     page: 18-D-12   2019.9

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  99. Improvement of wear resistance of CNx coating overcoat on a-C:H coating in oil lubrication Reviewed

    Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Manabu Izumida, Naohisa Kawakami

    Proc. International Tribology Conference Sendai 2019     page: 29-D-6   2019.9

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  100. Improvement of polishing efficiency and reduction of damage depth in One process using low hard abrasives and hard abrasives Reviewed

    Hiroaki Takeno, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Shogo Chiba

    Proc. International Tribology Conference Sendai 2019     page: 17-C-14   2019.9

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    Language:English   Publishing type:Research paper (other academic)  

  101. Elucidation of Wear Mechanism of DLC Film under High Oxidizing Environment and Study on Wear Reduction Method Reviewed

    Masashi Hosokawa, Yoji Ito, Makoto Takeuchi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama

    Proc. International Tribology Conference Sendai 2019     page: 21-C-12   2019.9

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    Language:English   Publishing type:Research paper (other academic)  

  102. Effects of Oil Additives, Sliding Speed and Mating Materials to Friction and Wear Characteristics of a-C:H Coating Reviewed

    Mohd Taufik Bin Taib, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Tribology Conference Sendai 2019     page: 21-B-2   2019.9

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    Language:English   Publishing type:Research paper (other academic)  

  103. Effect of Multiple Damages on AI Learning to Realize Stable Friction with Active Morphing Surface -Smart Surface- Reviewed

    Motoyuki Murashima, Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama

        page: P1-12   2019.9

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    Language:English   Publishing type:Research paper (other academic)  

  104. Effect of Mesh and Pillar structure of tetrahedral amorphous carbon (ta-C) on the coatings' fracture toughness Reviewed

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi, Hideki Moriguchi

    Proc. International Tribology Conference Sendai 2019     page: 21-C-11   2019.9

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  105. Effect of hardness of mold surface on residual of alumina particles on mold surface Reviewed

    Koki Hojo, Shigehiro Ito, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama, Kei Sugiura, Tomonori Takahashi

    Proc. International Tribology Conference Sendai 2019     page: 20-D-9   2019.9

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    Language:English   Publishing type:Research paper (other academic)  

  106. Development of new active friction control system with morphing surface (Smart Surface) in poor lubrication oil Reviewed

    Yusuke Imaizumi, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama

    Proc. International Tribology Conference Sendai 2019     page: 21-B-4   2019.9

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    Language:English   Publishing type:Research paper (other academic)  

  107. Development of Long Life Polymer Coated Tip for Electrosurgical Knife Reviewed

    Masahiro Kobayashi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Tribology Conference Sendai 2019     page: 18-B-8   2019.9

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    Language:English   Publishing type:Research paper (other academic)  

  108. Investigating Defects on Wear Behavior in ta-C Coating with Prepared by Filtered Cathodic Vacuum Arc Deposition Reviewed

    Woo-Young Lee, Young-Jun Jang, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Proc. International Tribology Conference Sendai 2019     page: 20-D-3   2019.9

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    Language:English   Publishing type:Research paper (other academic)  

  109. The Tribological Behavior of DLC Coatings Induced by B/Cr Co-Doping and Clarification of Their Mechanism Reviewed

    Ruixi Zhang, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Yuji Takimoto

    Proc. International Tribology Conference Sendai 2019     page: 21-B-1   2019.9

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  110. Active Control of Hydrodynamic Lubrication Condition by Morphing Surface Created by 3D Printer Invited Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara, Takayuki Tokoroyama

    Proc. Japan-Taiwan Tribology Symposium 2019,     page: 23-24   2019.9

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  111. Active Control of Hydrodynamic Lubrication Condition by Morphing Surface Created by 3D Printer Invited Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara, Takayuki Tokoroyama

    Proc. Japan-Taiwan Tribology Symposium 2019,     page: 23-24   2019.9

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  112. TRIBOLOGICAL PROPERTIES BETWEEN a-C:H COATINGS AND SiO2 AT HIGH TEMPERATURE Reviewed

    Kota Konishi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama,

    Proc. 8th International Conference Mechanics and materials in desing     page: Ref.6   2019.9

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  113. EFFECT OF FRACTURE TOUGHNESS ON THE WEAR BEHAVIOUR OF TETRAHEDRAL AMORPHOUS CARBON (ta-C) COATING Reviewed

    Mohd Muhyiddin Bin Mustafa , Noritsugu Umehara , Takayuki Tokoroyama , Motoyuki Murashima , Akinori Shibata , Yoshiharu Utsumi , Hideki Moriguchi,

    Proc. 8th International Conference Mechanics and materials in desing     page: Ref.33   2019.9

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  114. THE WEAR EFFECT OF MOLYBDENUM-DERIVED PARTICLES ON HYDROGENATED DIAMOND-LIKE CARBON AT HIGH TEMPERATURE Reviewed

    Khairul Amzar Mohd Kassim, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. 8th International Conference Mechanics and materials in desing     page: Ref.107   2019.9

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  115. EFFECT OF FRACTURE TOUGHNESS ON THE WEAR BEHAVIOUR OF TETRAHEDRAL AMORPHOUS CARBON (ta-C) COATING Reviewed

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi, Hideki Moriguchi

    Proc. 8th International Conference Mechanics and materials in desing     page: Ref.33   2019.9

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  116. THE WEAR EFFECT OF MOLYBDENUM-DERIVED PARTICLES ON HYDROGENATED DIAMOND-LIKE CARBON AT HIGH TEMPERATURE Reviewed

    Khairul Amzar Mohd Kassim, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. 8th International Conference Mechanics and materials in desing     page: Ref.107   2019.9

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  117. TRIBOLOGICAL PROPERTIES BETWEEN a-C:H COATINGS AND SiO2 AT HIGH TEMPERATURE Reviewed

    Kota Konishi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama

    Proc. 8th International Conference Mechanics and materials in desing     page: Ref.6   2019.9

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  118. CONCEPT FOR LOW FRICTION HYDROGEN END DLC SURFACE GENERATED BY PHOTOCATALYST REACTION Reviewed

    Motoyuki Murashima, Yusuke Imaizumi, Takazumi Yamada, Katsuno Shotaro, Tomoki Yoshida, Noritsugu Umehara, Takayuki Tokoroyama,

        page: Ref. 48   2019.9

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  119. CONCEPT FOR LOW FRICTION HYDROGEN END DLC SURFACE GENERATED BY PHOTOCATALYST REACTION Reviewed

    Motoyuki Murashima, Yusuke Imaizumi, Takazumi Yamada, Katsuno Shotaro, Tomoki Yoshida, Noritsugu Umehara, Takayuki Tokoroyama

        page: Ref. 48   2019.9

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  120. Effect of mesh structure of ta-C coating on friction and wear properties under base-oil lubrication condition Reviewed

    Mohd Myhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, A. Shibata, H. Moriguchi,

    Tribology International     page: accepted   2019.8

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  121. The clarification of low friction mechanism in base oil lubrication of ta-CNx coating by in-situ observation with reflectance spectroscopy Reviewed

        page: 1-16   2019.7

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  122. Effect of Carbonaceous Hard Coatings Overcoat on Friction and Wear Properties for Al Alloy Sliding Bearing in Oil Lubrication Reviewed

    N. Umehara, T. Kitamura, S. Ito, T. Tokoroyama, M. Murashima, M. Izumida and N. Kawakami,

    Proc. The 15th IFToMM World Congress     page: 3795-3803   2019.6

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  123. Effect of defects on tribological behavior in ta-C coating deposited by Filtered Cathodic Vacuum Arc technique, Reviewed

    W-Y. Lee, Y-J. Jang, T. Tokoroyama, M. Murashima and N. Umehara

    Proc. The 15th IFToMM World Congress     page: 3939-3944   2019.6

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  124. Effect of Carbonaceous Hard Coatings Overcoat on Friction and Wear Properties for Al Alloy Sliding Bearing in Oil Lubrication Reviewed

    N. Umehara, T. Kitamura, S. Ito, T. Tokoroyama, M. Murashima, M. Izumida, N. Kawakami

    Proc. The 15th IFToMM World Congress     page: 3795-3803   2019.6

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  125. Effect of defects on tribological behavior in ta-C coating deposited by Filtered Cathodic Vacuum Arc technique, Reviewed

    W-Y. Lee, Y-J. Jang, T. Tokoroyama, M. Murashima, N. Umehara

    Proc. The 15th IFToMM World Congress     page: 3939-3944   2019.6

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  126. Effect of Carbon Diffusion on Friction and Wear Behaviors of Diamond-Like Carbon Coating Against Germanium in Boundary Base Oil Lubrication

    Aboua Kouami, Auxence Melardot, Umehara Noritsugu, Kousaka Hiroyuki, Tokoroyama Takayuki, Murashima Motoyuki, Mabuchi Yutaka, Higuchi Tsuyoshi, Kawaguchi Masahiro

    TRIBOLOGY LETTERS   Vol. 67 ( 2 )   2019.6

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    DOI: 10.1007/s11249-019-1179-2

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    Scopus

  127. Understanding morphology and tribological behavior of ta-C coating deposited by FCVA method Reviewed

    Woo-Young Lee, Young-Jun Jang, takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara,

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-3-3   2019.4

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  128. Development of control method for friction stabilization Reviewed

    Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: FR-B-2-3   2019.4

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  129. The tribological properties of DLCs with various dopants and clarification of the mechanism at 200oC Reviewed

    Ruixi Zhang, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-1-3   2019.4

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  130. Effect of doped tantalum in ta-CNx film or tantalum as counterpart material on the friction and wear properties of ta-CNx Reviewed

    Koki Hojo, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-3-4   2019.4

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  131. Elucidation of interaction in polishing process using low hardness abrasive grains and hard abrasive grains Reviewed

    Hiroaki Takeno, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Shogo Chiba

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: FR-D-1-4   2019.4

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  132. Preventing Coagulated-Blood Adhesion on a Coated Electrosurgical Knife Reviewed

    Masahiro Kobayashi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-2-4   2019.4

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  133. Development of new active friction control system with morphing surface (Smart Surface) in dry condition Reviewed

    Yusuke Imaizumi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: FR-E-1-2   2019.4

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  134. Mechanism of improvement wear resistance about CNx coating overcoat on a-C:H coating in oil lubrication Reviewed

    Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Manabu Izumida and Naohisa Kawakami,

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: Th-E-1-2   2019.4

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  135. Effect of mesh structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition with regard to fracture behavior Reviewed

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi and Hideki Moriguchi,

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-3-2   2019.4

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  136. Development of control method for friction stabilization Reviewed

    Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: FR-B-2-3   2019.4

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  137. Elucidation of interaction in polishing process using low hardness abrasive grains and hard abrasive grains Reviewed

    Hiroaki Takeno, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Shogo Chiba

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: FR-D-1-4   2019.4

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    Language:English   Publishing type:Research paper (other academic)  

  138. Effect of mesh structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition with regard to fracture behavior Reviewed

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi, Hideki Moriguchi

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-3-2   2019.4

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  139. Effect of doped tantalum in ta-CNx film or tantalum as counterpart material on the friction and wear properties of ta-CNx Reviewed

    Koki Hojo, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-3-4   2019.4

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  140. Development of new active friction control system with morphing surface (Smart Surface) in dry condition Reviewed

    Yusuke Imaizumi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: FR-E-1-2   2019.4

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  141. Mechanism of improvement wear resistance about CNx coating overcoat on a-C:H coating in oil lubrication Reviewed

    Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Manabu Izumida, Naohisa Kawakami

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: Th-E-1-2   2019.4

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  142. Understanding morphology and tribological behavior of ta-C coating deposited by FCVA method Reviewed

    Woo-Young Lee, Young-Jun Jang, takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-3-3   2019.4

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  143. The tribological properties of DLCs with various dopants and clarification of the mechanism at 200oC Reviewed

    Ruixi Zhang, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-1-3   2019.4

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  144. Preventing Coagulated-Blood Adhesion on a Coated Electrosurgical Knife Reviewed

    Masahiro Kobayashi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Proc. International Conference on Manufacturins, Machine Design and Tribology 2019     page: TH-E-2-4   2019.4

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  145. Effect of oxygen on degradation of defects on ta-C coatings deposited by filtered arc deposition

    Murashima Motoyuki, Deng Xingrui, Izuoka Hiroto, Umehara Noritsugu, Kousaka Hiroyuki

    SURFACE & COATINGS TECHNOLOGY   Vol. 362   page: 200 - 207   2019.3

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    DOI: 10.1016/j.surfcoat.2019.01.115

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  146. Tribological properties of ta-CNx coating sliding against steel and sapphire in unlubricated condition

    Liu Xiaoxu, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    TRIBOLOGY INTERNATIONAL   Vol. 131   page: 102 - 111   2019.3

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    DOI: 10.1016/j.triboint.2018.10.022

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  147. Approaching for low friction with high permittivity material under oil lubrication Invited

    Motoyuki Murashima

    Proc. 2019 Hydrogenius & I2CNER Tribology Symposium -Hydrogen in Tribological Processes-     page: 19-26   2019.1

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  148. Approaching for low friction with high permittivity material under oil lubrication Invited

    Motoyuki Murashima

    Proc. 2019 Hydrogenius & I2CNER Tribology Symposium -Hydrogen in Tribological Processes-     page: 19-26   2019.1

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  149. The Wear Classification of MoDTC-derived Particles on Silicon and Hydrogenated Diamond-like Carbon at Room Temperature Reviewed

    K.A.M Kassim, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Tribology International,     page: accepted   2019.1

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  150. The Wear Classification of MoDTC-derived Particles on Silicon and Hydrogenated Diamond-like Carbon at Room Temperature Reviewed

    K.A.M Kassim, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Tribology International,     page: accepted   2019.1

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  151. Effect of Pillar and Mesh Structure of Tetrahedral Amorphous Carbon (ta-C) Coatings on the Wear Properties and Fracture Toughness of the Coating

    Bin Mustafa Mohd, Muhyiddin, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki, Shibata Akinori, Utsumi Yoshiharu, Moriguchi Hideki

    TRIBOLOGY ONLINE   Vol. 14 ( 5 ) page: 388 - 397   2019

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    DOI: 10.2474/trol.14.388

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  152. Multiple Friction Control using Morphing Surface -Smart Surface- Invited Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    Proc. Taiwan-Japan Tribology Symposium 2018     page: 18-19   2018.11

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  153. Multiple Friction Control using Morphing Surface -Smart Surface- Invited Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    Proc. Taiwan-Japan Tribology Symposium 2018     page: 18-19   2018.11

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  154. Development of Morphing Surface made by Additive Manufacturing and Active Friction Control Invited Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    Proc. 2nd Korea-Japan Tribology Symposium     page: 19-20   2018.10

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  155. Effect of Surface Energy of Carbonaceous hard Coatings on Friction Coefficient with In-situ Measurement in ESEM Invited Reviewed

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. 2nd Korea-Japan Tribology Symposium     page: 13   2018.10

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  156. Development of Morphing Surface made by Additive Manufacturing and Active Friction Control Invited Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    Proc. 2nd Korea-Japan Tribology Symposium     page: 19-20   2018.10

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  157. Effect of Surface Energy of Carbonaceous hard Coatings on Friction Coefficient with In-situ Measurement in ESEM Invited Reviewed

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. 2nd Korea-Japan Tribology Symposium     page: 13   2018.10

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  158. The effect of atmosphere gas on surface energy of carbonaceous hard coatings wear track by in-situ measurement in ESEM Reviewed

    Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No162   2018.9

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  159. The effects of oil additives and mating materials to the friction, wear and seizure characteristics of a-C:H coating

    bin Taib Mohd Taufik, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    JURNAL TRIBOLOGI   Vol. 18   page: 1-19   2018.9

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  160. Effect of inner structure made by 3D printer on wear and friction Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Shouta Yoshino, Noritsugu Umehara

    Proc. Asia International Conference on Tribology 2018     page: No151   2018.9

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  161. Investigating run-in behavior of ta-C friction and understating wear behavior at high temperature Reviewed

    Woo-Young Lee, Takayuki Tokoroyama, Motoyuki Murashima, Young-Jun Jang, Jong-Kuk Kim, Noritsugu Umehara

    Proc. Asia International Conference on Tribology 2018     page: No045   2018.9

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  162. Effect of structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition Reviewed

    Mohd Muhyiddin Bin Mustafa, Noritusug Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Hideki Moriguch

    Proc. Asia International Conference on Tribology 2018     page: No078   2018.9

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  163. Noble method of surface energy estimation for local friction area with in-situ friction tester in ESEM Reviewed

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No088   2018.9

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  164. Tribological properties of UV irradiated DLC under PAO oil lubrication including ZnDTP, MoDTC and GMO Reviewed

    Mohd Taufik Bin Taib, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No093   2018.9

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  165. Wear properties of a-C:H and Si-DLC in pressurized high-temperature water Reviewed

    Makoto Takeuchi, Kiichi. Okuno, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No098   2018.9

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  166. The clarification of low friction mechanism in oil lubrication for B-DLC coating by in-situ observation of friction area Reviewed

    Tatsuya Okamoto, Noritsugu Umehara, Motoyuki Murashima, Koji Saito, Kazukoshi Manabe, Keiji Hayashi

    Proc. Asia International Conference on Tribology 2018     page: No145   2018.9

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  167. The effect of molybdenum carbide (Mo2C) particles on wear properties of diamond-like carbon under boundary lubrication Reviewed

    Khairul Amzar Mohd Bin Kassim, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Proc. Asia International Conference on Tribology 2018     page: No158   2018.9

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  168. Effect of inner structure made by 3D printer on wear and friction Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Shouta Yoshino, Noritsugu Umehara

    Proc. Asia International Conference on Tribology 2018     page: No151   2018.9

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  169. Investigating run-in behavior of ta-C friction and understating wear behavior at high temperature Reviewed

    Woo-Young Lee, Takayuki Tokoroyama, Motoyuki Murashima, Young-Jun Jang, Jong-Kuk Kim, Noritsugu Umehara

    Proc. Asia International Conference on Tribology 2018     page: No045   2018.9

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  170. Wear properties of a-C:H and Si-DLC in pressurized high-temperature water Reviewed

    Makoto Takeuchi, Kiichi. Okuno, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No098   2018.9

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  171. Tribological properties of UV irradiated DLC under PAO oil lubrication including ZnDTP, MoDTC and GMO Reviewed

    Mohd Taufik Bin Taib, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No093   2018.9

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  172. The effects of oil additives and mating materials to the friction, wear and seizure characteristics of a-C:H coating

    bin Taib Mohd Taufik, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    JURNAL TRIBOLOGI   Vol. 18   page: 1-19   2018.9

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  173. The effects of oil additives and mating materials to the friction, wear and seizure characteristics of a-C:H coating

    bin Taib Mohd Taufik, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    JURNAL TRIBOLOGI   Vol. 18   page: 1-19   2018.9

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  174. The effect of molybdenum carbide (Mo2C) particles on wear properties of diamond-like carbon under boundary lubrication Reviewed

    Khairul Amzar Moh, Bin Kassim, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Proc. Asia International Conference on Tribology 2018     page: No158   2018.9

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  175. The effect of atmosphere gas on surface energy of carbonaceous hard coatings wear track by in-situ measurement in ESEM Reviewed

    Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No162   2018.9

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  176. The clarification of low friction mechanism in oil lubrication for B-DLC coating by in-situ observation of friction area Reviewed

    Tatsuya Okamoto, Noritsugu Umehara, Motoyuki Murashima, Koji Saito, Kazukoshi Manabe, Keiji Hayashi

    Proc. Asia International Conference on Tribology 2018     page: No145   2018.9

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  177. Noble method of surface energy estimation for local friction area with in-situ friction tester in ESEM Reviewed

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No088   2018.9

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  178. ベース油中CNxの摩擦界面その場反射分光分析による摩擦メカニズムの解明 Reviewed

    岡本竜也,梅原徳次,村島基之,斉藤浩二,眞鍋和幹,林圭二

    トライボロジスト   Vol. 63 ( 11 ) page: 755-767   2018.8

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  179. FCVA 法によるホウ素含有炭素ターゲットを用いた ta-C:B 膜の成膜および 300oC までのトライボロジー特性 Reviewed

    根本 公紀,梅原 徳次,野老山 貴行,村島 基之,瀧本 裕治,中道 健司

    トライボロジスト   Vol. 63 ( 10 ) page: 699-705   2018.8

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  180. FCVA 法によるホウ素含有炭素ターゲットを用いた ta-C:B 膜の成膜および 300oC までのトライボロジー特性 Reviewed

    根本 公紀, 梅原 徳次, 野老山 貴行, 村島 基之, 瀧本 裕治, 中道 健司

    トライボロジスト   Vol. 63 ( 10 ) page: 699-705   2018.8

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  181. The Effect of UV Irradiation to a-C:H on Friction and Wear Properties under PAO Oil Lubrication Including MoDTC and ZnDTP Reviewed

    Mohd Taufik bin Taib, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima

    Tribology Online   Vol. 13   page: 119-130   2018.7

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  182. The Effect of UV Irradiation to a-C:H on Friction and Wear Properties under PAO Oil Lubrication Including MoDTC and ZnDTP Reviewed

    Mohd Taufik bin Taib, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima

    Tribology Online   Vol. 13   page: 119-130   2018.7

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  183. The effects of oil additives and mating materials to the friction, wear and seizure characteristics of a-C:H Reviewed

    Mohd Taufik bin Taib, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    JURNAL TRIBOLOGI   Vol. 18   page: 1-19   2018.7

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  184. EFFECT OF SURFACE ENERGY ON FRICTION COEFFICIENT OF CARBONACEOUS HARD COATINGS BY IN-SITU MEASUREMENT IN ESEM Reviewed

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. 6th International Conference on Integrity-Reliability-Failure     page: Ref. 7091   2018.7

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  185. PROPOSAL OF DEVELOPMENT GUIDLINE FOR LOW FRICTIONAL MATERIAL IN OIL LUBRICATION WITH HIGH PERMITTIVITY MATERIAL Reviewed

    Motoyuki Murashima, See-Jun Oh, Takaaki Miyachi, Noritsugu Umehara, Takayuki Tokoroyama, Kota Konishi, Tatsuya Okamoto

    Proc. 6th International Conference on Integrity-Reliability-Failure     page: Ref. 7302   2018.7

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    DOI: 0

  186. EFFECT OF SURFACE ENERGY ON FRICTION COEFFICIENT OF CARBONACEOUS HARD COATINGS BY IN-SITU MEASUREMENT IN ESEM Reviewed

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. 6th International Conference on Integrity-Reliability-Failure     page: Ref. 7091   2018.7

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  187. Comparison of Conventional Plasma Carburizing and New Plasma Carburizing using Microwave-enhanced High-density Plasma Generated near Substrate Reviewed

    Keiichiro Noda, Hiroyuki Kousaka, Noritusug Umehara, Motoyuki Murashima and Takayuki Tokoroyama

        page: 06P49   2018.3

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  188. Plasma Enhanced Chemical Vapor Deposition of Carbon Film into an 100-μm-Diameter Hole under the Assistance of Source Gas Blowing Reviewed

    Rihito Ota, Hiroyuki Kousaka, Laxminarayan L. Raja, Noritsugu Umehara, Takayuki Tokoroyama and Motoyuki Murashima

        page: 06P36   2018.3

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  189. Comparison of Conventional Plasma Carburizing and New Plasma Carburizing using Microwave-enhanced High-density Plasma Generated near Substrate Reviewed

    Keiichiro Noda, Hiroyuki Kousaka, Noritusug Umehara, Motoyuki Murashima, Takayuki Tokoroyama

        page: 06P49   2018.3

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  190. Plasma Enhanced Chemical Vapor Deposition of Carbon Film into an 100-μm-Diameter Hole under the Assistance of Source Gas Blowing Reviewed

    Rihito Ota, Hiroyuki Kousaka, Laxminarayan, L. Raja, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

        page: 06P36   2018.3

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  191. Effect of nanoparticles as lubricant additives on friction and wear behavior of tetrahedral amorphous carbon (ta-C) coating Reviewed

    Li Xiang, Murashima Motoyuki, Umehara Noritsugu

    JURNAL TRIBOLOGI   Vol. 16   page: 15-29   2018.3

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  192. Effect of nanoparticles as lubricant additives on friction and wear behavior of tetrahedral amorphous carbon (ta-C) coating Reviewed

    Li Xiang, Murashima Motoyuki, Umehara Noritsugu

    JURNAL TRIBOLOGI   Vol. 16   page: 15-29   2018.3

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  193. Effect of Carbon Diffusion on Friction and Wear Behaviors of Diamond-Like Carbon Coating Against Cr-Plating in Boundary Base Oil Lubrication

    Aboua Kouami, Auxence Melardot, Umchara Noritsugu, Kousaka Hiroyuki, Tokoroyama Takayuki, Murashima Motoyuki, Mabuchi Yutaka, Higuchi Tsuyoshi, Kawaguchi Masahiro

    TRIBOLOGY ONLINE   Vol. 13 ( 5 ) page: 290 - 300   2018

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    Copyright © 2018 Japanese Society of Tribologists Investigations on tribological behaviors of Diamond-like Carbon (DLC) coating against other materials are strongly needed for scientific and industrial purposes. Recently, carbon diffusion has been found to play a key role in the wear of hydrogenated amorphous carbon (a-C:H) DLC coating when it is rubbed against steel counterpart material in boundary lubrication. Chromium has been reported to decrease carbon diffusion due to increase of the activation energy. In this research, we investigated on the effects of carbon diffusion on friction and wear properties of a-C:H coating when rubbed against Cr plating material. Results show that compared to steel counterpart, a-C:H coating exhibits lower friction coefficient, lower wear rate, and lower carbon diffusion rate when rubbed against Cr plating counterpart.

    DOI: 10.2474/trol.13.290

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  194. The Effect of UV Irradiation to a-C:H on Friction and Wear Properties under PAO Oil Lubrication Including MoDTC and ZnDTP

    bin Taib Mohd Taufik, Umchara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    TRIBOLOGY ONLINE   Vol. 13 ( 3 ) page: 119 - 130   2018

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    DOI: 10.2474/trol.13.119

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  195. Effect of ZnDTP triboflim's morphology on friction behaviors of DLC coatings: Tribofilm characterization by 3D scanning electron microscope observation

    Aboua Kouami, Auxence Melardot, Umehara Noritsugu, Kousaka Hiroyuki, Tokoroyama Takayuki, Murashima Motoyuki, Tasdemir Haci Abdullah, Mabuchi Yutaka, Higuchi Tsuyoshi

    JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING   Vol. 12 ( 7 ) page: JAMDSM0129 - JAMDSM0129   2018

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    © 2018 The Japan Society of Mechanical Engineers. ZnDTP antiwear additive for lubricating oil is known to absorb strongly on sliding surfaces in boundary lubricated tribosystems, forming a tribofilm, which is able to reduce the wear of involved surfaces. It is also known to increase the friction coefficient in most DLC/DLC contacts, with the exception of ta-C DLC / ta-C DLC contact, for which the difference in friction behaviors between a base oil + ZnDTP additive lubricated tribosystem and a base oil lubricated tribosystem is not very significant. In this study we investigate a characterization method of the shape of the tribofilm formed on different types of DLC coatings and on the relation between the shape of the tribofilm and the friction behavior of the related DLC coating. Results show that compared to other investigated DLC types, the tribofilm formed on ta-C DLC has some unique characteristic topography features that promote lower friction coefficient.

    DOI: 10.1299/jamdsm.2018jamdsm0129

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  196. EFFECT OF SURFACE ENERGY ON FRICTION COEFFICIENT OF CARBONACEOUS HARD COATINGS BY IN-SITU MEASUREMENT IN ESEM

    Nakao Taichi, Terada Makoto, Umehara Noritsugu, Murashima Motoyuki

    IRF2018: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON INTEGRITY-RELIABILITY-FAILURE     page: 925-926   2018

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  197. PROPOSAL OF DEVELOPMENT GUIDLINE FOR LOW FRICTIONAL MATERIAL IN OIL LUBRICATION WITH HIGH PERMITTIVITY MATERIAL

    Murashima Motoyuki, Oh See-Jun, Miyachi Takaaki, Umehara Noritsugu, Tokoroyama Takayuki, Konishi Kota, Okamoto Tatsuya

    IRF2018: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON INTEGRITY-RELIABILITY-FAILURE     page: 941-942   2018

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  198. Wear properties of a-C:H and Si-DLC in pressurized high-temperature water

    Takeuchi M., Okuno K., Umehara N., Murashima M.

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 217-218   2018

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  199. The effect of molybdenum carbide (Mo2C) particles on wear properties of diamond-like carbon under boundary lubrication

    Kassim K. A. M., Tokoroyama T., Murashima M., Umehara N.

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 348-349   2018

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  200. The effect of atmosphere gas on surface energy of carbonaceous hard coatings wear track by in-situ measurement in ESEM

    Terada M., Umehara N., Murashima M.

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 357-358   2018

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  201. The clarification of low friction mechanism in oil lubrication for B-DLC coating by in-situ observation of friction area

    Okamoto T., Umehara N., Murashima M., Saito K., Manabe K., Hayashi K.

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 319-320   2018

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  202. Noble method of surface energy estimation for local friction area with in-situ friction tester in ESEM

    Nakao T., Terada M., Umehara N., Murashima M.

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 196-197   2018

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  203. Investigating run-in behavior of ta-C friction and understating wear behavior at high temperature

    Lee Woo-Young, Tokoroyama Takayuki, Murashima Motoyuki, Jang Young-Jun, Kim Jong-Kuk, Umehara Noritsugu

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 100-102   2018

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  204. Effect of structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition

    Mustafa M. M. B., Umehara N., Tokoroyama T., Murashima M., Shibata A., Moriguchi H.

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 173-175   2018

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  205. Effect of inner structure made by 3D printer on wear and friction

    Murashima Motoyuki, Kawaguchi Masato, Yoshino Shouta, Umehara Noritsugu

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 332-333   2018

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  206. EFFECT OF SURFACE ENERGY ON FRICTION COEFFICIENT OF CARBONACEOUS HARD COATINGS BY IN-SITU MEASUREMENT IN ESEM

    Nakao Taichi, Terada Makoto, Umehara Noritsugu, Murashima Motoyuki

    IRF2018: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON INTEGRITY-RELIABILITY-FAILURE     page: 925-926   2018

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  207. PROPOSAL OF DEVELOPMENT GUIDLINE FOR LOW FRICTIONAL MATERIAL IN OIL LUBRICATION WITH HIGH PERMITTIVITY MATERIAL

    Murashima Motoyuki, Oh See-Jun, Miyachi Takaaki, Umehara Noritsugu, Tokoroyama Takayuki, Konishi Kota, Okamoto Tatsuya

    IRF2018: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON INTEGRITY-RELIABILITY-FAILURE     page: 941-942   2018

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  208. Effect of mating materials on wear properties of amorphous hydrogenated carbon (a-C:H) coating and tetrahedral amorphous carbon (ta-C) coating in base oil boundary lubrication condition

    Li Xiang, Sawaki Toshiya, Kousaka Hiroyuki, Murashima Motoyuki, Umehara Noritsugu

    JURNAL TRIBOLOGI   Vol. 15   page: 1-20   2017.12

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  209. Effect of mating materials on wear properties of amorphous hydrogenated carbon (a-C:H) coating and tetrahedral amorphous carbon (ta-C) coating in base oil boundary lubrication condition

    Li Xiang, Sawaki Toshiya, Kousaka Hiroyuki, Murashima Motoyuki, Umehara Noritsugu

    JURNAL TRIBOLOGI   Vol. 15   page: 1-20   2017.12

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  210. Effect of oil temperature and counterpart material on the wear mechanism of ta-CNx coating under base oil lubrication

    Xiaoxu Liu, Ryo Yamaguchi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama

    WEAR   Vol. 390-391   page: 312 - 321   2017.11

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    Tetrahedral amorphous carbon nitride (ta-CNx), as an emerging and promising diamond-like carbon (DLC), has better mechanical properties than amorphous carbon nitride (a-CNx) to ensure the sufficient durability, and overcomes the limit of high internal stress of tetrahedral amorphous carbon (ta-C), which makes ta-CNx coatings of great worth of research for the tribological and mechanical applications. In this study, we present the effects of oil temperature and counterpart material on the wear behavior of ta-CNx coatings under base-oil lubrication, and further clarify the wear mechanism. ta-C and ta-CNx coatings with N/C atomic ratio of 2.2% and 11.0% were deposited by an ion beam assisted filtered arc deposition (IBA-FAD) system, and the tribological tests were performed using a ball-on-disk tribo-tester with ta-C and ta-CNx coated steel ball sliding against uncoated disk under base-oil lubrication. The results show that nitrogen doping tends to decrease the hardness and Young's modulus by reducing the sp(3) structure. Sliding against steel disk, with increase of sliding distance ta-CNx shows obviously distinct wear behavior compared to ta-C, much more slowly increasing wear volume, exhibiting excellent wear resistance. Increasing oil temperature from room temperature to 120 degrees C results in rising wear rates of all the three coatings, with totally worn out ta-C and much lower wear rate of ta-CNx, which decreases by more than half than ta-C for high nitrogen content ta-CNx. However, as the counterpart material changed from steel to alumina, the wear rate presents oppositely increasing tendency with N/C ratio, probably caused by the change of deciding factor to hardness in this mechanical wear. It is found that the wear performance of ta-CNx coating has a clear dependence on the oil temperature and counterpart material. Based on the results, the better wear resistance of softer ta-CNx against steel could be attributed to the less tribo-chemical wear between carbon and iron, due to the nitrogen doping partial passivation effect.

    DOI: 10.1016/j.wear.2017.08.012

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  211. Effect of Loop size of Looped Carbon Fiber Blush on Friction Coefficient Reviewed

    Proc. The 6th World Tribology Congress     page: 335   2017.9

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  212. The effect of UV irradiation to a-C:H on friction and wear properties under PAO oil lubrication including MoDTC and ZnDTP Reviewed

    Mohd Taugik BIN TAIB, Noritsugu UMEHARA, Motoyuki MURASHIMA

        page: 0   2017.9

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  213. Tribological study of thick ta-C coating at elevated temperatures prepared under different substrate bias voltages Reviewed

    Woo Young LEE, Noritsugu UMEHARA, Takayuki TOKOROYAMA, Motoyuki MURASHIMA, Young Jun JANG, Jong Kuk KIM

        page: 0   2017.9

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  214. Atmospheric helium plasma irradiation to Si containing DLC surface during sliding against plastic balls Reviewed

    Hiroyuki KOUSAKA, Shunsuke OKUMURA, Noritsugu UMEHARA, Motoyuki MURASHIMA

        page: 0   2017.9

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  215. Wear behavior of tetrahedral amorphous carbon nitride sliding against steel and alumina disks under PAO oil lubrication Reviewed

    Xiaoxu LIU, Ryo YAMAGUCHI, Noritsugu UMEHARA, Motoyuki MURASHIMA

        page: 0   2017.9

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  216. Atmospheric helium plasma irradiation to Si containing DLC surface during sliding against plastic balls Reviewed

    Hiroyuki KOUSAKA, Shunsuke OKUMURA, Noritsugu UMEHARA, Motoyuki MURASHIMA

        page: 0   2017.9

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  217. Effect of Loop size of Looped Carbon Fiber Blush on Friction Coefficient Reviewed

    Motoyuki Murashima, Eishun Kohno, Noritsugu Umehara, Tomoki Kitamura, Taichi Nakao, Toshiya Sawaki

    Proc. The 6th World Tribology Congress     page: 335   2017.9

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  218. The effect of UV irradiation to a-C:H on friction and wear properties under PAO oil lubrication including MoDTC and ZnDTP Reviewed

    Mohd Taugik BIN TAIB, Noritsugu UMEHARA, Motoyuki MURASHIMA

        page: 0   2017.9

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  219. Wear behavior of tetrahedral amorphous carbon nitride sliding against steel and alumina disks under PAO oil lubrication Reviewed

    Xiaoxu LIU, Ryo YAMAGUCHI, Noritsugu UMEHARA, Motoyuki MURASHIMA

        page: 0   2017.9

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  220. Tribological study of thick ta-C coating at elevated temperatures prepared under different substrate bias voltages Reviewed

    Woo Young LEE, Noritsugu UMEHARA, Takayuki TOKOROYAMA, Motoyuki MURASHIMA, Young Jun JANG, Jong Kuk KIM

        page: 0   2017.9

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  221. Novel properties with complex structure created by 3D Printer Invited Reviewed

    Motoyuki Murashima

    Proc. Mini-symposium in Sakura Science     page: 0   2017.9

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  222. Novel properties with complex structure created by 3D Printer Invited Reviewed

    Motoyuki Murashima

    Proc. Mini-symposium in Sakura Science     page: 0   2017.9

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  223. Clarification of effect of transformed layer and oil film on low friction coefficient of CNx coating in PAO oil lubrication by in-situ observation of friction area with reflectance spectroscopy

    Hidenori Nishimura, Noritsugu Umehara, Hiroyuki Kousaka, Motoyuki Murashima

    TRIBOLOGY INTERNATIONAL   Vol. 113   page: 383 - 388   2017.9

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    In order to clarify a low friction mechanism of CNx (Carbon Nitride) coating in PAO (Poly Alpha Olefin) oil lubrication, we measured reflectance spectrum at friction area in-situ by reflectance spectroscopy. And we obtained thicknesses and polarizabilities of oil film and transformed layer formed on bulk CNx coating during friction test by analyzing reflectance spectrum. From results, we concluded that the increments of polarizabilities of transformed layer and oil film had an effect on increasing thickness of oil film, and then the lubricated condition changed from boundary to mixed lubrication. Finally CNx coating showed low friction coefficient in PAO oil lubrication.

    DOI: 10.1016/j.triboint.2016.10.029

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  224. WEAR REDUCTION WITH INNER STRUCTURE MADE BY 3D PRINTER Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Masaya Tanaka, Noritsugu Umehara, Kouki Nemoto, Kiichi Okuno and Kota Konishi

    Proc. 7th International Conference on Mechanics and Materials in Design     page: 6610   2017.6

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  225. THE EFFECT OF FIBER MATERIAL ON FRICTIONAL BEHAVIOR OF LOOPED FIBER BRUSH Reviewed

    Motoyuki Murashima, Eishun Kohno, Noritsugu Umehara, Tomoki Kitamura, Taichi Nakao and Toshiya Sawaki

    Proc. 7th International Conference on Mechanics and Materials in Design     page: 6609   2017.6

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  226. THE EFFECT OF FIBER MATERIAL ON FRICTIONAL BEHAVIOR OF LOOPED FIBER BRUSH Reviewed

    Motoyuki Murashima, Eishun Kohno, Noritsugu Umehara, Tomoki Kitamura, Taichi Nakao, Toshiya Sawaki

    Proc. 7th International Conference on Mechanics and Materials in Design     page: 6609   2017.6

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  227. WEAR REDUCTION WITH INNER STRUCTURE MADE BY 3D PRINTER Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Masaya Tanaka, Noritsugu Umehara, Kouki Nemoto, Kiichi Okuno, Kota Konishi

    Proc. 7th International Conference on Mechanics and Materials in Design     page: 6610   2017.6

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  228. Wear Reduction by Increase of Contact Area with Inner Structure Made by 3D Printer Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Masaya Tanaka, Noritsugu Umehara, Kouki Nemoto, Kouta Konishi and Kiichi Okuno

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0-FR-3-B-3   2017.4

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  229. Proposal for a Method Improving the Surface Roughness of Thermoplastic CFRP Reviewed

    Takaharu Murooka, Noritsugu Umehara and Motoyuki Murashima

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  230. Tribological behavior of ta-C:B coatings deposited by Filtered Arc Deposition under sliding at elevated temperature Reviewed

    Kouki Nemoto, Yuji Takimoto, Noritsugu Umehara and Motoyuki Murashima

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  231. Development of Simple Bearing Friction Tester for Evaluation ofUltra Low friction, Seizure Resistance and Wear Resistance of Carbonaceous Hard Coatings Reviewed

    Tomoki Kitamura, Noritsugu Umehara, Motuyuki Murashima, Manabu Izumida, Satoshi Takayanagi and Yoshiaki Sato

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  232. Wear behavior of tetrahedral amorphous carbon nitride under poly alpha-olefin (PAO) lubrication Reviewed

    Xiaoxu Liu, Ryo Yamaguchi, Noritsugu Umehara and Motoyuki Murashima

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  233. The Influence of Mo Tribofilms on Counterpart Steel Ball for Friction and Wear of a-C:H Coated Disc in Base Oil Containing MoDTC Reviewed

    Imari Kameda, Kenji Ohara, Kiyoshi Hanyuda, Yasushi Kawamura, Noritsugu Umehara and Motoyuki Murashima

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  234. Development of Simple Bearing Friction Tester for Evaluation ofUltra Low friction, Seizure Resistance and Wear Resistance of Carbonaceous Hard Coatings Reviewed

    Tomoki Kitamura, Noritsugu Umehara, Motouyuki Murashima, Manabu Izumida, Satoshi Takayanagi, Yoshiaki Sato

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  235. Proposal for a Method Improving the Surface Roughness of Thermoplastic CFRP Reviewed

    Takaharu Murooka, Noritsugu Umehara, Motoyuki Murashima

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  236. Wear Reduction by Increase of Contact Area with Inner Structure Made by 3D Printer Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Masaya Tanaka, Noritsugu Umehara, Kouki Nemoto, Kouta Konishi, Kiichi Okuno

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0-FR-3-B-3   2017.4

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  237. Wear behavior of tetrahedral amorphous carbon nitride under poly alpha-olefin (PAO) lubrication Reviewed

    Xiaoxu Liu, Ryo Yamaguchi, Noritsugu Umehara, Motoyuki Murashima

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  238. Tribological behavior of ta-C:B coatings deposited by Filtered Arc Deposition under sliding at elevated temperature Reviewed

    Kouki Nemoto, Yuji Takimoto, Noritsugu Umehara, Motoyuki Murashima

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  239. The Influence of Mo Tribofilms on Counterpart Steel Ball for Friction and Wear of a-C:H Coated Disc in Base Oil Containing MoDTC Reviewed

    Imari Kameda, Kenji Ohara, Kiyoshi Hanyuda, Yasushi Kawamura, Noritsugu Umehara, Motoyuki Murashima

    Proc. The 7th International Conference on Manufacturing, Machine Design and Tribology     page: 0   2017.4

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  240. Gas blowing from multiple holes for ultra-high-speed and uniform DLC coating with MVP method Reviewed

    Hiroto Izuoka, Hiroyuki Kousaka, Noritsugu Umehara and Motoyuki Murasima

    Proc. 9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and nanomaterials     page: 02P74   2017.3

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  241. Effect of plasma irradiation on the interface between DLC and plastic Reviewed

    Shunsuke Okumura, Hiroyuki Kousaka, Noritsugu Umehara and Motoyuki Murasima

    Proc. 9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and nanomaterials     page: 04P80   2017.3

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  242. Effect of plasma irradiation on the interface between DLC and plastic Reviewed

    Shunsuke Okumura, Hiroyuki Kousaka, Noritsugu Umehara, Motoyuki Murasima

    Proc. 9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and nanomaterials     page: 04P80   2017.3

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  243. Gas blowing from multiple holes for ultra-high-speed and uniform DLC coating with MVP method Reviewed

    Hiroto Izuoka, Hiroyuki Kousaka, Noritsugu Umehara, Motoyuki Murasima

    Proc. 9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and nanomaterials     page: 02P74   2017.3

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  244. Clarification of high wear resistance mechanism of ta-CNx coating under poly alpha-olefin (PAO) lubrication

    Xiaoxu Liu, Ryo Yamaguchi, Noritsugu Umehara, Xingrui Deng, Hiroyuki Kousaka, Motoyuki Murashima

    TRIBOLOGY INTERNATIONAL   Vol. 105   page: 193 - 200   2017.1

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    Tetrahedral amorphous carbon nitride (ta-CNx) is suitable for tribological application due to its excellent mechanical and adhesion properties. In this study, ta-CNx coatings with N/C ratios (0-11%) are deposited by ion beam assisted filtered arc deposition (IBA-FAD), and the tribological properties are investigated with a ball on-disk tribo-tester. The results show that nitrogen doping decreases the fraction of sp(3) bonding, hardness, Young's modulus and roughness. In oil ta-CNx presents slightly decreasing friction coefficient and improving wear resistance with the N/C ratio, indicating softer ta-CNx with better wear resistance. The lower surface roughness after friction of high nitrogen content ta-CNx makes it more likely to transit to mixed lubrication, resulting in lower contact load that can explain the better wear resistance.

    DOI: 10.1016/j.triboint.2016.10.016

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  245. Effect of electric field on adhesion of thermoplastic resin against steel plate Reviewed

    Motoyuki Murashima, Noritsugu Umehara, Hiroyuki Kousaka, Xingrui Deng

    Tribology Online   Vol. 12 ( 2 ) page: 42 - 48   2017

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    This work shows new method which controls adhesion strength between acrylic resin and metal mold with electric field. Usage of electric field is considered as a new solution to control adhesion of thermoplastic resin in Carbon-Fiber-Reinforced ThermoPlastic (thermoplastic CFRP) stamping process because this method can prevent CFRP from its degradation. In this work, we establish new adhesion tester which can apply Direct Current (DC) or Alternating Current (AC) field on metal specimens. In the results, when DC -12 V/mm is imposed on metal specimens, adhesion strength increases to 0.81 MPa which is 57% higher than that of no field condition. Negative component of surface energy after imposing DC -12 V/mm on metal specimens is 7.6 mJ/m2. This value is 56% smaller than that of no field condition. When AC electric fields is imposed, adhesion strength decreases from no electric field condition. The most effective AC field condition is AC 10 V/mm with 1 MHz, in which case adhesion strength is 0.29 MPa. This value is 44% lower than that of no field condition.

    DOI: 10.2474/trol.12.42

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  246. Effect of temperature and counterpart material on the wear behavior of ta-CNx coating in base-oil

    Liu Xiaoxu, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    PROCEEDINGS OF SAKURA SYMPOSIUM ON MECHANICAL SCIENCE AND ENGINEERING 2017     page: 22-25   2017

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  247. WEAR REDUCTION WITH INNER STRUCTURE MADE BY 3D PRINTER

    Murashima Motoyuki, Kawaguchi Masato, Tanaka Masaya, Umehara Noritsugu, Nemoto Kouki, Okuno Kiichi

    PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON MECHANICS AND MATERIALS IN DESIGN (M2D2017)     page: 1381-1384   2017

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  248. The effect of inner structures created by 3D-additive manufacturing on wear reduction of 3D printed material

    Murashima Motoyuki, Kawaguchi Masato, Tanaka Masaya, Umehara Noritsugu

    PROCEEDINGS OF SAKURA SYMPOSIUM ON MECHANICAL SCIENCE AND ENGINEERING 2017     page: 39-41   2017

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  249. THE EFFECT OF FIBER MATERIAL ON FRICTIONAL BEHAVIOR OF LOOPED FIBER BRUSH

    Murashima Motoyuki, Kohno Eishun, Umehara Noritsugu, Kitamura Tomoki, Nakao Taichi

    PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON MECHANICS AND MATERIALS IN DESIGN (M2D2017)     page: 1379-1380   2017

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  250. Effect of the substrate bias on tribological behavior of ta-C films at elevated temperatures

    Lee Woo Young, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki, Jang Young Jun, Kim Jong Kuk

    PROCEEDINGS OF SAKURA SYMPOSIUM ON MECHANICAL SCIENCE AND ENGINEERING 2017     page: 29-32   2017

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  251. Effect of temperature and counterpart material on the wear behavior of ta-CNx coating in base-oil

    Liu Xiaoxu, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    PROCEEDINGS OF SAKURA SYMPOSIUM ON MECHANICAL SCIENCE AND ENGINEERING 2017     page: 22-25   2017

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  252. Effect of the substrate bias on tribological behavior of ta-C films at elevated temperatures

    Lee Woo Young, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki, Jang Young Jun, Kim Jong Kuk

    PROCEEDINGS OF SAKURA SYMPOSIUM ON MECHANICAL SCIENCE AND ENGINEERING 2017     page: 29-32   2017

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  253. THE EFFECT OF FIBER MATERIAL ON FRICTIONAL BEHAVIOR OF LOOPED FIBER BRUSH

    Murashima Motoyuki, Kohno Eishun, Umehara Noritsugu, Kitamura Tomoki, Nakao Taichi

    PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON MECHANICS AND MATERIALS IN DESIGN (M2D2017)     page: 1379-1380   2017

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  254. WEAR REDUCTION WITH INNER STRUCTURE MADE BY 3D PRINTER

    Murashima Motoyuki, Kawaguchi Masato, Tanaka Masaya, Umehara Noritsugu, Nemoto Kouki, Okuno Kiichi

    PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON MECHANICS AND MATERIALS IN DESIGN (M2D2017)     page: 1381-1384   2017

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  255. The effect of inner structures created by 3D-additive manufacturing on wear reduction of 3D printed material

    Murashima Motoyuki, Kawaguchi Masato, Tanaka Masaya, Umehara Noritsugu

    PROCEEDINGS OF SAKURA SYMPOSIUM ON MECHANICAL SCIENCE AND ENGINEERING 2017     page: 39-41   2017

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  256. Development of adhesion control method for thermoplastic resin by switching electric bias Reviewed

    Motoyuki MURASHIMA, Noritsugu Umehara, Hiroyuki KOUSAKA

    Proc. 43rd Leeds-Lyon Symposium on Tribology     page: 3   2016.9

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  257. EFFECT OF ELECTRIC FIELD ON ADHESION OF THERMOPLASTIC RESIN AGAINST STEEL PLATE Reviewed

    Murashima Motoyuki, Umehara Noritsugu, Kousaka Hiroyuki, Deng Xingrui

    IRF2016: 5TH INTERNATIONAL CONFERENCE INTEGRITY-RELIABILITY-FAILURE     page: 1273-1280   2016.7

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  258. Effect of Nano-texturing on Adhesion of Thermoplastic Resin against Textured Steel Plate Reviewed

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA

    Tribology Online   Vol. 11 ( 2 ) page: 159-167   2016.4

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  259. Effect of Nano-texturing on Adhesion of Thermoplastic Resin againstTextured Steel Plate Reviewed

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA

    Proc. International Tribology Conference, Tokyo     page: 19aE-02   2015.9

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  260. EFFECT OF ALTERNATING ELECTRIC FIELD INTENSITY ON ADHESION OF THERMOPLASTIC RESIN Reviewed

    Murashima Motoyuki, Umehara Noritsugu, Kousaka Hiroyuki

    M2D2015: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON MECHANICS AND MATERIALS IN DESIGN     page: 335-338   2015.7

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  261. DEVELOPMENT OF ADHESION CONTROL METHOD FOR THERMOPLASTIC RESIN WITH AC ELECTRIC FIELD Reviewed

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA

    Proc. The 6th International Conference on Manufacturing, Machine Design and Tribology     page: FR-B-1-1   2015.4

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  262. Proposal for Evaluation Method on Aesthetic Surface of CFRP by Using Ellipsometer Reviewed

    Takayuki Kawasaki, Motoyuki MURASHIMA, Noritsugu Umehara and Hiroyuki Kousaka

    Proc. The 6th International Conference on Manufacturing, Machine Design and Tribology     page: TH-E-3-1   2015.4

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  263. Effect of metal surface temperature on adhesion between thermoplastic resin and metal surface Reviewed

    MURASHIMA Motoyuki, UMEHARA Noritsugu, KOUSAKA Hiroyuki, TOKOROYAMA Takayuki

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A   Vol. 81 ( 822 ) page: .   2015.2

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    This paper clarified the effect of mold temperature affecting adhesion of thermoplastic resins which will be used in Carbon-Fiber-Reinforced Thermo-Plastic (Thermoplastic CFRP). CFRP which has high mechanical strength and lightness attracts considerable attention because of its possibility improving fuel economy. Many vehicle companies are developing new press molding method using Thermoplastic CFRP for achieving high productivity compared to Thermosetting CFRP which is used conventionally. One of the most important factors during press molding is mold temperature which affects adhesion between thermoplastic resins and mold surface. It is important to estimate the adhesion because strong adhesion causes long cycle time and poor surface quality. Adhesion tests were carried out at several mold temperature. Maximum adhesion strength of amorphous resins which consisted of Acrylic resin, Polycarbonate and Polyvinyl chloride were gotten around 126 degree Celsius, 163 degree Celsius and 82 degree Celsius, respectively. Maximum adhesion strength of crystalline resins which consisted of Polyamide 6, Polyamide 66 and Polypropylene were observed around 210 degree Celsius, 236 degree Celsius and 167 degree Celsius, respectively. We clarified amorphous and crystalline thermoplastic resins showed maximum adhesion strength around glassy transition temperature and melting point from the result organized by temperature index which is calculated from dividing mold temperature by glassy transition temperature and melting point, respectively.

    CiNii Article

  264. The Effect of Glassy-transition temperature and Melting point affecting Adhesion of thermoplastic resin Reviewed

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA, Takayuki TOKOROYAMA

    Proc. 5th JSME/ASME 2014 International Conference on Materials and Processing     page: 5039   2014.6

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    Authorship:Lead author   Language:English  

  265. Influence of carbon black in engine oil on wear of H-free diamond-like carbon coatings Reviewed

    Yutaka MABUCHI, Tsuyoshi HIGUCHI, Daisuke YOSHIMURA, Motoyuki MURASHIMA, Hiroyuki KOUSAKA, Noritsugu UMEHARA

    Tribology International   Vol. 73   page: 138-147   2014.1

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    Language:English   Publishing type:Research paper (scientific journal)  

  266. The development of adhesion reduction method for thermoplastic CFRP and mould Reviewed

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA, Takayuki TOKOROYAMA

    Proc. 5th World Tribology congress     page: 317   2013.9

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    Authorship:Lead author   Language:English  

  267. Temperature effect on thermo-plastic adhesion to metal mould Reviewed

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA, Takayuki TOKOROYAMA

    Proc. The 5th International Conference on Manufacturing, Machine Design and Tribology     page: C4-03   2013.5

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    Authorship:Lead author   Language:English  

  268. First-principles study of mechanical properties of one-dimensional carbon nanotube intramolecular junctions Reviewed

    Kinoshita Yusuke, Murashima Motoyuki, Kawachi Masaki, Ohno Nobutada

    COMPUTATIONAL MATERIALS SCIENCE   Vol. 70   page: 1-7   2013.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.commatsci.2012.12.033

    Web of Science

  269. Mechanical Properties of Carbon Nanotubes with One-Dimensional Intramolecular Junction Reviewed

    KINOSHITA Yusuke, MURASHIMA Motoyuki, KAWACHI Masaki, OHNO Nobutada

    journal of the Japan Society for Testing Materials   Vol. 61 ( 2 ) page: 149-154   2012.2

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    Mechanical properties of single-walled carbon nanotubes with one-dimensional intramolecular junctions (CNT-IMJs) are investigated using first-principles density functional theory calculations. The influence of Stone-Wales (SW) defects (a pair of five- and seven-membered rings) at a junction on the Young's modulus, tensile strength and breaking strain of the CNT-IMJs are discussed from the charge density and interatomic distance. Our calculations reveal that deformation concentration on a seven-membered ring causes the decrease in the strength and elongation of the CNT-IMJs. It is found that the tensile strength and breaking strain of the CNT-IMJs depend on the position of SW defects, while the number of SW defects hardly affects them. The applicability of AIREBO classical interatomic potential to simulate tensile deformation in the CNT-IMJs is also discussed.

    CiNii Article

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MISC 7

  1. Multiple Friction Control using Morphing Surface -Smart Surface- Invited Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    Proc. Taiwan-Japan Tribology Symposium 2018     page: 18-19   2018.11

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    Language:English   Publishing type:Research paper, summary (national, other academic conference)  

  2. Development of Morphing Surface made by Additive Manufacturing and Active Friction Control Invited Reviewed

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    Proc. 2nd Korea-Japan Tribology Symposium     page: 19-20   2018.10

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    Language:English   Publishing type:Research paper, summary (national, other academic conference)  

  3. Effect of Surface Energy of Carbonaceous hard Coatings on Friction Coefficient with In-situ Measurement in ESEM Invited Reviewed

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Proc. 2nd Korea-Japan Tribology Symposium     page: 13   2018.10

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    Language:English   Publishing type:Research paper, summary (national, other academic conference)  

  4. Tribological properties of ta-CNx coating sliding against steel and sapphire in unlubricated condition Reviewed

    Xiaoxu Liu, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    Tribology International   Vol. 131   page: 102-111   2018.10

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

  5. The effects of oil additives and mating materials to the friction, wear and seizure characteristics of a-C:H coating

    bin Taib Mohd Taufik, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    JURNAL TRIBOLOGI   Vol. 18   page: 1-19   2018.9

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

  6. Tribological properties of UV irradiated DLC under PAO oil lubrication including ZnDTP, MoDTC and GMO Reviewed

    Mohd Taufik Bin Taib, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima

    Proc. Asia International Conference on Tribology 2018     page: No093   2018.9

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    Language:English   Publishing type:Research paper, summary (national, other academic conference)  

  7. The effects of oil additives and mating materials to the friction, wear and seizure characteristics of a-C:H coating

    bin Taib Mohd Taufik, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    JURNAL TRIBOLOGI   Vol. 18   page: 1-19   2018.9

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Presentations 312

  1. Low Friction Realised by Hydrogen-Ended DLC Surface Through Photocatalyst Effect in Water Lubricated Condition International conference

    Motoyuki Murashima, Yusuke Imaizumi, Takazumi Yamada, Katsuno Shotaro, Tomoki Yoshida, Noritsugu Umehara, Takayuki Tokoroyama

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  2. Development of Friction Stabilization Control Using Genetic Algorithm and Contact Point Control Method International conference

    Takazumi Yamada, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  3. Low Friction Realised by Hydrogen-Ended DLC Surface Through Photocatalyst Effect in Water Lubricated Condition International conference

    Motoyuki Murashima, Yusuke Imaizumi, Takazumi Yamada, Katsuno Shotaro, Tomoki Yoshida, Noritsugu Umehara, Takayuki Tokoroyama

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  4. Development of Friction Stabilization Control Using Genetic Algorithm and Contact Point Control Method International conference

    Takazumi Yamada, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  5. Effect of nitrogen contained in ta-CNx on friction characteristics in high vacuum environmen International conference

    Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama, Wooyoung Lee

    NU-KIMS symposium  2020.12.21 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  6. Effect of nitrogen contained in ta-CNx on friction characteristics in high vacuum environmen International conference

    Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama, Wooyoung Lee

    NU-KIMS symposium  2020.12.21 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  7. Proposal of a friction estimation model for DLC coating with deep learning International conference

    Takazumi Yamada, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama, Wooyoung Lee

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  8. Development of DLC coating surface reforming technology using dielectric barrier discharge International conference

    Tomohiro Saso, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama, Wooyoung Lee

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  9. Proposal of a friction estimation model for DLC coating with deep learning International conference

    Takazumi Yamada, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama, Wooyoung Lee

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  10. Development of DLC coating surface reforming technology using dielectric barrier discharge International conference

    Tomohiro Saso, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama, Wooyoung Lee

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  11. Enhancing the Lifetime of MoS2 Coating with the Friction Control Method International conference

    Takazumi Yamada, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  12. Development of DLC Coating Surface Reforming Technology Using Dielectric Barrier Discharge International conference

    Tomohiro Saso,Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama, Wooyoung Lee

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  13. Enhancing the Lifetime of MoS2 Coating with the Friction Control Method International conference

    Takazumi Yamada, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  14. Development of DLC Coating Surface Reforming Technology Using Dielectric Barrier Discharge International conference

    Tomohiro Saso,Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama, Wooyoung Lee

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  15. Development of the active friction control system under poor lubricating conditions with a thin morphing surface

    2020.11.13 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  16. Development of the active friction control system under poor lubricating conditions with a thin morphing surface

    2020.11.13 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  17. ベース油中CNx の摩擦界面その場反射分光分析観察による 摩擦メカニズムの解明

    岡本竜也,梅原徳次,村島基之,斎藤浩二,眞鍋和幹,林圭二

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  18. 深層学習を用いた炭素系硬質膜の摩擦推定モデルの提案

    山田高澄,村島基之,梅原徳次,野老山貴行,李義永

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  19. ベース油中CNx の摩擦界面その場反射分光分析観察による 摩擦メカニズムの解明

    岡本竜也,梅原徳次,村島基之,斎藤浩二,眞鍋和幹,林圭二

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  20. 深層学習を用いた炭素系硬質膜の摩擦推定モデルの提案

    山田高澄,村島基之,梅原徳次,野老山貴行,李義永

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  21. The Influence of Defects in ta-C Coating Deposited by FCVA Method on Their Tribological Behavior International conference

    Woo-Young Lee , Young-Jun Jang , Takayuki Tokoroyama , Motoyuki Murashima , Noritsugu Umehara

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  22. The Proposal of Two Different-Sized Abrasives to Shorten Polishing-Process-Time and Reduce Manufacturing Cost International conference

    Takayuki Tokoroyama, Hiroaki Takeno, Noritsugu Umehara, Motoyuki Murashima, Shogo Chiba

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  23. Tribological Properties Between a-C:H Coatings and SiO 2 at High Temperature International conference

    Noritsugu Umehara, Kota Konishi, Motoyuki Murashima, Takayuki Tokoroyama

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  24. The Influence of Defects in ta-C Coating Deposited by FCVA Method on Their Tribological Behavior International conference

    Woo-Young Lee , Young-Jun Jang , Takayuki Tokoroyama , Motoyuki Murashima , Noritsugu Umehara

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  25. The Proposal of Two Different-Sized Abrasives to Shorten Polishing-Process-Time and Reduce Manufacturing Cost International conference

    Takayuki Tokoroyama, Hiroaki Takeno, Noritsugu Umehara, Motoyuki Murashima, Shogo Chiba

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  26. Tribological Properties Between a-C:H Coatings and SiO 2 at High Temperature International conference

    Noritsugu Umehara, Kota Konishi, Motoyuki Murashima, Takayuki Tokoroyama

    ASME. LEMP2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing  2021.1.15 

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    Event date: 2021.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  27. Clarification of low friction mechanism between a-C:H coatings and oxidized SiC at high temperature International conference

    Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Wooyoung Lee

    NU-KIMS symposium  2020.12.21 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  28. Effect of nitrogen contained in ta-CNx on friction characteristics in high vacuum environmen International conference

    Wooyoung Lee, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    NU-KIMS symposium  2020.12.21 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  29. Wear acceleration of a-C:H coating by Mo-derived particles under 80℃ International conference

    Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Wooyoung Lee

    NU-KIMS symposium  2020.12.21 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  30. Clarification of low friction mechanism between a-C:H coatings and oxidized SiC at high temperature International conference

    Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Wooyoung Lee

    NU-KIMS symposium  2020.12.21 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  31. Effect of nitrogen contained in ta-CNx on friction characteristics in high vacuum environmen International conference

    Wooyoung Lee, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    NU-KIMS symposium  2020.12.21 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  32. Wear acceleration of a-C:H coating by Mo-derived particles under 80℃ International conference

    Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Wooyoung Lee

    NU-KIMS symposium  2020.12.21 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  33. The tribological property of a-C:H coating under lubrication with additives having phosphate and hydroxy group International conference

    Takumi Kani, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Wooyoung Lee, Kazuhiro Yagishita

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  34. Evaluation of the effect of tribofilm derived from MoDTC additives in base oil on friction reduction mechanism by in-situ reflectance observation of contact point International conference

    Naoya Hashizume, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  35. Effect of ZnDTP and Soot in Lubricant Oil on Wear International conference

    Tomoyasu Watanabe, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Wooyoung Lee, Yujij Fukuike, Takashi Kawata

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  36. Effects of dangling bonds and surface energy on tribological properties of ta-CNx coating in unlubricated and under base oil lubricated condition International conference

    Takaaki Miyachi, Yuya Nakashima, Kenji Ishikawa, Wooyoung Lee, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  37. The tribological property of a-C:H coating under lubrication with additives having phosphate and hydroxy group International conference

    Takumi Kani, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Wooyoung Lee, Kazuhiro Yagishita

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  38. Evaluation of the effect of tribofilm derived from MoDTC additives in base oil on friction reduction mechanism by in-situ reflectance observation of contact point International conference

    Naoya Hashizume, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  39. Effect of ZnDTP and Soot in Lubricant Oil on Wear International conference

    Tomoyasu Watanabe, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Wooyoung Lee, Yujij Fukuike, Takashi Kawata

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  40. Effects of dangling bonds and surface energy on tribological properties of ta-CNx coating in unlubricated and under base oil lubricated condition International conference

    Takaaki Miyachi, Yuya Nakashima, Kenji Ishikawa, Wooyoung Lee, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    The 7th Mechanical Engineering Research Day (MERD'20)  2020.12.16 

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    Event date: 2020.12

    Language:English   Presentation type:Poster presentation  

    Country:Malaysia  

  41. The tribological property of DLC under lubrication with new additive having phosphate and hydroxy group International conference

    Takumi Kani,Takayuki Tokoroyama,Noritsugu Umehara, Motoyuki Murashima, Kazuhiro Yagishita

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  42. In-situ observation of rolling friction sliding part using fluorescent fine particles of multiple sizes International conference

    Naoya Fusetani,Takayuki Tokoroyama, oritsugu Umehara, Motoyuki Murashima

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  43. Effect of mating material on friction property of ta-C film at high temperature in water International conference

    Tatsuya Suzuki,Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Kazuhito Yoshida, Masashi Hosokawa, Takashi Honda, Kyoji Inukai

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  44. Effects of dangling bonds and surface energy on tribological properties of ta-CNx coating in unlubricated condition and under base oil lubrication International conference

    Takaaki Miyachi, Yuuya Nakashima, Wooyoung Lee,Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  45. The In-Situ Observation of Imitation Wear Particles at Rolling Friction Contact Point by Fluorescent Staining Method International conference

    Tomoyasu Watanabe,Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Tetsuya Sato, Takeichi Muramatsu, Yoshihiro Asada

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  46. The tribological property of DLC under lubrication with new additive having phosphate and hydroxy group International conference

    Takumi Kani,Takayuki Tokoroyama,Noritsugu Umehara, Motoyuki Murashima, Kazuhiro Yagishita

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  47. The In-Situ Observation of Imitation Wear Particles at Rolling Friction Contact Point by Fluorescent Staining Method International conference

    Tomoyasu Watanabe,Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Tetsuya Sato, Takeichi Muramatsu, Yoshihiro Asada

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  48. Effects of dangling bonds and surface energy on tribological properties of ta-CNx coating in unlubricated condition and under base oil lubrication International conference

    Takaaki Miyachi, Yuuya Nakashima, Wooyoung Lee,Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  49. In-situ observation of rolling friction sliding part using fluorescent fine particles of multiple sizes International conference

    Naoya Fusetani,Takayuki Tokoroyama, oritsugu Umehara, Motoyuki Murashima

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  50. Effect of mating material on friction property of ta-C film at high temperature in water International conference

    Tatsuya Suzuki,Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Kazuhito Yoshida, Masashi Hosokawa, Takashi Honda, Kyoji Inukai

    2nd Korea-Tribology International Symposium  2020.11.29 

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    Event date: 2020.11 - 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  51. 次世代教育・高校2 年生のオープンキャンパス

    野老山貴行,梅原徳次,村島基之,李義永

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  52. ZnDTP及びすす混入潤滑油の摩耗に及ぼす影響

    渡邉 智康,梅原徳次,村島基之,野老山貴行,李義永,福池裕二,川田尚史

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  53. 地熱発電システムにおけるDLCのシリカ付着低減効果の検討

    宮地孝明,中島悠也,李義永,梅原徳次,野老山貴行,村島基之

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  54. 粒子径の異なる蛍光発光粒子を用いた転がり摩擦しゅう動部その場観察

    布施谷尚也,野老山貴行,梅原徳次,村島基之,李義永

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  55. 高温高圧水中におけるta-C膜の摩擦摩耗特性に及ぼす相手材の影響

    鈴木健矢,梅原徳次,村島基之,野老山貴行,李義永,吉田和仁,細川征嗣,本田祟,犬飼恭司

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  56. 誘電体バリア放電によるDLC 膜表面改質技術の開発

    佐宗朋洋,村島基之,梅原徳次,野老山貴行,李義永

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  57. グリセリン及びリン酸骨格構造を有する新規添加剤によるa-C:H膜の潤滑油中トライボロジー特性

    蟹 拓実,野老山貴行,梅原徳次,村島基之,李義永,八木下和宏

    トライボロジー会議秋2020 別府  2020.11.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  58. 添加剤含有潤滑油を用いた境界潤滑下における金属材料表面に形成されたトライボ 被膜の機械的特性評価

    野老山貴行,西本宇志,村上靖宏,光井秀明,村島基之,李義永,梅原徳次

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  59. 次世代教育・高校2 年生のオープンキャンパス

    野老山貴行,梅原徳次,村島基之,李義永

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  60. 添加剤含有潤滑油を用いた境界潤滑下における金属材料表面に形成されたトライボ 被膜の機械的特性評価

    野老山貴行,西本宇志,村上靖宏,光井秀明,村島基之,李義永,梅原徳次

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  61. グリセリン及びリン酸骨格構造を有する新規添加剤によるa-C:H膜の潤滑油中トライボロジー特性

    蟹 拓実,野老山貴行,梅原徳次,村島基之,李義永,八木下和宏

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  62. ZnDTP及びすす混入潤滑油の摩耗に及ぼす影響

    渡邉 智康,梅原徳次,村島基之,野老山貴行,李義永,福池裕二,川田尚史

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  63. 地熱発電システムにおけるDLCのシリカ付着低減効果の検討

    宮地孝明,中島悠也,李義永,梅原徳次,野老山貴行,村島基之

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  64. 粒子径の異なる蛍光発光粒子を用いた転がり摩擦しゅう動部その場観察

    布施谷尚也,野老山貴行,梅原徳次,村島基之,李義永

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  65. 高温高圧水中におけるta-C膜の摩擦摩耗特性に及ぼす相手材の影響

    鈴木健矢,梅原徳次,村島基之,野老山貴行,李義永,吉田和仁,細川征嗣,本田祟,犬飼恭司

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  66. 誘電体バリア放電によるDLC 膜表面改質技術の開発

    佐宗朋洋,村島基之,梅原徳次,野老山貴行,李義永

    トライボロジー会議秋2020 別府  2020.11.11 

     More details

    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  67. グリセリン及びリン酸骨格構造を有する添加剤によるa-C:H膜の潤滑油中トライボロジー特性

    蟹拓実,野老山貴行,梅原徳次,村島基之,八木下和宏

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  68. PVC含有有機溶媒への交流電場援用マイクロ突起の創製

    山田雄聖,野老山貴行,梅原徳次,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  69. ta-CNx膜のベース油中摩擦における潤滑油温度の摩擦係数,油膜厚さ及び構造変化層の分極率に及ぼす影響

    村瀬良,梅原徳次,野老山貴行,村島基之,李義永

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  70. 高真空環境下におけるta-CNxの摩擦特性に及ぼす窒素含有の影響

    松田陽司,村島基之,梅原徳次,野老山貴行,Wooyoung Lee

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  71. 反射分光摩擦面その場観察装置を用いた二液分離油のしゅう動部油膜内濃度分布その場分析

    前田悠太,梅原徳次,野老山貴行,村島基之,佐藤卓,永田良子,羽生田清志

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  72. 窒素イオンビームFCVA法によるta-CNx膜の膜質と耐摩耗性に及ぼす照射角度の影響

    平田航大,梅原徳次,野老山貴行,村島基之,李 義永

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  73. 反射分光摩擦面その場観察装置によるMoDTC含有潤滑油下におけるトライボフィルムの分析と摩擦に及ぼす影響の解明

    橋詰直弥,梅原徳次,野老山貴行,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  74. 油潤滑下における高粘度微小油滴の誘電泳動による低摩擦潤滑技術の開発

    青野和馬,村島基之,梅原徳次,野老山貴行

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  75. 模擬摩耗粒子を用いた蛍光染色法による転がり摩擦しゅう動部その場観察

    渡邉智康,梅原徳次,野老山貴行,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  76. 無潤滑下及びベース油中におけるta-Cコーティングのトライボロジー特性に及ぼすダングリングボンドと表面エネルギ―の影響

    宮地孝明,中島悠也,石川健治,Wooyoung Lee,梅原徳次,野老山貴行,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  77. 材料の異なる蛍光発光粒子を用いた転がり摩擦しゅう動部その場観察

    布施谷尚也,野老山貴行,梅原徳次,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  78. 高温高圧水中下におけるta-C膜の摩擦特性に及ぼす相手材の影響

    鈴木健矢,梅原徳次,野老山貴行,村島基之,吉田和仁,細川征嗣,本田崇,犬養恭司

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  79. ゴムと金属の油中すべり出し摩擦特性に及ぼす金属側表面粗さの影響

    佐宗朋洋,村島基之,梅原徳次,野老山貴行,淵尚一郎,兼崎亮太,沖舘亮

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  80. グリセリン及びリン酸骨格構造を有する添加剤によるa-C:H膜の潤滑油中トライボロジー特性

    蟹拓実,野老山貴行,梅原徳次,村島基之,八木下和宏

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  81. PVC含有有機溶媒への交流電場援用マイクロ突起の創製

    山田雄聖,野老山貴行,梅原徳次,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  82. ta-CNx膜のベース油中摩擦における潤滑油温度の摩擦係数,油膜厚さ及び構造変化層の分極率に及ぼす影響

    村瀬良,梅原徳次,野老山貴行,村島基之,李義永

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  83. 高真空環境下におけるta-CNxの摩擦特性に及ぼす窒素含有の影響

    松田陽司,村島基之,梅原徳次,野老山貴行,Wooyoung Lee

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  84. 反射分光摩擦面その場観察装置を用いた二液分離油のしゅう動部油膜内濃度分布その場分析

    前田悠太,梅原徳次,野老山貴行,村島基之,佐藤卓,永田良子,羽生田清志

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  85. 窒素イオンビームFCVA法によるta-CNx膜の膜質と耐摩耗性に及ぼす照射角度の影響

    平田航大,梅原徳次,野老山貴行,村島基之,李 義永

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  86. 反射分光摩擦面その場観察装置によるMoDTC含有潤滑油下におけるトライボフィルムの分析と摩擦に及ぼす影響の解明

    橋詰直弥,梅原徳次,野老山貴行,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  87. 油潤滑下における高粘度微小油滴の誘電泳動による低摩擦潤滑技術の開発

    青野和馬,村島基之,梅原徳次,野老山貴行

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  88. 模擬摩耗粒子を用いた蛍光染色法による転がり摩擦しゅう動部その場観察

    渡邉智康,梅原徳次,野老山貴行,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  89. 無潤滑下及びベース油中におけるta-Cコーティングのトライボロジー特性に及ぼすダングリングボンドと表面エネルギ―の影響

    宮地孝明,中島悠也,石川健治,Wooyoung Lee,梅原徳次,野老山貴行,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  90. 材料の異なる蛍光発光粒子を用いた転がり摩擦しゅう動部その場観察

    布施谷尚也,野老山貴行,梅原徳次,村島基之

    日本機械学会年次大会2020 名古屋  2020.9.14 

     More details

    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  91. 高温高圧水中下におけるta-C膜の摩擦特性に及ぼす相手材の影響

    鈴木健矢,梅原徳次,野老山貴行,村島基之,吉田和仁,細川征嗣,本田崇,犬養恭司

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  92. ゴムと金属の油中すべり出し摩擦特性に及ぼす金属側表面粗さの影響

    佐宗朋洋,村島基之,梅原徳次,野老山貴行,淵尚一郎,兼崎亮太,沖舘亮

    日本機械学会年次大会2020 名古屋  2020.9.14 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  93. 蛍光染色法を用いた砥粒の研磨面内その場観察

    野老山貴行,嶽野広明,梅原徳次,村島基之,千葉翔悟

    2020年度砥粒加工学会学術講演会  2020.9.10 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  94. 蛍光染色法を用いた砥粒の研磨面内その場観察

    野老山貴行,嶽野広明,梅原徳次,村島基之,千葉翔悟

    2020年度砥粒加工学会学術講演会  2020.9.10 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  95. 熱可塑性CFRP成形条件が表面光学特性に及ぼす影響の解明

    村島基之,川崎貴之,室岡貴晴,梅原徳次,上坂裕之

    日本機械学会東海支部第69期講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  96. MoDTC由来物質を混合した境界潤滑下におけるa-C:H膜の摩耗特性 Invited

    野老山貴行,K.A.M. Kassim,梅原徳次,村島基之

    第60回“超”を目指す軸受技術研究会 

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    Event date: 2019.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  97. タンタル元素結合状態が ta-CNx 膜の摩擦特性に及ぼす影響

    北條孝樹,梅原徳次,野老山貴行,村島基之

    第10回トライボロジー秋の学校in愛知 

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    Event date: 2019.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  98. 模擬摩耗粒子を用いた転がり摩擦しゅう動部その場観察

    布施谷尚也,梅原徳次,野老山貴行,村島基之

    第10回トライボロジー秋の学校in愛知 

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    Event date: 2019.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  99. 高温高圧摩擦試験機の開発と高効率化

    鈴木健矢,梅原徳次,野老山貴行,村島基之

    第10回トライボロジー秋の学校in愛知 

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    Event date: 2019.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  100. Effect of Multiple Damages on AI Learning to Realize Stable Friction with Active Morphing Surface -Smart Surface-

    Motoyuki Murashima, Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  101. Development of control method for friction stabilization

    Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  102. Development of new active friction control system with morphing surface (Smart Surface) in poor lubrication oil

    Yusuke Imaizumi, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama,

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  103. Improvement of wear resistance of CNx coating overcoat on a-C:H coating in oil lubrication

    Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Manabu Izumida, Naohisa Kawakami

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  104. Effect of Mesh and Pillar structure of tetrahedral amorphous carbon (ta-C) on the coatings' fracture toughness

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi, Hideki Moriguchi,

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  105. Effects of Oil Additives, Sliding Speed and Mating Materials to Friction and Wear Characteristics of a-C:H Coating

    Mohd Taufik Bin Taib, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  106. Investigating Defects on Wear Behavior in ta-C Coating with Prepared by Filtered Cathodic Vacuum Arc Deposition

    Woo-Young Lee, Young-Jun Jang, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  107. Development of Long Life Polymer Coated Tip for Electrosurgical Knife

    Masahiro Kobayashi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  108. Elucidation of Wear Mechanism of DLC Film under High Oxidizing Environment and Study on Wear Reduction Method

    Masashi Hosokawa, Yoji Ito, Makoto Takeuchi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama,

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  109. The Tribological Behavior of DLC Coatings Induced by B/Cr Co-Doping and Clarification of Their Mechanism

    Ruixi Zhang, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Yuji Takimoto,

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  110. Improvement of polishing efficiency and reduction of damage depth in One process using low hard abrasives and hard abrasives

    Hiroaki Takeno, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Shogo Chiba,

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  111. Effect of hardness of mold surface on residual of alumina particles on mold surface

    Koki Hojo, Shigehiro Ito, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama, Kei Sugiura, Tomonori Takahashi,

    International Tribology Conference Sendai 2019 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  112. Active Control of Hydrodynamic Lubrication Condition by Morphing Surface Created by 3D Printer Invited

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara, Takayuki Tokoroyama

    Japan-Taiwan Tribology Symposium 2019, 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  113. グリセリン及びリン酸骨格構造を有する GDOP 添加剤によるa-C:H 膜の潤滑油中トライボロジー特性

    野老山貴行,呉時駿,梅原徳次,村島基之,八木下和宏

    日本機械学会年次大会2019秋田大学 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  114. 硬さの異なる2種類の砥粒を用いた粗加工・仕上げ加工同時研磨方法の提案

    嶽野広明,野老山貴行,梅原徳次,村島基之,千葉翔悟

    日本機械学会年次大会2019秋田大学 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  115. LFM/AFM を用いたアルミナ圧縮粉体の金型への付着メカニズムの解明

    北條孝樹,伊藤茂裕,梅原徳次,野老山貴行,村島基之,杉浦慧,高橋知典

    日本機械学会年次大会2019秋田大学 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  116. コーティング電気メス電極の炭化物付着抑制手法の開発

    小林将大,野老山貴行,梅原徳次, 村島基之

    日本機械学会年次大会2019秋田大学 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  117. CONCEPT FOR LOW FRICTION HYDROGEN END DLC SURFACE GENERATED BY PHOTOCATALYST REACTION International conference

    Motoyuki Murashima, Yusuke Imaizumi, Takazumi Yamada, Katsuno Shotaro, Tomoki Yoshida, Noritsugu Umehara, Takayuki Tokoroyama

    8th International Conference Mechanics and Materials in Design 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Portugal  

  118. EFFECT OF FRACTURE TOUGHNESS ON THE WEAR BEHAVIOUR OF TETRAHEDRAL AMORPHOUS CARBON (ta-C) COATING International conference

    Mohd Muhyiddin Bin Mustafa , Noritsugu Umehara , Takayuki Tokoroyama , Motoyuki Murashima , Akinori Shibata , Yoshiharu Utsumi , Hideki Moriguchi,

    8th International Conference Mechanics and materials in desing 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Italy  

  119. THE WEAR EFFECT OF MOLYBDENUM-DERIVED PARTICLES ON HYDROGENATED DIAMOND-LIKE CARBON AT HIGH TEMPERATURE International conference

    Khairul Amzar Mohd Kassim, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    8th International Conference Mechanics and materials in desing 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Italy  

  120. TRIBOLOGICAL PROPERTIES BETWEEN a-C:H COATINGS AND SiO2 AT HIGH TEMPERATURE International conference

    Kota Konishi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama,

    8th International Conference Mechanics and materials in desing 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Italy  

  121. 低硬質砥粒と高硬質砥粒を同時に用いた複合同時研磨時の研磨面観察

    嶽野広明,野老山貴行,梅原徳次,村島基之,千葉翔悟

    2019年度砥粒加工学会学術講演会 

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    Event date: 2019.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  122. Effect of Carbonaceous Hard Coatings Overcoat on Friction and Wear Properties for Al Alloy Sliding Bearing in Oil Lubrication International conference

    N. Umehara, T. Kitamura, S. Ito, T. Tokoroyama, M. Murashima, M. Izumida and N. Kawakami,

    The 15th IFToMM World Congress 

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    Event date: 2019.6 - 2019.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Poland  

  123. Effect of defects on tribological behavior in ta-C coating deposited by Filtered Cathodic Vacuum Arc technique, International conference

    W-Y. Lee, Y-J. Jang, T. Tokoroyama, M. Murashima and N. Umehara

    The 15th IFToMM World Congress 

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    Event date: 2019.6 - 2019.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Poland  

  124. 熱可塑性樹脂の金属表面に対する付着に及ぼす電場の影響 Invited

    村島基之,梅原徳次,上坂裕之,鄧興瑞

    トライボロジー会議春2019 東京 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  125. Understanding morphology and tribological behavior of ta-C coating deposited by FCVA method

    Woo-Young Lee, Young-Jun Jang, takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara,

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  126. Development of control method for friction stabilization

    Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  127. The tribological properties of DLCs with various dopants and clarification of the mechanism at 200oC

    Ruixi Zhang, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  128. Effect of doped tantalum in ta-CNx film or tantalum as counterpart material on the friction and wear properties of ta-CNx

    Koki Hojo, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  129. Elucidation of interaction in polishing process using low hardness abrasive grains and hard abrasive grains

    Hiroaki Takeno, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Shogo Chiba

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  130. Preventing Coagulated-Blood Adhesion on a Coated Electrosurgical Knife

    Masahiro Kobayashi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  131. Development of new active friction control system with morphing surface (Smart Surface) in dry condition

    Yusuke Imaizumi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima,

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  132. Mechanism of improvement wear resistance about CNx coating overcoat on a-C:H coating in oil lubrication

    Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Manabu Izumida and Naohisa Kawakami,

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  133. Effect of mesh structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition with regard to fracture behavior

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi and Hideki Moriguchi,

    International Conference on Manufacturins, Machine Design and Tribology 2019 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  134. Multiple Friction Control using Morphing Surface -Smart Surface- Invited International conference

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    Taiwan-Japan Tribology Symposium 2018 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Taiwan, Province of China  

  135. Development of Morphing Surface made by Additive Manufacturing and Active Friction Control Invited International conference

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    2nd Korea-Japan Tribology Symposium 

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    Event date: 2018.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Korea, Republic of  

  136. Effect of Surface Energy of Carbonaceous hard Coatings on Friction Coefficient with In-situ Measurement in ESEM Invited International conference

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    2nd Korea-Japan Tribology Symposium 

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    Event date: 2018.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Korea, Republic of  

  137. The effect of atmosphere gas on surface energy of carbonaceous hard coatings wear track by in-situ measurement in ESEM International conference

    Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  138. Effect of inner structure made by 3D printer on wear and friction International conference

    Motoyuki Murashima, Masato Kawaguchi, Shouta Yoshino, Noritsugu Umehara

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  139. Investigating run-in behavior of ta-C friction and understating wear behavior at high temperature International conference

    Woo-Young Lee, Takayuki Tokoroyama, Motoyuki Murashima, Young-Jun Jang, Jong-Kuk Kim, Noritsugu Umehara

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  140. Effect of structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition International conference

    Mohd Muhyiddin Bin Mustafa, Noritusug Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Hideki Moriguch

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  141. Noble method of surface energy estimation for local friction area with in-situ friction tester in ESEM International conference

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  142. Tribological properties of UV irradiated DLC under PAO oil lubrication including ZnDTP, MoDTC and GMO International conference

    Mohd Taufik Bin Taib, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  143. Wear properties of a-C:H and Si-DLC in pressurized high-temperature water International conference

    Makoto Takeuchi, Kiichi. Okuno, Noritsugu Umehara, Motoyuki Murashima

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  144. The clarification of low friction mechanism in oil lubrication for B-DLC coating by in-situ observation of friction area International conference

    Tatsuya Okamoto, Noritsugu Umehara, Motoyuki Murashima, Koji Saito, Kazukoshi Manabe, Keiji Hayashi

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  145. The effect of molybdenum carbide (Mo2C) particles on wear properties of diamond-like carbon under boundary lubrication International conference

    Khairul Amzar Mohd Bin Kassim, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Asia International Conference on Tribology 2018 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Malaysia  

  146. 二液分離油の反射分光摩擦面その場観察装置を用いたしゅう動部油膜その場分析

    山田高澄,梅原徳次,野老山貴行,村島基之,佐藤卓, 大原健司, 羽生田清志

    日本機械学会年次大会2018 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  147. カーボンファイバーブラシを用いたDLC膜研磨手法の開発に向けた基礎検討

    今泉友佑,村島基之,野老山貴行,梅原徳次

    日本機械学会年次大会2018 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  148. EFFECT OF SURFACE ENERGY ON FRICTION COEFFICIENT OF CARBONACEOUS HARD COATINGS BY IN-SITU MEASUREMENT IN ESEM International conference

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    6th International Conference on Integrity-Reliability-Failure 

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    Event date: 2018.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Portugal  

  149. PROPOSAL OF DEVELOPMENT GUIDLINE FOR LOW FRICTIONAL MATERIAL IN OIL LUBRICATION WITH HIGH PERMITTIVITY MATERIAL International conference

    Motoyuki Murashima, See-Jun Oh, Takaaki Miyachi, Noritsugu Umehara, Takayuki Tokoroyama, Kota Konishi, Tatsuya Okamoto

    6th International Conference on Integrity-Reliability-Failure 

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    Event date: 2018.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Portugal  

  150. 変形する表面(スマートサーフェス)を用いた摩擦の能動的制御

    村島基之

    未来技術ワークショップ 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  151. 種々の炭素系硬質膜を成膜したアルミ合金軸受の油中摩擦摩耗特性

    北村友規,梅原徳次,野老山貴行,村島基之,泉田学,川上直久

    トライボロジー会議2018春 東京 

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    Event date: 2018.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  152. 3Dプリンタにより造形された変形表面による流体潤滑状態の能動的制御

    村島基之,川口眞人,梅原徳次,野老山貴行

    トライボロジー会議2018春 東京 

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    Event date: 2018.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  153. ループ型カーボンファイバーブラシの水潤滑における摩擦特性の解明

    竹内惇,村島基之,梅原徳次,野老山貴行

    日本機械学会第18回機素潤滑設計部門講演会 

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    Event date: 2018.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  154. 形状変形表面(スマートサーフェス)を用いた摩擦の多段階能動的制御

    村島基之,川口眞人,梅原徳次,野老山貴行

    日本機械学会第18回機素潤滑設計部門講演会 

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    Event date: 2018.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  155. ベース油中B-DLC膜の摩擦部その場観察による超低摩擦メカニズムの解明

    岡本竜也,西村英典,梅原徳次,村島基之,野老山貴行

    日本機械学会第18回機素潤滑設計部門講演会 

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    Event date: 2018.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  156. ESEMその場観察によるCNx膜摩耗痕の表面エネルギー変化に及ぼす雰囲気ガスの影響の解明

    寺田真,梅原徳次,村島基之,野老山貴行

    日本機械学会第18回機素潤滑設計部門講演会 

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    Event date: 2018.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  157. カーボン系硬質膜におけるESEM内その場評価法による摩擦特性に及ぼす表面エネルギーの影響の解明

    中尾太一,梅原徳次,村島基之,寺田真

    日本機械学会第18回機素潤滑設計部門講演会 

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    Event date: 2018.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  158. 材料変形を利用した能動的・受動的摩擦制御手法の開発 Invited

    村島基之

    東海トライボロジー第104回研究会 

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    Event date: 2018.1

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  159. 繰り返し押込み荷重による 繰り返し押込み荷重による 繰り返し押込み荷重による 繰り返し押込み荷重による ta -C膜の変形挙動解析 膜

    DeLaTorre Oscar,梅原徳次,野老山貴行,村島基之

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  160. マイクロ波励起・高密度・基材近傍プラズマによる浸炭技術の開発

    野田啓一郎,上坂裕之,梅原徳次,村島基之,野老山貴行

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  161. T-FAD法によるta-C:B膜の成膜及びその高温トライボロジー特性

    根本公紀,梅原徳次,瀧本裕治,中道健司,野老山貴行,村島基之

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  162. ベース油中CNx膜の摩擦部その場観察による超低摩擦メカニズムの解明

    岡本竜也,梅原徳次,村島基之,斉藤浩二,眞鍋和幹,林圭二

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  163. 長繊維熱可塑性CFRPにおける表面粗さ生成モデルの提案

    室岡貴晴,村島基之,梅原徳次,野老山貴行

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  164. 油中におけるDLC膜の摩擦摩耗に及ぼす相手酸化膜の影響

    澤木俊哉,梅原徳次,野老山貴行,村島基之

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  165. a-C:H膜の摩耗を促進するMoDTC由来相手炭素鋼上トライボフィルムの分析

    亀田衣麻莉,大原健司,川村靖,羽生田清志,梅原徳次,野老山貴行,村島基之

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  166. 高温高圧高酸素水中におけるSi-DLC膜の耐摩耗メカニズムの解明

    村島基之,奥野貴一,竹内惇,梅原徳次,吉田和仁,稲吉成彦,佐々木啓次

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  167. 100μmスケールの細穴内面に対する炭素系薄膜のガス流支援プラズマCVD

    大田梨仁,上坂裕之,梅原徳次,野老山貴行,村島基之

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  168. DLC膜とSiO2の大気中高温下における低摩擦メカニズムの検討

    古西航大,梅原徳次,野老山貴行,村島基之

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  169. 3Dプリンタを用いた変形表面の創製と能動的摩擦制御手法の開発-スマートサーフェスへの挑戦-

    村島基之,吉野笙太,梅原徳次

    トライボロジー会議秋 高松 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  170. 高温高圧高酸素水中におけるSi-DLC 膜の耐摩耗特性の解明

    村島基之,奥野貴一,梅原徳次,吉田和仁,稲吉成彦,佐々木啓次

    第58回高圧討論会 

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  171. 直径100 μm の細穴内面に対する炭素系薄膜のガス流支援プラズマCVD

    大田梨仁,上坂裕之,Laxminarayan L. Raja,梅原徳次,野老山貴行,村島基之

    第5回応用物理学会名古屋大学スチューデントチャプター東海地区学術講演会 

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    Event date: 2017.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  172. Effect of Loop size of Looped Carbon Fiber Blush on Friction Coefficient International conference

    Motoyuki Murashima, Eishun Kohno, Noritsugu Umehara, Tomoki Kitamura, Taichi Nakao and Toshiya Sawaki

    The 6th World Tribology Congress 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  173. Novel properties with complex structure created by 3D Printer Invited International conference

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  174. ループ型カーボンファイバーブラシによる低起動トルク軸受の高負荷容量化

    後藤康明,梅原徳次,村島基之,上坂裕之

    日本機械学会年次大会 埼玉 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  175. THE EFFECT OF FIBER MATERIAL ON FRICTIONAL BEHAVIOR OF LOOPED FIBER BRUSH International conference

    Motoyuki Murashima, Eishun Kohno, Noritsugu Umehara, Tomoki Kitamura, Taichi Nakao and Toshiya Sawaki

    7th International Conference on Mechanics and Materials in Design 

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    Event date: 2017.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Albufeira, Portugal   Country:Portugal  

  176. WEAR REDUCTION WITH INNER STRUCTURE MADE BY 3D PRINTER International conference

    Motoyuki Murashima, Masato Kawaguchi, Masaya Tanaka, Noritsugu Umehara, Kouki Nemoto, Kiichi Okuno and Kota Konishi

    7th International Conference on Mechanics and Materials in Design 

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    Event date: 2017.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Albufeira, Portugal   Country:Portugal  

  177. The influence of Mo tribofilms on counterpart steel ball for friction and wear of a-C:H coated disc in boundary oil lubrication

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    Event date: 2017.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  178. Development of Friction Reduction Method on Looped Fiber Brush with Spring steel

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    Event date: 2017.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  179. Si含有DLC - 樹脂間の摩擦特性に及ぼすしゅう動中プラズマ照射の影響

    奥村俊介,上坂裕之,梅原徳次,村島基之

    トライボロジー会議春 

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    Event date: 2017.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京   Country:Japan  

  180. Proposal for a Method Improving the Surface Roughness of Thermoplastic CFRP International conference

    Takaharu Murooka, Noritsugu Umehara and Motoyuki Murashima

    The 7th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2017.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea   Country:Korea, Republic of  

  181. The Influence of Mo Tribofilms on Counterpart Steel Ball for Friction and Wear of a-C:H Coated Disc in Base Oil Containing MoDTC International conference

    Imari Kameda, Kenji Ohara, Kiyoshi Hanyuda, Yasushi Kawamura, Noritsugu Umehara and Motoyuki Murashima

    The 7th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2017.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea   Country:Korea, Republic of  

  182. Wear behavior of tetrahedral amorphous carbon nitride under poly alpha-olefin (PAO) lubrication International conference

    Xiaoxu Liu, Ryo Yamaguchi, Noritsugu Umehara and Motoyuki Murashima

    The 7th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2017.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea   Country:Korea, Republic of  

  183. Development of Simple Bearing Friction Tester for Evaluation ofUltra Low friction, Seizure Resistance and Wear Resistance of Carbonaceous Hard Coatings International conference

    Tomoki Kitamura, Noritsugu Umehara, Motuyuki Murashima, Manabu Izumida, Satoshi Takayanagi and Yoshiaki Sato

    The 7th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2017.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea   Country:Korea, Republic of  

  184. Tribological behavior of ta-C:B coatings deposited by Filtered Arc Deposition under sliding at elevated temperature International conference

    Kouki Nemoto, Yuji Takimoto, Noritsugu Umehara and Motoyuki Murashima,

    The 7th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2017.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea   Country:Korea, Republic of  

  185. Wear Reduction by Increase of Contact Area with Inner Structure Made by 3D Printer International conference

    Motoyuki Murashima, Masato Kawaguchi, Masaya Tanaka, Noritsugu Umehara, Kouki Nemoto, Kouta Konishi and Kiichi Okuno

    The 7th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2017.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  186. Effect of plasma irradiation on the interface between DLC and plastic International conference

    Shunsuke Okumura, Hiroyuki Kousaka, Noritsugu Umehara and Motoyuki Murasima

    9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and nanomaterials 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  187. Gas blowing from multiple holes for ultra-high-speed and uniform DLC coating with MVP method International conference

    Hiroto Izuoka, Hiroyuki Kousaka, Noritsugu Umehara and Motoyuki Murasima

    9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and nanomaterials 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  188. 熱可塑性炭素繊維強化樹脂(CFRTP)の表面意匠性改善方法の提案

    室岡貴晴,梅原徳次,村島基之

    トライボロジー秋の学校,愛知 

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    Event date: 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:愛知   Country:Japan  

  189. 振子型油性摩擦実験機による炭素系硬質膜の油中摩擦における摩擦速度依存性の評価

    亀田衣麻莉,梅原徳次,村島基之

    トライボロジー秋の学校,愛知 

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    Event date: 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:愛知   Country:Japan  

  190. エンジン軸受におけるカーボン系硬質膜適用による超低摩擦,耐摩耗性,耐焼付性評価に向けた簡便な軸受試験機の開発

    北村友規,梅原徳次,村島基之

    トライボロジー秋の学校,愛知 

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    Event date: 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:愛知   Country:Japan  

  191. 高温環境下におけるDLC膜の摩擦特性に及ぼす移着膜の影響

    根本公紀,梅原徳次,村島基之

    トライボロジー秋の学校,愛知 

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    Event date: 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:愛知   Country:Japan  

  192. 電場印加状態の制御によるアクリル樹脂の付着特性制御手法の開発

    村島基之,梅原徳次,上坂裕之

    機械学会第11回生産加工・工作機械部門講演会 名古屋 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  193. Effect of drill surface texturing on back burr height with solid lubricating sheet in titanium alloy drilling

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  194. 3Dプリンタによって創製された内部構造を有する樹脂材料の押し込み特性

    古西航大,○村島基之,梅原徳次,上坂裕之

    トライボロジー会議秋2016 新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  195. 低相手攻撃性微小放電によるその場摩擦制御法において微小放電が移着膜に及ぼす影響

    大山慎太郎,梅原徳次,上坂裕之,村島基之

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  196. ta-CNx膜の油中高耐摩耗メカニズムの検討

    山口涼,劉暁旭,梅原徳次,上坂裕之,村島基之

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  197. IBA-FAD法により創製されたタンタル含有DLC膜の大気中摩擦摩耗特性の評価

    田上裕也,梅原徳次,上坂裕之,村島基之

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  198. カーボン系硬質膜の油中摩擦における反射分光分析摩擦面その場観察

    西村英典,梅原徳次,上坂裕之、村島基之,眞鍋和幹,林圭二

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  199. 振子型油性摩擦試験機による炭素系硬質膜の油中摩擦における摩擦速度依存性の評価

    亀田衣麻莉,梅原徳次,上坂裕之,村島基之,眞鍋和幹,林圭二

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  200. ガス吹きつけ型・超高速DLC成膜の実用化指針の提案

    出岡寛人,上坂裕之,梅原徳次,村島基之

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  201. DLC-樹脂間の摩擦挙動に及ぼすプラズマ照射の影響

    奥村俊介,上坂裕之,梅原徳次,村島基之

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  202. フェトム秒レーザーにより製作されたナノテクスチャによる湿度制御下における微小粒子の付着抑制

    前田実里,上坂裕之,梅原徳次,村島基之,高橋知典

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  203. ESEM内その場評価法による表面エネルギーの摩擦特性に及ぼす影響の解明

    中尾太一,梅原徳次,上坂裕之,村島基之

    トライボロジー会議秋,新潟 

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    Event date: 2016.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟   Country:Japan  

  204. フェムト秒レーザーによるナノテクスチャを用いたセラミックス粒子の付着抑制

    前田実里,上坂裕之,梅原徳次,鄧興瑞,村島基之,高橋知典

    機械学会年次大会,九州 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州   Country:Japan  

  205. 熱可塑性樹脂の微小穴への侵入特性に関する研究

    室岡貴晴,村島基之

    機械学会年次大会,九州 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州   Country:Japan  

  206. Development of adhesion control method for thermoplastic resin by switching electric bias International conference

    43rd Leeds-Lyon Symposium on Tribology 

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    Event date: 2016.9

    Language:English   Presentation type:Poster presentation  

    Country:United Kingdom  

  207. EFFECT OF ELECTRIC FIELD ON ADHESION OF THERMOPLASTIC RESIN AGAINST STEEL PLATE International conference

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA, Xingrui Deng

    5th International Conference on INTEGRITY - RELIABILITY - FAILURE 

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    Event date: 2016.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Portugal  

  208. 金属表面への電圧印加を用いたアクリル樹脂の付着強度制御手法の開発

    村島基之,梅原徳次,上坂裕之,鄧興瑞

    トライボロジー会議春2016 

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    Event date: 2016.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  209. ループ型カーボンファイバーブラシによる軽量・低起動トルクすべり軸受けの提案

    志鷹拓也,梅原徳次,上坂裕之,村島基之,新田勇,月山陽介

    機素潤滑設計部門講演会,芦原 

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    Event date: 2016.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:芦原,福井   Country:Japan  

  210. Effect of Nano-texturing on Adhesion of Thermoplastic Resin againstTextured Steel Plate International conference

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA

    International Tribology Conference, Tokyo 2015 

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  211. EFFECT OF ALTERNATING ELECTRIC FIELD INTENSITY ON ADHESION OF THERMOPLASTIC RESIN International conference

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA

    6th International Conference on MECHANICS AND MATERIALS IN DESIGN 

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    Event date: 2015.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Portugal  

  212. Proposal for Evaluation Method on Aesthetic Surface of CFRP by Using Ellipsometer International conference

    Takayuki Kawasaki, Motoyuki MURASHIMA, Noritsugu Umehara and Hiroyuki Kousaka

    The 6th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2015.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  213. DEVELOPMENT OF ADHESION CONTROL METHOD FOR THERMOPLASTIC RESIN WITH AC ELECTRIC FIELD International conference

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA

    The 6th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2015.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  214. The Effect of Glassy-Transition temperature and Melting point affecting Adhesion of Thermoplastic Resin International conference

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA, Takayuki TOKOROYAMA

    5th JSME/ASME 2014 International Conference on Materials and Processing 

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    Event date: 2014.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  215. 熱可塑性樹脂と金属間の付着に及ぼすガラス転移温度及び融点の影響

    村島基之,梅原徳次,上坂裕之,野老山貴行

    トライボロジー会議2014春,東京 

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    Event date: 2014.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  216. 電圧印加による熱可塑性樹脂の金型に対する付着力制御手法の開発

    村島基之,梅原徳次,上坂裕之,野老山貴行

    第4回トライボロジー秋の学校 

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    Event date: 2013.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  217. The development of adhesion reduction method for thermoplastic CFRP and mould International conference

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA, Takayuki TOKOROYAMA

    5th World Tribology congress 

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    Event date: 2013.9

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  218. Temperature effect on thermo-plastic adhesion to metal mould International conference

    Motoyuki MURASHIMA, Noritsugu UMEHARA, Hiroyuki KOUSAKA, Takayuki TOKOROYAMA

    The 5th International Conference on Manufacturing, Machine Design and Tribology 

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    Event date: 2013.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  219. カーボンナノチューブ一次元接合体の機械・電気特性に関する第一原理計算

    村島基之,木下祐介,大野信忠

    日本材料学会東海支部第4回学術講演会 

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    Event date: 2010.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  220. 熱可塑性CFRP成形条件が表面光学特性に及ぼす影響の解明 International conference

    村島基之, 川崎貴之, 室岡貴晴, 梅原徳次, 上坂裕之

    日本機械学会東海支部第69期講演会  2020.3.10 

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  221. MoDTC由来物質を混合した境界潤滑下におけるa-C:H膜の摩耗特性 Invited International conference

    野老山貴行, K.A.M. Kassim, 梅原徳次, 村島基之

    第60回“超”を目指す軸受技術研究会  2019.12.14 

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  222. タンタル元素結合状態が ta-CNx 膜の摩擦特性に及ぼす影響 International conference

    北條孝樹, 梅原徳次, 野老山貴行, 村島基之

    第10回トライボロジー秋の学校in愛知  2019.10.10 

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  223. 高温高圧摩擦試験機の開発と高効率化 International conference

    鈴木健矢, 梅原徳次, 野老山貴行, 村島基之

    第10回トライボロジー秋の学校in愛知  2019.10.10 

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  224. 模擬摩耗粒子を用いた転がり摩擦しゅう動部その場観察 International conference

    布施谷尚也, 梅原徳次, 野老山貴行, 村島基之

    第10回トライボロジー秋の学校in愛知  2019.10.10 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  225. Development of control method for friction stabilization International conference

    Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Tribology Conference Sendai 2019  2019.9.17 

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  226. Effect of Mesh and Pillar structure of tetrahedral amorphous carbon (ta-C) on the coatings' fracture toughness International conference

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi, Hideki Moriguchi

    International Tribology Conference Sendai 2019  2019.9.17 

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  227. Effect of hardness of mold surface on residual of alumina particles on mold surface International conference

    Koki Hojo, Shigehiro Ito, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama, Kei Sugiura, Tomonori Takahashi

    International Tribology Conference Sendai 2019  2019.9.17 

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  228. Development of new active friction control system with morphing surface (Smart Surface) in poor lubrication oil International conference

    Yusuke Imaizumi, Motoyuki Murashima, Noritsugu Umehara, Takayuki Tokoroyama

    International Tribology Conference Sendai 2019  2019.9.17 

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  229. Development of Long Life Polymer Coated Tip for Electrosurgical Knife International conference

    Masahiro Kobayashi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Tribology Conference Sendai 2019  2019.9.17 

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  230. Effect of Multiple Damages on AI Learning to Realize Stable Friction with Active Morphing Surface -Smart Surface- International conference

    Motoyuki Murashima, Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama

    International Tribology Conference Sendai 2019  2019.9.17 

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  231. The Tribological Behavior of DLC Coatings Induced by B/Cr Co-Doping and Clarification of Their Mechanism International conference

    Ruixi Zhang, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Yuji Takimoto

    International Tribology Conference Sendai 2019  2019.9.17 

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  232. Investigating Defects on Wear Behavior in ta-C Coating with Prepared by Filtered Cathodic Vacuum Arc Deposition International conference

    Woo-Young Lee, Young-Jun Jang, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    International Tribology Conference Sendai 2019  2019.9.17 

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    Language:English   Presentation type:Oral presentation (general)  

  233. Improvement of wear resistance of CNx coating overcoat on a-C:H coating in oil lubrication International conference

    Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Manabu Izumida, Naohisa Kawakami

    International Tribology Conference Sendai 2019  2019.9.17 

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  234. Improvement of polishing efficiency and reduction of damage depth in One process using low hard abrasives and hard abrasives International conference

    Hiroaki Takeno, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima, Shogo Chiba

    International Tribology Conference Sendai 2019  2019.9.17 

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  235. Elucidation of Wear Mechanism of DLC Film under High Oxidizing Environment and Study on Wear Reduction Method International conference

    Masashi Hosokawa, Yoji Ito, Makoto Takeuchi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama

    International Tribology Conference Sendai 2019  2019.9.17 

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  236. Effects of Oil Additives, Sliding Speed and Mating Materials to Friction and Wear Characteristics of a-C:H Coating International conference

    Mohd Taufik Bin Taib, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Tribology Conference Sendai 2019  2019.9.17 

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  237. Active Control of Hydrodynamic Lubrication Condition by Morphing Surface Created by 3D Printer Invited International conference

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara, Takayuki Tokoroyama

    Japan-Taiwan Tribology Symposium 2019,  2019.9.14 

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  238. LFM/AFM を用いたアルミナ圧縮粉体の金型への付着メカニズムの解明 International conference

    北條孝樹, 伊藤茂裕, 梅原徳次, 野老山貴行, 村島基之, 杉浦慧, 高橋知典

    日本機械学会年次大会2019秋田大学  2019.9.9 

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  239. グリセリン及びリン酸骨格構造を有する GDOP 添加剤によるa-C:H 膜の潤滑油中トライボロジー特性 International conference

    野老山貴行, 呉時駿, 梅原徳次, 村島基之, 八木下和宏

    日本機械学会年次大会2019秋田大学  2019.9.9 

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  240. 硬さの異なる2種類の砥粒を用いた粗加工・仕上げ加工同時研磨方法の提案 International conference

    嶽野広明, 野老山貴行, 梅原徳次, 村島基之, 千葉翔悟

    日本機械学会年次大会2019秋田大学  2019.9.9 

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  241. コーティング電気メス電極の炭化物付着抑制手法の開発 International conference

    小林将大, 野老山貴行, 梅原徳次, 村島基之

    日本機械学会年次大会2019秋田大学  2019.9.9 

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  242. CONCEPT FOR LOW FRICTION HYDROGEN END DLC SURFACE GENERATED BY PHOTOCATALYST REACTION

    Motoyuki Murashima, Yusuke Imaizumi, Takazumi Yamada, Katsuno Shotaro, Tomoki Yoshida, Noritsugu Umehara, Takayuki Tokoroyama

    8th International Conference Mechanics and Materials in Design  2019.9.4 

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  243. EFFECT OF FRACTURE TOUGHNESS ON THE WEAR BEHAVIOUR OF TETRAHEDRAL AMORPHOUS CARBON (ta-C) COATING

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi, Hideki Moriguchi

    8th International Conference Mechanics and materials in desing  2019.9.4 

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  244. THE WEAR EFFECT OF MOLYBDENUM-DERIVED PARTICLES ON HYDROGENATED DIAMOND-LIKE CARBON AT HIGH TEMPERATURE

    Khairul Amzar Mohd Kassim, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    8th International Conference Mechanics and materials in desing  2019.9.4 

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  245. TRIBOLOGICAL PROPERTIES BETWEEN a-C:H COATINGS AND SiO2 AT HIGH TEMPERATURE

    Kota Konishi, Noritsugu Umehara, Motoyuki Murashima, Takayuki Tokoroyama

    8th International Conference Mechanics and materials in desing  2019.9.4 

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  246. 低硬質砥粒と高硬質砥粒を同時に用いた複合同時研磨時の研磨面観察 International conference

    嶽野広明, 野老山貴行, 梅原徳次, 村島基之, 千葉翔悟

    2019年度砥粒加工学会学術講演会  2019.8.28 

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  247. Effect of Carbonaceous Hard Coatings Overcoat on Friction and Wear Properties for Al Alloy Sliding Bearing in Oil Lubrication

    N. Umehara, T. Kitamura, S. Ito, T. Tokoroyama, M. Murashima, M. Izumida, N. Kawakami

    The 15th IFToMM World Congress  2019.6.30 

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  248. Effect of defects on tribological behavior in ta-C coating deposited by Filtered Cathodic Vacuum Arc technique,

    W-Y. Lee, Y-J. Jang, T. Tokoroyama, M. Murashima, N. Umehara

    The 15th IFToMM World Congress  2019.6.30 

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  249. 熱可塑性樹脂の金属表面に対する付着に及ぼす電場の影響 Invited International conference

    村島基之, 梅原徳次, 上坂裕之, 鄧興瑞

    トライボロジー会議春2019 東京  2019.5.20 

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  250. Development of control method for friction stabilization International conference

    Takazumi Yamada, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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  251. Effect of mesh structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition with regard to fracture behavior International conference

    Mohd Muhyiddin Bin Mustafa, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Yoshiharu Utsumi, Hideki Moriguchi

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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  252. Effect of doped tantalum in ta-CNx film or tantalum as counterpart material on the friction and wear properties of ta-CNx International conference

    Koki Hojo, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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  253. Development of new active friction control system with morphing surface (Smart Surface) in dry condition International conference

    Yusuke Imaizumi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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    Language:English   Presentation type:Oral presentation (general)  

  254. Elucidation of interaction in polishing process using low hardness abrasive grains and hard abrasive grains International conference

    Hiroaki Takeno, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Shogo Chiba

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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  255. Understanding morphology and tribological behavior of ta-C coating deposited by FCVA method International conference

    Woo-Young Lee, Young-Jun Jang, takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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  256. The tribological properties of DLCs with various dopants and clarification of the mechanism at 200oC International conference

    Ruixi Zhang, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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  257. Preventing Coagulated-Blood Adhesion on a Coated Electrosurgical Knife International conference

    Masahiro Kobayashi, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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  258. Mechanism of improvement wear resistance about CNx coating overcoat on a-C:H coating in oil lubrication International conference

    Shigehiro Ito, Noritsugu Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Manabu Izumida, Naohisa Kawakami

    International Conference on Manufacturins, Machine Design and Tribology 2019  2019.4.24 

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  259. Multiple Friction Control using Morphing Surface -Smart Surface- Invited

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    Taiwan-Japan Tribology Symposium 2018  2018.11.15 

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  260. Development of Morphing Surface made by Additive Manufacturing and Active Friction Control Invited

    Motoyuki Murashima, Masato Kawaguchi, Noritsugu Umehara

    2nd Korea-Japan Tribology Symposium  2018.10.31 

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  261. Effect of Surface Energy of Carbonaceous hard Coatings on Friction Coefficient with In-situ Measurement in ESEM Invited

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    2nd Korea-Japan Tribology Symposium  2018.10.31 

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  262. Effect of inner structure made by 3D printer on wear and friction

    Motoyuki Murashima, Masato Kawaguchi, Shouta Yoshino, Noritsugu Umehara

    Asia International Conference on Tribology 2018  2018.9.17 

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  263. Effect of structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition

    Mohd Muhyiddin Bin Mustafa, Noritusug Umehara, Takayuki Tokoroyama, Motoyuki Murashima, Akinori Shibata, Hideki Moriguch

    Asia International Conference on Tribology 2018  2018.9.17 

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  264. Wear properties of a-C:H and Si-DLC in pressurized high-temperature water

    Makoto Takeuchi, Kiichi. Okuno, Noritsugu Umehara, Motoyuki Murashima

    Asia International Conference on Tribology 2018  2018.9.17 

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  265. Tribological properties of UV irradiated DLC under PAO oil lubrication including ZnDTP, MoDTC and GMO

    Mohd Taufik Bin Taib, Takayuki Tokoroyama, Noritsugu Umehara, Motoyuki Murashima

    Asia International Conference on Tribology 2018  2018.9.17 

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  266. The effect of molybdenum carbide (Mo2C) particles on wear properties of diamond-like carbon under boundary lubrication

    Khairul Amzar Moh, Bin Kassim, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

    Asia International Conference on Tribology 2018  2018.9.17 

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  267. The effect of atmosphere gas on surface energy of carbonaceous hard coatings wear track by in-situ measurement in ESEM

    Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Asia International Conference on Tribology 2018  2018.9.17 

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  268. The clarification of low friction mechanism in oil lubrication for B-DLC coating by in-situ observation of friction area

    Tatsuya Okamoto, Noritsugu Umehara, Motoyuki Murashima, Koji Saito, Kazukoshi Manabe, Keiji Hayashi

    Asia International Conference on Tribology 2018  2018.9.17 

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  269. Noble method of surface energy estimation for local friction area with in-situ friction tester in ESEM

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    Asia International Conference on Tribology 2018  2018.9.17 

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  270. Investigating run-in behavior of ta-C friction and understating wear behavior at high temperature

    Woo-Young Lee, Takayuki Tokoroyama, Motoyuki Murashima, Young-Jun Jang, Jong-Kuk Kim, Noritsugu Umehara

    Asia International Conference on Tribology 2018  2018.9.17 

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  271. カーボンファイバーブラシを用いたDLC膜研磨手法の開発に向けた基礎検討 International conference

    今泉友佑, 村島基之, 野老山貴行, 梅原徳次

    日本機械学会年次大会2018  2018.9.9 

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  272. 二液分離油の反射分光摩擦面その場観察装置を用いたしゅう動部油膜その場分析 International conference

    山田高澄, 梅原徳次, 野老山貴行, 村島基之, 佐藤卓, 大原健司, 羽生田清志

    日本機械学会年次大会2018  2018.9.9 

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  273. EFFECT OF SURFACE ENERGY ON FRICTION COEFFICIENT OF CARBONACEOUS HARD COATINGS BY IN-SITU MEASUREMENT IN ESEM

    Taichi Nakao, Makoto Terada, Noritsugu Umehara, Motoyuki Murashima

    6th International Conference on Integrity-Reliability-Failure  2018.7.22 

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  274. PROPOSAL OF DEVELOPMENT GUIDLINE FOR LOW FRICTIONAL MATERIAL IN OIL LUBRICATION WITH HIGH PERMITTIVITY MATERIAL

    Motoyuki Murashima, See-Jun Oh, Takaaki Miyachi, Noritsugu Umehara, Takayuki Tokoroyama, Kota Konishi, Tatsuya Okamoto

    6th International Conference on Integrity-Reliability-Failure  2018.7.22 

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  275. 変形する表面(スマートサーフェス)を用いた摩擦の能動的制御 International conference

    村島基之

    未来技術ワークショップ  2018.6.23 

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  276. 3Dプリンタにより造形された変形表面による流体潤滑状態の能動的制御 International conference

    村島基之, 川口眞人, 梅原徳次, 野老山貴行

    トライボロジー会議2018春 東京  2018.5.21 

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  277. 種々の炭素系硬質膜を成膜したアルミ合金軸受の油中摩擦摩耗特性 International conference

    北村友規, 梅原徳次, 野老山貴行, 村島基之, 泉田学, 川上直久

    トライボロジー会議2018春 東京  2018.5.21 

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  278. ESEMその場観察によるCNx膜摩耗痕の表面エネルギー変化に及ぼす雰囲気ガスの影響の解明 International conference

    寺田真, 梅原徳次, 村島基之, 野老山貴行

    日本機械学会第18回機素潤滑設計部門講演会  2018.4.23 

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  279. カーボン系硬質膜におけるESEM内その場評価法による摩擦特性に及ぼす表面エネルギーの影響の解明 International conference

    中尾太一, 梅原徳次, 村島基之, 寺田真

    日本機械学会第18回機素潤滑設計部門講演会  2018.4.23 

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  280. 形状変形表面(スマートサーフェス)を用いた摩擦の多段階能動的制御 International conference

    村島基之, 川口眞人, 梅原徳次, 野老山貴行

    日本機械学会第18回機素潤滑設計部門講演会  2018.4.23 

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  281. ループ型カーボンファイバーブラシの水潤滑における摩擦特性の解明 International conference

    竹内惇, 村島基之, 梅原徳次, 野老山貴行

    日本機械学会第18回機素潤滑設計部門講演会  2018.4.23 

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  282. ベース油中B-DLC膜の摩擦部その場観察による超低摩擦メカニズムの解明 International conference

    岡本竜也, 西村英典, 梅原徳次, 村島基之, 野老山貴行

    日本機械学会第18回機素潤滑設計部門講演会  2018.4.23 

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  283. 材料変形を利用した能動的・受動的摩擦制御手法の開発 Invited International conference

    村島基之

    東海トライボロジー第104回研究会  2018.1.31 

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  284. 100μmスケールの細穴内面に対する炭素系薄膜のガス流支援プラズマCVD International conference

    大田梨仁, 上坂裕之, 梅原徳次, 野老山貴行, 村島基之

    トライボロジー会議秋 高松  2017.11.15 

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  285. DLC膜とSiO2の大気中高温下における低摩擦メカニズムの検討 International conference

    古西航大, 梅原徳次, 野老山貴行, 村島基之

    トライボロジー会議秋 高松  2017.11.15 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  286. a-C:H膜の摩耗を促進するMoDTC由来相手炭素鋼上トライボフィルムの分析 International conference

    亀田衣麻莉, 大原健司, 川村靖, 羽生田清志, 梅原徳次, 野老山貴行, 村島基之

    トライボロジー会議秋 高松  2017.11.15 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  287. 3Dプリンタを用いた変形表面の創製と能動的摩擦制御手法の開発-スマートサーフェスへの挑戦- International conference

    村島基之, 吉野笙太, 梅原徳次

    トライボロジー会議秋 高松  2017.11.15 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  288. T-FAD法によるta-C:B膜の成膜及びその高温トライボロジー特性 International conference

    根本公紀, 梅原徳次, 瀧本裕治, 中道健司, 野老山貴行, 村島基之

    トライボロジー会議秋 高松  2017.11.15 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  289. ベース油中CNx膜の摩擦部その場観察による超低摩擦メカニズムの解明 International conference

    岡本竜也, 梅原徳次, 村島基之, 斉藤浩二, 眞鍋和幹, 林圭二

    トライボロジー会議秋 高松  2017.11.15 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  290. 高温高圧高酸素水中におけるSi-DLC膜の耐摩耗メカニズムの解明 International conference

    村島基之, 奥野貴一, 竹内惇, 梅原徳次, 吉田和仁, 稲吉成彦, 佐々木啓次

    トライボロジー会議秋 高松  2017.11.15 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  291. 長繊維熱可塑性CFRPにおける表面粗さ生成モデルの提案 International conference

    室岡貴晴, 村島基之, 梅原徳次, 野老山貴行

    トライボロジー会議秋 高松  2017.11.15 

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  292. 繰り返し押込み荷重による 繰り返し押込み荷重による 繰り返し押込み荷重による 繰り返し押込み荷重による ta -C膜の変形挙動解析 膜 International conference

    DeLaTorre Oscar, 梅原徳次, 野老山貴行, 村島基之

    トライボロジー会議秋 高松  2017.11.15 

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  293. 油中におけるDLC膜の摩擦摩耗に及ぼす相手酸化膜の影響 International conference

    澤木俊哉, 梅原徳次, 野老山貴行, 村島基之

    トライボロジー会議秋 高松  2017.11.15 

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  294. マイクロ波励起・高密度・基材近傍プラズマによる浸炭技術の開発 International conference

    野田啓一郎, 上坂裕之, 梅原徳次, 村島基之, 野老山貴行

    トライボロジー会議秋 高松  2017.11.15 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  295. 高温高圧高酸素水中におけるSi-DLC 膜の耐摩耗特性の解明 International conference

    村島基之, 奥野貴一, 梅原徳次, 吉田和仁, 稲吉成彦, 佐々木啓次

    第58回高圧討論会  2017.11.8 

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  296. 直径100 μm の細穴内面に対する炭素系薄膜のガス流支援プラズマCVD International conference

    大田梨仁, 上坂裕之, Laxminarayan, L. Raja, 梅原徳次, 野老山貴行, 村島基之

    第5回応用物理学会名古屋大学スチューデントチャプター東海地区学術講演会  2017.10.29 

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  297. Effect of Loop size of Looped Carbon Fiber Blush on Friction Coefficient

    Motoyuki Murashima, Eishun Kohno, Noritsugu Umehara, Tomoki Kitamura, Taichi Nakao, Toshiya Sawaki

    The 6th World Tribology Congress  2017.9.17 

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    Language:English   Presentation type:Oral presentation (general)  

  298. Novel properties with complex structure created by 3D Printer Invited

    Motoyuki Murashima

    Mini-symposium in Sakura Science,  2017.9.12 

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    Language:English   Presentation type:Oral presentation (invited, special)  

  299. ループ型カーボンファイバーブラシによる低起動トルク軸受の高負荷容量化 International conference

    後藤康明, 梅原徳次, 村島基之, 上坂裕之

    日本機械学会年次大会 埼玉  2017.9.4 

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  300. THE EFFECT OF FIBER MATERIAL ON FRICTIONAL BEHAVIOR OF LOOPED FIBER BRUSH

    Motoyuki Murashima, Eishun Kohno, Noritsugu Umehara, Tomoki Kitamura, Taichi Nakao, Toshiya Sawaki

    7th International Conference on Mechanics and Materials in Design  2017.6.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Albufeira, Portugal  

  301. WEAR REDUCTION WITH INNER STRUCTURE MADE BY 3D PRINTER

    Motoyuki Murashima, Masato Kawaguchi, Masaya Tanaka, Noritsugu Umehara, Kouki Nemoto, Kiichi Okuno, Kota Konishi

    7th International Conference on Mechanics and Materials in Design  2017.6.11 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Albufeira, Portugal  

  302. The influence of Mo tribofilms on counterpart steel ball for friction and wear of a-C:H coated disc in boundary oil lubrication International conference

    2017.5.15 

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  303. Si含有DLC - 樹脂間の摩擦特性に及ぼすしゅう動中プラズマ照射の影響 International conference

    奥村俊介, 上坂裕之, 梅原徳次, 村島基之

    トライボロジー会議春  2017.5.15 

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    Venue:東京  

  304. Development of Friction Reduction Method on Looped Fiber Brush with Spring steel International conference

    2017.5.15 

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  305. Development of Simple Bearing Friction Tester for Evaluation ofUltra Low friction, Seizure Resistance and Wear Resistance of Carbonaceous Hard Coatings

    Tomoki Kitamura, Noritsugu Umehara, Motuyuki Murashima, Manabu Izumida, Satoshi Takayanagi, Yoshiaki Sato

    The 7th International Conference on Manufacturing, Machine Design and Tribology  2017.4.20 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea  

  306. Proposal for a Method Improving the Surface Roughness of Thermoplastic CFRP

    Takaharu Murooka, Noritsugu Umehara, Motoyuki Murashima

    The 7th International Conference on Manufacturing, Machine Design and Tribology  2017.4.20 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea  

  307. Wear behavior of tetrahedral amorphous carbon nitride under poly alpha-olefin (PAO) lubrication

    Xiaoxu Liu, Ryo Yamaguchi, Noritsugu Umehara, Motoyuki Murashima

    The 7th International Conference on Manufacturing, Machine Design and Tribology  2017.4.20 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea  

  308. Tribological behavior of ta-C:B coatings deposited by Filtered Arc Deposition under sliding at elevated temperature

    Kouki Nemoto, Yuji Takimoto, Noritsugu Umehara, Motoyuki Murashima

    The 7th International Conference on Manufacturing, Machine Design and Tribology  2017.4.20 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea  

  309. The Influence of Mo Tribofilms on Counterpart Steel Ball for Friction and Wear of a-C:H Coated Disc in Base Oil Containing MoDTC

    Imari Kameda, Kenji Ohara, Kiyoshi Hanyuda, Yasushi Kawamura, Noritsugu Umehara, Motoyuki Murashima

    The 7th International Conference on Manufacturing, Machine Design and Tribology  2017.4.20 

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    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, South Korea  

  310. Wear Reduction by Increase of Contact Area with Inner Structure Made by 3D Printer

    Motoyuki Murashima, Masato Kawaguchi, Masaya Tanaka, Noritsugu Umehara, Kouki Nemoto, Kouta Konishi, Kiichi Okuno

    The 7th International Conference on Manufacturing, Machine Design and Tribology  2017.4.19 

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    Language:English   Presentation type:Oral presentation (general)  

  311. Effect of plasma irradiation on the interface between DLC and plastic

    Shunsuke Okumura, Hiroyuki Kousaka, Noritsugu Umehara, Motoyuki Murasima

    9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and nanomaterials  2017.3.1 

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    Language:English   Presentation type:Poster presentation  

  312. Gas blowing from multiple holes for ultra-high-speed and uniform DLC coating with MVP method

    Hiroto Izuoka, Hiroyuki Kousaka, Noritsugu Umehara, Motoyuki Murasima

    9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and nanomaterials  2017.3.1 

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Works 7

  1. 生物の変形機能に学んだ新トライボ材料開発 -3Dプリンタにより造形された変形表面による流体潤滑状態の能動的制御-

    2019.12

  2. 変形する機能性表面を用いた摩擦の能動的制御

    2019.12

  3. 変形する機能性表面を用いた摩擦の能動的制御

    2019.12

  4. 熱可塑性CFRP表面意匠性向上技術の開発

    2018.1

  5. トロント大学留学体験記

    2017.8

  6. 熱可塑性CFRPを量産部品に

    2017.3

  7. 熱可塑性CFRP表面意匠性向上技術の開発

    2017.1

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Research Project for Joint Research, Competitive Funding, etc. 19

  1. 公益財団法人大澤科学技術振興財団

    2020.8 - 2021.7

  2. DLC処理膜の接合強さ及び耐摩耗特性のメカニズム解明

    2019.11 - 2020.5

    国内共同研究 

  3. 公益財団法人 永守財団 研究助成

    2019.10 - 2020.9

  4. 電子エミッションを利用した薄膜コーティングの革新的破壊靭性評価技術開発による機能性工具表面開発への挑戦

    2019.7 - 2020.3

    地方大学・地域産業創生交付金 

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    Grant type:Competitive

  5. 次世代自動車等の開発加速化に係るシミュレーション基盤構築に関連した現象解明研究

    2019.5 - 2020.2

    企業からの受託研究 

  6. 公益財団法人 天田財団 研究助成

    2019.4 - 2021.3

  7. 酸性熱水を利用した地熱発電システム実現に向けた耐酸性・低付着技術の研究開発

    2018.11 - 2021.3

    NEDO 

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    Grant type:Competitive

  8. 酸性熱水を利用した地熱発電システム実現に向けた耐酸性・低付着技術の研究開発

    2018.11 - 2020.3

    出資金による受託研究 

  9. 公益財団法人 永守財団 研究助成

    2018.10 - 2019.9

  10. 公益財団法人 立松財団 研究助成

    2018.8 - 2020.7

  11. Development of New Approaches for Tribological Application of HF-DLC coating with high functionality and increased Durability

    2018.5 - 2019.12

    国際共同研究 

  12. 公益財団法人 中部電気利用基礎研究振興財団 研究助成

    2018.4 - 2020.3

  13. 公益財団法人 公益財団法人 NSKメカトロニクス技術高度化財団 研究助成

    2018.4 - 2020.3

  14. 公益財団法人 マザック財団 研究助成

    2018.4 - 2019.3

  15. 公益財団法人 永守財団 研究助成

    2017.10 - 2018.9

  16. 公益財団法人 中部電気利用基礎研究振興財団 出版助成

    2017.9

  17. 公益財団法人 日比科学技術振興財団 研究助成

    2017.6 - 2018.5

  18. 中部電気利用基礎研究振興財団 国際交流助成 (43rd Leeds-Lyon Symposium on tribology)

    2016.7

  19. 太田海外渡航助成 (IRF2016)

    2016.4 - 2017.3

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KAKENHI (Grants-in-Aid for Scientific Research) 11

  1. Development of design proposal for ultla low friction by controlling of permittivity of nano transformed layer and adsorbed lubricants on carbonaceous hard coating

    Grant number:18H03751  2018.4 - 2022.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Coinvestigator(s) 

  2. 潤滑添加剤含有微小液滴生成と交流電場によるしゅう動面への選択的輸送技術の開発

    2020.4 - 2022.3

    科学研究費補助金 

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    Authorship:Principal investigator 

  3. Development of lubricant additives delivery system with microdroplet using AC electric field

    Grant number:20K14639  2020.4 - 2022.3

    Grant-in-Aid for Early-Career Scientists

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    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

  4. 潤滑添加剤含有微小液滴生成と交流電場によるしゅう動面への選択的輸送技術の開発

    2020.4 - 2022.3

    日本学術振興会  科学研究費助成事業  若手研究

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    Grant type:Competitive

  5. カーボン系硬質膜摩擦時ナノ構造層・潤滑油層誘電率その場評価での超低摩擦指針の提案

    2018.4 - 2022.3

    科学研究費補助金  基盤研究(A)

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    Authorship:Coinvestigator(s) 

  6. 3Dプリンタを利用した能動的変形機能を有するスマートサーフェスの創製と評価

    2017.4 - 2020.3

    科学研究費補助金  若手研究(B)

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    Authorship:Principal investigator 

  7. Invention of active morphing smart surface created by additive manufacturing

    Grant number:17K14577  2017.4 - 2020.3

    Murashima Motoyuki

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    Authorship:Principal investigator 

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    This research work aims to develop a novel morphing surface which actively controls friction. The surface was manufactured using additive manufacturing with ultraviolet curing acrylic resin. The morphing surface showed a friction coefficient of 0.3 with a concave shape, whereas the coefficient increased to 1.0 when the shape changed to convex. In other word, the morphing surface we developed achieved wide range control of friction. Subsequently, we developed a metal morphing surface which was able to use in oil lubricant. In poor lubrication condition, the metal morphing surface with the concave shape showed a friction coefficient of 0.17 which was higher than that of a flat-shape specimen. When the surface shape changed to convex, the friction coefficient decreased to 0.03 which was approximately one-fourth to the coefficient of the flat-shape specimen. The results indicate the new morphing surface achieves active friction control which conventional machines are not able to realize.

  8. 硬質炭素膜の超高速成膜と超低摩擦の両立に向けた学術基盤の構築

    2016.4 - 2019.3

    科学研究費補助金  基盤研究(B)

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    Authorship:Coinvestigator(s) 

  9. Building an academic foundation for balancing ultra-high-speed deposition and ultra-low friction of hard carbon-based coatings

    Grant number:16H04256  2016.4 - 2019.3

    Kousaka Hiroyuki

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    Authorship:Coinvestigator(s) 

    Friction behavior of the sliding between steel ball and a-C:H:Si films, which were deposited at ultra-high-speed larger than 100 mirometer/h, was clarified. Friction tests were conducted in ambient air with relative humidities from 10 to 50 %. Friction coefficient of the a-C:H:Si films after running-in showed 0.05 to 0.12, which increased with increasing RH. For comparison, an a-C:H film was deposited with DC plasma CVD, and its friction coefficient after running-in showed 0.2 to 0.5, which also increased with increasing RH. In all the humidity range employed, friction of the a-C:H:Si was less than that of the a-C:H; in addition, dependence of friction coefficient on humidity of the a-C:H:Si was smaller than that of the a-C:H.
    It should be noted that the influence of as-deposit film structure on the expression of low-friction and the structure of sliding interface were also clarified by detailed surface analysis using XPS, RBS-ERDA, and Raman spectroscopy.

  10. Development of Smart Tribosystem with Friction Induced Transformed Thin Layers

    Grant number:25220902  2013.5 - 2018.3

    Umehara Noritsugu

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    Carbonaceous hard coatings as DLC and CNx are attracted keen attention to show not only high wear resistance but also ultra low friction that is less than 0.01 of friction coefficient under severe sliding condition that liquid lubricants can not work. We developed two novel evaluation systems as the evaluation method of transformed layer of carbonaceous hard coatings with a reflective spectroscopy and the evaluation method of surface energy of sliding surface of carbonaceous hard coatings with an Environmental Scanning Spectroscopy. The first evaluation systems showed that thickness, roughness and mechanical properties of transformed layer of coatings governed ultra low friction phenomena with a thin solid film lubrication theory. The second evaluation system confirmed that low surface energy of sliding scar provided low friction properties. From both clear findings for ultra low friction of carbonaceous hard coatings, new carbonaceous hard coatings as ta-CNx coatings was proposed.

  11. 摩擦誘導超低摩擦ナノ構造層によるスマートトライボシステムの開発

    2013.4 - 2018.3

    科学研究費補助金  基盤研究(S)

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    Authorship:Coinvestigator(s) 

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Industrial property rights 6

  1. 窒素含有炭素皮膜、その製造方法、圧縮機、および摺動部材

    梅原徳次,野老山貴行,村島基之,李義永,洞口典久

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    Application no:PCT/JP2020/007733  Date applied:2020.2

    Country of applicant:Domestic  

  2. 窒素含有炭素皮膜、その製造方法、圧縮機、および摺動部材

    梅原徳次, 野老山貴行, 村島基之, 李義永, 洞口典久

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    Application no:PCT/JP2020/007733  Date applied:2020.2

  3. 蒸気タービン部材

    梅原徳次,宮地孝明,李義永,村島基之,野老山貴行,上坂裕之,古橋未悠,中島悠也

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    Application no:2019-221495  Date applied:2019.12

    Country of applicant:Domestic  

  4. 蒸気タービン部材

    梅原徳次,宮地孝明,李義永,村島基之,野老山貴行,上坂裕之,古橋未悠,中島悠也

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    Application no:2019-221495  Date applied:2019.12

    Country of applicant:Domestic  

  5. 窒素含有炭素皮膜、その製造方法、圧縮機、および摺動部材

    梅原徳次,野老山貴行,村島基之,李義永,洞口典久,石本孝生,田中慎吾

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    Application no:2019-176823  Date applied:2019.9

    Country of applicant:Domestic  

  6. 表面形状可変構造

    村島基之,梅原徳次,吉野笙太

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    Applicant:名古屋大学

    Application no:JP2017104600  Date applied:2017.5

    Country of applicant:Domestic  

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Teaching Experience (On-campus) 29

  1. 卒業研究B

    2020

  2. 卒業研究A

    2020

  3. 機械・航空宇宙システム研修

    2020

  4. 機械・航空宇宙工学実験第2

    2020

  5. 機械・航空宇宙工学実験第1

    2020

  6. 生産プロセス工学セミナー2E

    2020

  7. 生産プロセス工学セミナー2D

    2020

  8. 生産プロセス工学セミナー2C

    2020

  9. 生産プロセス工学セミナー2B

    2020

  10. 生産プロセス工学セミナー2A

    2020

  11. 生産プロセス工学特別実験及び演習B

    2020

  12. 生産プロセス工学特別実験及び演習A

    2020

  13. 生産プロセス工学セミナー1D

    2020

  14. 生産プロセス工学セミナー1C

    2020

  15. 生産プロセス工学セミナー1B

    2020

  16. 生産プロセス工学セミナー1A

    2020

  17. 機械・航空宇宙工学実験第2

    2019

  18. 機械・航空宇宙工学実験第1

    2019

  19. 機械・航空宇宙システム研修

    2019

  20. 加工学第1及び演習

    2019

  21. 機械・航空工学科実験第1

    2018

  22. 機械・航空工学科実験第2

    2018

  23. Autobolibe Engineering Laboratory 2

    2018

  24. 機械・航空工学科実験第2

    2017

  25. 機械・航空工学科実験第1

    2017

  26. Autobolibe Engineering Laboratory 2

    2017

  27. Autobolibe Engineering Laboratory 2

    2016

  28. 機械・航空工学科実験第2

    2016

  29. 機械・航空工学科実験第1

    2016

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Teaching Experience (Off-campus) 1

  1. Autobolibe Engineering Laboratory 2

    Nagoya University)

 

Social Contribution 27

  1. 科学三昧inあいち

    Role(s):Lecturer

    2020.12

  2. 科学三昧inあいち

    Role(s):Appearance, Informant, Demonstrator

    2019.12

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    Audience: High school students

    Type:Seminar, workshop

  3. 科学三昧inあいち

    Role(s):Appearance, Informant, Demonstrator

    2019.12

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    Audience: High school students

    Type:Seminar, workshop

  4. テクノ・フェア@名古屋大学

    Role(s):Informant, Demonstrator

    2019.10

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    Audience: Researchesrs, Company

    Type:Science cafe

  5. ものづくり講習会

    Role(s):Lecturer

    2019.9

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    Audience: Researchesrs, Scientific, Company

  6. 公開講座3D工房@名古屋大学

    Role(s):Lecturer, Informant

    装置開発室  2019.8

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    Audience: High school students, College students, Graduate students, Teachers, Guardians

    Type:Seminar, workshop

  7. オープンキャンパス

    Role(s):Informant

    2019.8

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    Audience: High school students

  8. 科学三昧inあいち

    Role(s):Appearance, Informant, Demonstrator

    2018.12

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    Audience: High school students

    Type:Seminar, workshop

  9. テクノ・フェア@名古屋大学

    Role(s):Informant, Demonstrator

    2018.10

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    Audience: Researchesrs, Company

    Type:Science cafe

  10. ものづくり講習会

    Role(s):Lecturer

    2018.9

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    Audience: Researchesrs, Scientific, Company

  11. オープンキャンパス

    Role(s):Informant

    2018.8

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    Audience: High school students

  12. 3D工房@名古屋大学

    Role(s):Lecturer, Informant

    装置開発室  2018.3

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    Audience: High school students, College students, Graduate students, Teachers, Guardians

    Type:Seminar, workshop

  13. 大学院入試合同説明会

    Role(s):Informant, Demonstrator

    2018.2

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    Audience: College students

    Type:University open house

  14. 科学三昧inあいち

    Role(s):Appearance, Informant, Demonstrator

    2017.12

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    Audience: High school students

    Type:Seminar, workshop

  15. テクノ・フェア@名古屋大学

    Role(s):Informant, Demonstrator

    2017.10

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    Audience: Researchesrs, Company

    Type:Science cafe

  16. ものづくり講習会

    Role(s):Lecturer

    2017.9

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    Audience: Researchesrs, Scientific, Company

  17. 工学部懇話会@名古屋大学

    Role(s):Informant, Demonstrator

    2017.8

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    Audience: Teachers

    Type:University open house

  18. 3D工房@名古屋大学

    Role(s):Lecturer, Informant

    装置開発室  2017.8

     More details

    Audience: High school students, College students, Graduate students, Teachers, Guardians

    Type:Seminar, workshop

  19. オープンキャンパス@名古屋大学

    Role(s):Informant, Demonstrator

    2017.8

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    Audience: General

    Type:University open house

  20. JST 新技術説明会

    Role(s):Lecturer

    2017.7

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    Audience: Researchesrs, Company

    Type:Lecture

  21. 3D工房@名古屋大学

    Role(s):Lecturer, Informant

    装置開発室  2017.3

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    Audience: High school students, College students, Graduate students, Teachers, Guardians

    Type:Seminar, workshop

  22. 科学三昧inあいち

    Role(s):Appearance, Informant, Demonstrator

    2016.12

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    Audience: High school students

    Type:Seminar, workshop

  23. ものづくり講習会

    Role(s):Lecturer

    2016.9

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    Audience: Researchesrs, Scientific, Company

  24. テクノ・フェア名大

    Role(s):Informant, Demonstrator

    2016.9

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    Audience: Researchesrs, General, Scientific, Company, Civic organization, Governmental agency, Media

    Type:Science cafe

  25. オープンキャンパス@名古屋大学

    Role(s):Informant, Demonstrator

    2016.8

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    Audience: High school students, Guardians, General

    Type:University open house

  26. 拠点博士課程学生交流セミナー

    Role(s):Planner, Organizing member

    2013.4 - 2013.11

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    Audience: High school students, College students, Graduate students

  27. 科学三昧inあいち

    Role(s):Appearance, Informant, Demonstrator

    2012.12

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    Audience: High school students

    Type:Seminar, workshop

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Media Coverage 1

  1. ISTS29大西宇宙飛行士講演会

    中日新聞,読売新聞掲載  2012.12

Academic Activities 2

  1. ホームカミングデー

    2019.10

  2. ホームカミングデー

    2018.10