Updated on 2022/03/30

写真a

 
TOKOROYAMA, Takayuki
 
Organization
Graduate School of Engineering Micro-Nano Mechanical Science and Engineering 1 Associate professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Mechanical and Aerospace Engineering
Title
Associate professor
Contact information
メールアドレス

Degree 1

  1. Dr. Engineering ( 2006.3   Nagoya Institute of Technology ) 

Research Interests 7

  1. Coating

  2. Plasma

  3. Rapping

  4. Fluorecent light

  5. Wear

  6. Friction

  7. Tribology

Research Areas 1

  1. Others / Others  / Design Engineering/Machine Functional Elements/Tribology

Research History 5

  1. Nagoya University   Department of Micro-Nano Mechanical Science and Engineering, Graduate School of Engineering   Associate professor

    2017.4

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    Country:Japan

  2. Akita University   Dpartment of Mechanical Engineering, Faculty of Engineering Science   Associate professor

    2016.4 - 2017.3

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    Country:Japan

  3. Akita University   Graduate Scool of Wngineering and Resource Science   Associate professor

    2014.4 - 2016.3

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    Country:Japan

  4. Nagoya University   Graduate School of Engineering   Assistant Professor

    2007.4 - 2014.3

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    Country:Japan

  5. Nagoya University   Graduate School of Mechanical Engineering   Assistant Professor

    2006.4 - 2007.3

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    Country:Japan

Education 3

  1. Nagoya Institute of Technology   Graduate School, Division of Engineering

    2003.4 - 2006.3

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    Country: Japan

  2. Tokyo Metropolitan Institute of Technology   Graduate School, Division of Engineering

    2001.4 - 2003.3

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    Country: Japan

  3. Tokyo Metropolitan Institute of Technology   Faculty of Engineering

    1997.4 - 2001.3

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    Country: Japan

Professional Memberships 5

  1. Japanese Society of Tribologists

    2007.4

  2. The Japan society of mechanical engineers

    2007.4

  3. Japan society of applied electromagnetics and mechanisc

  4. 砥粒加工学会

  5. 日本表面科学会

Committee Memberships 21

  1. 日本トライボロジー学会トライボロジー会議秋2018伊勢実行委員会   庶務幹事  

    2017.10   

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    Committee type:Academic society

  2. 日本トライボロジー学会国際企画委員会   幹事  

    2017.6   

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    Committee type:Academic society

  3. 日本トライボロジー学会トライボロジーオンラインPM委員会   Publisher  

    2017.6   

  4. 日本機械学会機素潤滑設計部門英文ジャーナル編修委員会   機素潤滑設計部門英文ジャーナル編修委員  

    2016.4   

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    Committee type:Academic society

  5. 日本トライボロジー学会役員候補推薦委員会   推薦委員  

    2016.6   

  6. 日本トライボロジー学会学会指定研究会   委員  

    2014.6   

  7. 日本トライボロジー学会第2種研究会固体潤滑研究会   運営委員  

    2011.6   

  8. 日本トライボロジー学会運営委員会   運営委員会委員  

    2010.6   

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    Committee type:Academic society

  9. 砥粒加工学会論文査読委員会   査読委員  

    2016.4 - 2017.3   

  10. 日本トライボロジー学会トライボロジー会議秋盛岡実行委員会   実行委員  

    2014.6 - 2015.5   

  11. 日本トライボロジー学会広報情報化委員会   委員  

    2014.6 - 2016.5   

  12. 日本トライボロジー学会トライボロジー会議春東京実行委員会   実行委員  

    2013.6 - 2016.5   

  13. 日本トライボロジー学会第2種研究会固体潤滑研究会代表幹事   代表幹事  

    2012.6 - 2015.5   

  14. 日本トライボロジー学会校閲委員会幹事   代表幹事  

    2012.6 - 2013.5   

  15. 日本トライボロジー学会校閲委員会   校閲委員会委員  

    2011.6 - 2017.5   

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    Committee type:Academic society

  16. 日本トライボロジー学会秋の学校校長   校長  

    2011.6 - 2012.5   

  17. 精密工学会2010名古屋秋季大会実行委員会   実行委員  

    2009.4 - 2010.3   

  18. 日本トライボロジー学会編集委員会幹事   編集委員会代表幹事  

    2008.6 - 2009.5   

  19. 日本トライボロジー学会トライボロジー会議2008秋名古屋実行委員会   実行委員  

    2008.6 - 2009.5   

  20. 日本トライボロジー学会編集委員会   編集委員  

    2007.6 - 2010.5   

  21. 日本機械学会機素潤滑設計部門広報委員会   広報委員  

    2007.4 - 2008.3   

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Awards 8

  1. 機素潤滑設計部門奨励講演賞

    2006.5   社団法人日本機械学会機素潤滑設計部門  

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    Country:Japan

  2. 日本機械学会東海支部賞奨励賞

    2009.3   日本機械学会東海支部  

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    Country:Japan

  3. JSME Young Engineers Award

    2009.4   The Japan Society of Mechanical Engineers  

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    Country:Japan

  4. JSME Medal for Outstanding Paper

    2010.4   Japanese Society of Mechanical Engineering  

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    Country:Japan

  5. Young Engineers Award of Japanese Society of Tribologists

    2010.5   Japanese Society of Tribologists  

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    Country:Japan

  6. Award of the research fund for international young scientists

    2010.7   National Natural Science Foundation of China  

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    Country:China

  7. Viking of Tribology award

    2011.10   Uppsala University, Ångström Tribomaterials Group  

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    Country:Sweden

  8. IEEE Best Paper Award in 2013 international symposium on Micro-NanoMechatronics and Human Science (MHS2013)

    2013.11   Micro-NanoMechatronics and Human Science (MHS2013)  

    T. Tokoroyama

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

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Papers 236

  1. Effect of fracture properties and surface morphology on wear of DLC coatings at severe contact condition

    Yamada Yusei, Murashima Motoyuki, Umehara Noritsugu, Tokoroyama Takayuki, Lee Woo-Young, Takamatsu Hajime, Tanaka Yoshikazu, Utsumi Yoshiharu

    TRIBOLOGY INTERNATIONAL   Vol. 169   2022.5

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  2. Realization of near-less friction of ta-CNx coating under R32 refrigerant environment

    Lee Wooyoung, Murashima Motoyuki, Umehara Noritsugu, Tokoroyama Takayuki, Horaguchi Norihisa, Ishimoto Takao

    TRIBOLOGY INTERNATIONAL   Vol. 168   2022.4

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  3. Tribological Property of ta-CNx:Ta Deposited via Ion Beam Assisted-Filtered Arc Deposition

    Tokoroyama T., Tagami Y., Murashima M., Lee W-Y, Umehara N., Kousaka H.

    TRIBOLOGY INTERNATIONAL   Vol. 168   2022.4

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

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

    TRIBOLOGY INTERNATIONAL   Vol. 165   2022.1

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

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

    TRIBOLOGY INTERNATIONAL   Vol. 162   2021.10

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

    Kassim K. A. M., Tokoroyama T., Murashima M., Lee W-Y, Umehara N., Mustafa M. M. B.

    TRIBOLOGY INTERNATIONAL   Vol. 159   2021.7

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

    Murashima Motoyuki, Imaizumi Yusuke, Murase Ryo, Umehara Noritsugu, Tokoroyama Takayuki, Saito Toshiyuki, Takeshima Masayuki

    TRIBOLOGY INTERNATIONAL   Vol. 156   2021.4

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

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

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

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  9. 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

    TRIBOLOGY ONLINE   Vol. 16 ( 4 ) page: 255 - 262   2021

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    Language:Japanese  

    DOI: 10.2474/trol.16.255

    Web of Science

  10. 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

    TRIBOLOGY ONLINE   Vol. 16 ( 4 ) page: 263 - 270   2021

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    Language:Japanese  

    DOI: 10.2474/trol.16.263

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

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

    TRIBOLOGY INTERNATIONAL   Vol. 147   2020.7

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  12. The wear classification of MoDTC-derived particles on silicon and hydrogenated diamond-like carbon at room temperature

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

    TRIBOLOGY INTERNATIONAL   Vol. 147   2020.7

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

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

    DIAMOND AND RELATED MATERIALS   Vol. 105   2020.5

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  14. 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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  15. 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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  16. Effect of mating material and graphitization on wear of a-C:H coating in boundary base oil lubrication Reviewed

    K.A.M. Aboua, N. Umehara, H. Kousaka, T. Tokoroyama, M. Murashima, M.M.B. Mustafa, Y. Mabuchi, T. Higuchi, M. Kawaguchi

    Tribology Letters   Vol. 68   2020.1

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

    DOI: http://doi.org/10.1007/s11249-019-1248-6

  17. 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  

    DOI: 10.1007/s11249-019-1248-6

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  18. 樹脂パッドと電界砥粒制御技術を適用した先進結晶基板への低ダメージ機械研磨技術 Reviewed

    千葉翔悟,久住孝幸,赤上陽一,野老山貴行,村岡幹夫

    砥粒加工学会誌   Vol. 64 ( 1 ) page: 32-38   2020.1

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

  19. ENHANCED TRIBOLOGICAL PERFORMANCE OF TA-C COATINGS BY CONTROLLING DUCT BIAS

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

    7TH INTERNATIONAL CONFERENCE INTEGRITY-RELIABILITY-FAILURE (IRF2020)     page: 1053 - 1054   2020

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    Language:Japanese  

    Web of Science

  20. ELUCIDATION OF THE EFFECT OF MoDTC ADDITIVES IN OIL ON LOW FRICTION BY IN-SITU REFLECTANCE OBSERVATION

    Hashizume Naoya, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    7TH INTERNATIONAL CONFERENCE INTEGRITY-RELIABILITY-FAILURE (IRF2020)     page: 1047 - 1048   2020

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    Language:Japanese  

    Web of Science

  21. EFFECTS OF LUBRICATION CONDITION ON FRICTION AND WEAR IN OIL LUBRICATION FOR ALUMINIUM ALLOY BEARINGS WITH VARIOUS CARBONACEOUS HARD COATINGS

    Umehara Noritsugu, Kitamura Tomoki, Tokoroyama Takayuki, Murashima Motoyuki

    7TH INTERNATIONAL CONFERENCE INTEGRITY-RELIABILITY-FAILURE (IRF2020)     page: 1045 - 1046   2020

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  22. EFFECTS OF DANGLING BONDS AND SURFACE ENERGY ON THE TRIBOLOGICAL PROPERTIES OF ta-CNx COATING IN UNLUBRICATED CONDITION

    Miyachi Takaaki, Nakashima Yuuya, Lee Wooyoung, Umehara Noritsugu, Tokoroyama Takayuki, Murashima Motoyuki

    7TH INTERNATIONAL CONFERENCE INTEGRITY-RELIABILITY-FAILURE (IRF2020)     page: 1051 - 1052   2020

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

    Tokoroyama Takayuki, Murashima Motoyuki, Umehara Noritsugu

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

  24. Preface

    Ando Yasuhisa, Tokoroyama Takayuki

    JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING   Vol. 14 ( 3 )   2020

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  25. Application of oil palm fiber in organic brake friction composite material

    Bin Abdollah Mohd Fadzli, Amiruddin Hilmi, Nordin Mohamad Jabbar, Tokoroyama Takayuki, Umehara Noritsugu

    PROCEEDINGS OF MECHANICAL ENGINEERING RESEARCH DAY 2020 (MERD'20)     page: 22 - 23   2020

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

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

    TRIBOLOGY ONLINE   Vol. 14 ( 5 ) page: 388-397   2019.12

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

    DOI: 10.2474/trol.14.388

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

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

    JURNAL TRIBOLOGI   Vol. 23   page: 38-47   2019.12

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  28. ベース油中ta-CNx膜の摩擦時反射分光分析その場観察による低摩擦メカニズムの解明 Reviewed

    岡本竜也,梅原徳次,野老山貴行,村島基之

    日本機械学会論文集   Vol. 85 ( 875 ) page: transjsme.19-00071   2019.7

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

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

    TRIBOLOGY LETTERS   Vol. 67 ( 2 ) page: 65   2019.6

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

    DOI: 10.1007/s11249-019-1179-2

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

    X. Liu, N. Umehara, T. Tokoroyama, M. Murashima

    Tribology International   Vol. 131   page: 102-111   2019.3

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  31. 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

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

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

    Tribology International     2019.1

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    DOI: j.triboint.2019.01.016

  33. Collecting micrometer-sized wear particles generated between DLC/DLC surfaces under boundary lubrication with electric field Reviewed

    T. Tokoroyama, T. Kamiya, N.A.B.H. Ahmed, N. Umehara

    JSME Mechanical Engineering Letters   Vol. 4   page: 18-00089   2018.12

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

    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   2018.12

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

    DOI: 10.2474/trol.13.290

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  35. Effect of Substrate Bias and Temperature on Friction and Wear Properties for ta-C Coating Prepared under Different Substrate Bias Voltages with Filtered Cathodic Vacuum Arc Deposition Reviewed

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

    TRIBOLOGY ONLINE   Vol. 13 ( 5 ) page: 241-247   2018.10

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

    DOI: 10.2474/trol.13.241

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

    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 )   2018.10

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

    DOI: 10.1299/jamdsm.2018jamdsm0129

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  37. FCVA法によるホウ素含有炭素ターゲットを用いたta-C:B膜の成膜及び300℃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. 60 ( 10 ) page: 699-705   2018.10

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

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

    JURNAL TRIBOLOGI   Vol. 18   page: 1-19   2018.9

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

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

    TRIBOLOGY ONLINE   Vol. 13 ( 3 ) page: 119-130   2018.7

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

    DOI: 10.2474/trol.13.119

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  40. 境界潤滑条件における模擬摩耗粒子の摩擦面その場観察 Reviewed

    千葉翔悟,伊神汰一,野老山貴行

    材料試験技術協会論文集   Vol. 63 ( 1 ) page: 17-21   2018.1

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

    Taib M. T., Tokoroyama T., Umehara N., Murashima T.

    PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)     page: 206 - 207   2018

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  42. Tribological properties of 3D-printed pin with internal structure formation under dry sliding conditions

    Tahir Noor Ayuma Mat, Azmi Muhamad Syafwan, Bin Abdollah Mohd Fadzli, Ramli Faiz Redza, Amiruddin Hilmi, Tokoroyama Takayuki, Umehara Noritsugu

    PROCEEDINGS OF MECHANICAL ENGINEERING RESEARCH DAY 2018 (MERD)     page: 260 - 261   2018

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  43. THE WEAR OF DIAMOND-LIKE CARBON BY MOLYBDENUM BASED PARTICLES UNDER BOUNDARY LUBRICATION

    Tokoroyama T., Nishino T., Yamaguchi M., Kassim K. A. M., Umehara N.

    IRF2018: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON INTEGRITY-RELIABILITY-FAILURE     page: 943 - 944   2018

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  44. 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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  45. 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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  46. 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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  47. 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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  48. Effect of oil temperature and counterpart material on the wear mechanism of ta-CNx coating under base oil lubrication Reviewed

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

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

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

    DOI: 10.1016/j.wear.2017.08.012

    Web of Science

  49. The effects of temperature, pressure and dissolved oxygen concentration (DO) in water on the wear of the hydrogenated diamond-like carbon (HDLC) at high temperature and pressurized water Reviewed

    M.R.B. Mohamad Zin, Y. Yagi, K. Sasaki, N. Inayoshi, T. Tokoroyama, N. Umehara, H. Kousaka, S. Kawara

    Tribology International   Vol. 109   page: 48-57   2017.3

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  50. 分離形熱サイフォンを用いた血液凝固付着抑制電気メスの開発 Reviewed

    野老山貴行,大須賀未都,梅原徳次,上坂裕之

    日本機械学会論文集   Vol. 83 ( 845 ) page: 16-00123   2017.1

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  51. 往復式及び回転式シェーバーによる人工毛切断挙動観察 Reviewed

    野老山貴行,中西直哉,梅原徳次

    日本機械学会論文集   Vol. 82 ( 844 ) page: 16-00187   2016.12

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  52. Ultra-low friction properties of carbon nitride tantalum coatings in the atmosphere Reviewed

    T. Tokoroyama, T. Hattori, N. Umehara, H. Kousaka, K. Manabe, M. Kishi, Y. Fuwa

    Tribology International   Vol. 103   page: 388-393   2016.11

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  53. Clarification of relationship between friction coefficient and transformed layer of CNx coating by in-situ spectroscopic analysis

    H. Nishimura, N. Umehara, H. Kousaka, T.Tokoroyama

    Tribology International   Vol. 93 ( B ) page: 660-665   2016.1

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  54. 固体潤滑シートによるチタン合金板の穴あけ加工におけるバリ発生の抑制 Reviewed

    川崎貴之,梅原徳次,上坂裕之,野老山貴行,堀江茂,松山洋介

    日本機械学会論文集   Vol. 81 ( 831 ) page: 15-00247   2015.10

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  55. 熱可塑性樹脂の金属に対する付着に及ぼす金属表面温度の影響 Reviewed

    村島基之,梅原徳次,上坂裕之,野老山貴行

    日本機械学会論文集   Vol. 81 ( 822 ) page: 14-00098   2015.2

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  56. プラズマCVD法により作製したSi-CNxHy膜の油中摩擦特性 Reviewed

    北爪一考,上坂裕之,野老山貴行,梅原徳次,不破良雄,眞鍋和幹

    日本機械学会論文集   Vol. 80 ( 820 ) page: trans0340   2014.12

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  57. Deposition and tribological behaviors of ternary BCN coatings at elevated temperatures Reviewed

    X. Deng, H. Kousaka, T. Tokoroyama and N. Umehara

    Surface and Coatings Technology   Vol. 259   page: 2-6   2014.12

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  58. Effect of tetramethylsilane flow on the deposition and tribological behaviors of silicon doped diamond-like carbon rubbed against poly(oxymethylene) Reviewed

    X. Deng, Y. Lim, H. Kousaka, T. Tokoroyama and N. Umehara

    Japanese Journal of Applied Physics   Vol. 53 ( 11 ) page: RA04   2014.9

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  59. The effect of oil temperature and additive concentration on the wear of non-hydrogenated DLC coating Reviewed

    H.A. Tasdemir, M. Wakayama, T. Tokoroyama, H. Kousaka, N. Umehara, Y. Mabuchi and T. Higuchi

    Tribology International   Vol. 77   page: 65-71   2014.9

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  60. PTFEの親水化とブラシ化処理の水潤滑下耐焼付き性に及ぼす影響 Reviewed

    河原真吾,梅原徳次,野老山貴行,鈴木雅裕,齋藤利幸,新井大輔

    日本機械学会論文集   Vol. 80 ( 816 ) page: MN0243   2014.8

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  61. 高摩擦・低相手攻撃性アブレシブ形状及びディスク材の提案(アブレシブ摩耗における摩耗度に及ぼすアブレシブの開き角及びディスク材の単位体積当たりの破断エネルギの影響) Reviewed

    炭竈美穂,野老山貴行,上坂裕之,梅原徳次

    日本機械学会論文集   Vol. 80 ( 815 ) page: SMM0182   2014.7

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  62. Tribological behaviors of tetrahedral amorphous carbon (ta-C) coatings at elevated temperature Reviewed

    Xingrui Deng, Hiroyuki Kousaka, Takayuki Tokoroyama, Noritsugu Umehara

    Tribology International   Vol. 75   page: 98-103   2014.7

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  63. 潤滑油中におけるDLC膜同士の摩擦により発生した摩耗粒子の分析手法 Reviewed

    大原健司,野老山貴行,上坂裕之,梅原徳次

    トライボロジスト   Vol. 59 ( 7 ) page: 429-436   2014.7

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  64. 高摩擦・低相手攻撃性アブレシブ形状の提案(アブレシブ摩耗における摩擦係数と相手材の摩耗度に及ぼすアブレシブの開き角の影響) Reviewed

    炭竈美穂,梅原徳次,野老山貴行,上坂裕之

    日本機械学会論文集   Vol. 80 ( 811 ) page: SMM0038   2014.3

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  65. Influence of zinc dialkyldithiophosphate tribofilm formation on the tribological performance of self-mated diamond-like carbon contacts under boundary lubrication Reviewed

    H.A. Tasdemir, T. Tokoroyama, H. Kousaka, N. Umehara and Y. Mabuchi

    Thin Solid Films   Vol. 562 ( 1 ) page: 389-397   2014.1

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  66. CNx膜のイオンビームミキシング成膜におけるドロップレットの生成抑制手法の提案 Reviewed

    八木雄治,榊原和希,野老山貴行,梅原徳次,不破良雄,眞鍋和幹

    日本機械学会論文集(C編)   Vol. 79 ( 807 ) page: 4443-4451   2013.11

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  67. Effect of Texturing on Friction Properties of CNx Coating Layer under Oil Lubrication with Imitation Wear Debris Reviewed

    Takayuki TOKOROYAMA, Tomoyo KANEKO, Yosuke TSUKIYAMA, Noritsugu UMEHARA, Tetsuya SATO and Tadashi SUZUKI

      Vol. ** ( ** ) page: 掲載決定   2013.10

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  68. Wear behaviour of tetrahedral amorphous diamond-like carbon in additive containing lubricants Reviewed

    H. Tasdemir, M. Wakayama, T. Tokoroyama, H. Kousaka, N. Umehara, Y. Mabuchi, T. Higuchi

    Wear   Vol. ** ( ** ) page: Accepted   2013.9

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  69. Thermal stability and high-temperature tribological properties of a-C:H and Si-DLC deposited by microwave sheath voltage combinatio plasma Reviewed

    X. Deng, H. Kousaka, T. Tokoroyama, N. Umehara

    Tribology Online   Vol. ** ( ** ) page: Accepted   2013.9

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  70. Evaluation of transformed layers of DLC after sliding in oil with spectroscopic reflectometry Reviewed

    K. Ohara, N.A.B Masripan, H. Kousaka, T. Tokoroyama, N. Umehara, S. Inayoshi, K. Zushi, M. Fujita

    Tribology International   Vol. ** ( ** ) page: Now in printing   2013.9

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  71. Ultra-low friction of diamond-like carbon (DLC) under oil boundary lubrication Reviewed

    H. Tasdemir, M. Wakayama, T. Tokoroyama, H. Kousaka, N. Umehara, Y. Mabuchi, T. Higuchi

    Tribology International   Vol. ** ( ** ) page: Now in printing   2013.9

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  72. 加熱冷却過程におけるDLC膜のはく離メカニズムの解明 Reviewed

    三宮大輝,上坂裕之,梅原徳次,野老山貴行

    日本機械学会論文集(C編)   Vol. 79 ( 799 ) page: 858-865   2013.3

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  73. Effect of transfer layer on ultra low friction of CNx coating under blowing dry Ar Reviewed

    N.A.B. Masripan, Y. Miyahira, H. Nishimura, T. Tokoroyama, N. Umehara, Y. Fuwa

    Tribology Online   Vol. 8 ( 3 ) page: 219-226   2013.3

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  74. カーボンナノチューブの押込みにおけるヒステリシス発生メカニズムの解明 Reviewed

    若山幹晴,月山陽介,野老山貴行,上坂裕之,梅原徳次

    日本機械学会論文集(C編)   Vol. 79 ( 801 ) page: 1821-1826   2013.3

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  75. Design of low-friction PVD coating systems with enganced running-in performance - carbon overcoats on TaC/aC Reviewed

    H. Nyberg, T. Tokoroyama, U. Wiklund, S. Jacobson

    Surface and Coatings Technology   Vol. 222   page: 48-54   2013.3

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  76. カーボンファイバーの摩擦特性に及ぼすプラズマ照射の影響 Reviewed

    三宮大輝,梅原徳次,野老山貴行,上坂裕之

    日本機械学会論文集(C編)   Vol. 79 ( 801 ) page: 1827-1836   2013.3

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  77. Carbonaceous overcoat synthesized on carbon nitride coating and UV irradiation effect to obtain low friction surface for DLC

    T. Tokoroyama, N. Umehara

    Proc. of 3rd ITS2013     page: 0079   2013.3

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  78. 反射分光分析による油中摩擦におけるDLC膜の構造変化層厚さ及び微小摩耗量の評価方法の開発とその応用

    大原健司,N.A.B. Masripan,梅原徳次,上坂裕之,野老山貴行,稲見茂,図師耕治,藤田正仁

    日本機械学会東海支部代62期総会講演会     page: 409-410   2013.3

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  79. 次世代自動車のための高摩擦・低相手攻撃性ブレーキパッドの開発

    炭竈美穂,野老山貴行,梅原徳次,上坂裕之

    日本機械学会東海支部代62期総会講演会     page: 411-412   2013.3

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  80. Thermal stability and high temperature tribological properties of a-C:H and Si-DLC deposited by microwave sheath voltage combination plasma

    X. Deng, T. Tokoroyama, N. Umehara

    Proc. of 2nd Workshop on High temperature tribology     page: 1-20   2013.3

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  81. Hardness effect of DLC on tribological properties for sliding bearing under boundary lubrication condition in additive-free mineral base oil Reviewed

    N.A.B. Masripan, K. Ohara, N. Umehara, H. Kousaka, T. Tokoroyama, S. Inami, K. Zushi, M. Fujita

    Tribology International   Vol. ** ( ** ) page: Now in printing   2013

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  82. シリコーンオイルフリー注射器実現のための光化学的フッ素化処理ガスケットの最適化 Reviewed

    小椋東吾,宇佐美恵佑,上坂裕之,梅原徳次,野老山貴行

    日本機械学会論文集(C編)   Vol. ** ( ** ) page: 掲載決定   2013

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  83. The compatibilty condition of drill for sharpness and high wear resistance in drilling of CFRP

    N. Li, T. Tokoroyama, N. Umehara

        page: 202-203   2012.9

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  84. The UV irradiation effect for structural change of carbonaceous coating and its frictional property

    T. Tokoroyama, N. Umehara

        page: 204-205   2012.9

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  85. Development of reduction method of droplets on the basis of their generation mechanism for carbon nitride coating by IBAD method

    Y. Yagi, T. Tokoroyama, N. Umehara, Y. Fuwa, K. Manabe

        page: 7-8   2012.9

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  86. The thickness measurement of UV irradiated carbonaceous coating's structural change layer by ellipsometry

    T. Tokoroyama, N. Umehara

        page: 71-72   2012.9

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  87. The basic study of Carbon Nitride coating for low friction under oil lubrication

    K. Sakakibara, T. Tokoroyama, N. Umehara, Y. Fuwa, K. Manabe

        page: 67-68   2012.9

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  88. High-adhesion and low-temperature processing of Si-containing hydrogenated carbon nitride films deposited by PECVD

    K. Kitazume, H. Kousaka, N. Umehara, T. Tokoroyama, Y. Fuwa, K. Manabe

        page: S116032   2012.9

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  89. Tribological property of carbon fiber

    Y. Otsuka, T. Tokroyama, N. Umehara, Y. Tsukiyama

        page: J111025   2012.9

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  90. Clarification of hysteresis mechanism in the indentation of the high-densed carbon nanotube film

    M. Wakayama, Y. Tsukiyama, T. Tokoroyama, H. Kousaka, N. Umehara

        page: J111021   2012.9

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  91. The clarification of mechanism of DLC under repeated impact

    Y. Yamaguchi, T. Tokoroyama, N. Umehara, N. Inayoshi, T. Akao, N. Miyamoto

        page: J111034   2012.9

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  92. The basic study of Carbon Nitirde coating to generate low friction under oil lubrication

    K. Sakakibara, T. Tokoroyama, N. Umehara, K. Manabe, Y. Fuwa

        page: J111031   2012.9

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  93. Clarification of mechanism and control techniques about droplets of the CNx coating by ion beam assisted deposition

    Y. Yagi, T. Tokoroyama, H. Kousaka, N. Umehara, Y. Fuwa, K. Manabe

        page: S116025   2012.9

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  94. Development of high friction and low aggressiveness brake pad for next-generation automobile

    M. Sumigama, T. Tokoroyama, H. Kousaka, N. Umehara

        page: S116012   2012.9

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  95. Hardness effect of DLC on tribological properties for sliding bearing under boundary lubrication condition in additive-free mineral base oil

    N.A. Masripan, K. Ohara, N. Umehara, H. Kousaka, T. Tokoroyama, S. Inami, K. Zushi, M. Fujita

    Proc. of Leeds-Lyon symposium 2012     page: Ⅶ(ⅴ)   2012.8

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  96. Evaluation of transformed layers of DLC after sliding in oil with spectroscopic reflectometry

    K. Ohara, N.A.B. Masripan, N. Umehara, H. Kousaka, T. Tokoroyama, S. Inami, K. Zushi, M. Fujita

    Proc. of Leeds-Lyon symposium 2012     page: ⅩⅥ(ⅳ)   2012.8

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  97. Ultra-low friction of diamond-like carbon (DLC) under oil boundary lubrication

    H.A. Tasdemir, T. Tokoroyama, H. Kousaka, N. Umehara, Y. Mabuchi, T. Higuchi

    Proc. of Leeds-Lyon symposium 2012     page: ⅩⅥ(ⅱ)   2012.8

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  98. Future developments of a deformation-wear transition map of DLC coating Reviewed

    M.F.B. Abdollah, Y. Yamaguchi, T. Akao, N. Miyamoto, T. Tokoroyama and N. Umehara

    Tribology Online   Vol. 7 ( 3 ) page: 107-111   2012.6

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  99. TEM evaluation of super low friction surface of Carbon Nitride coating

    H. Inoue, T. Tokoroyama, N. Umehara, S. Arai, N. Tanaka

        page: 163-164.   2012.4

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  100. The effect of UV irradiation on carbonaceous coating

    T. Tokoroyama, N. Umehara

        page: 171-172.   2012.4

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  101. Influence of UV irradiation for low frictional performance of CNx coatings Reviewed

    T. Tokoroyama, M. Kamiya, N. UMEHARA, C. Wang, D.F. Diao

    Lubrication Science   Vol. 24 ( 3 ) page: 129-139   2012.4

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  102. Ultra-low friction of Si-Containing Hydrogenated Carbon Nitride Film Deposited by Plasma-Enhanced Chemical Vapor Deposition

    Sakakibara, H., Kousaka, H., Tokoroyama, T. and Umehara, N.

    Proceedings of The 5th International Conference on Plasma Nanotechnology & Science (IC-PLANTS 2012)     page: 170-171   2012.3

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  103. Development of internal DLC coating method without surface roughness increase for high-performance suspension

    Hanihara, A., Kousaka, H., Tokoroyama, T. and Umehara, N.

    Proceedings of The 5th International Conference on Plasma Nanotechnology & Science (IC-PLANTS 2012)     page: 176-177   2012.3

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  104. Development of a Radio Knife Suppressing the Adhesion of Coagulated Blood Reviewed

    Yuya Nakashima, Noritsugu Umehara, Takayuki Tokoroyama and Yoichi Akagami

      Vol. 78 ( 786 ) page: 605-614   2012.2

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  105. Deformation-wear transition map of DLC coating under cyclic impact loading Reviewed

    M.F.B. Abdollah, Y. Yamaguchi, T. Akao, N. Inayoshi, N. Miyamoto, T. Tokoroyama and N. Umehara

    Wear   Vol. 274-275 ( 27 ) page: 435-441   2012.2

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  106. Friction properties of carbon fiber brush

    Y. Otsuka, H. Kousaka, T. Tokoroyama and N. Umehara

    2011 KNU-Nagoya Unic. Joint Symposium on High Performance of Tribosystem     page: 41-43   2011.10

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  107. Clarification of the hysteresis mechanism in the indentation of the high-densed carbon nanotube film

    M. Wakayama, H. Kousaka, T. Tokoroyama and N. Umehara

    2011 KNU-Nagoya Unic. Joint Symposium on High Performance of Tribosystem     page: 65-67   2011.10

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  108. Observation of cross-sectional images for impacted DLC

    Y. Yamaguchi, M. Fadzli, T. Tokoroyama and N. Umehara

    2011 KNU-Nagoya Unic. Joint Symposium on High Performance of Tribosystem     page: 62-64   2011.10

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  109. Development of internal DLC coating method without surface roughness increase for high-performance suspension

    A. Hanihara, H. Kousaka, T. Tokoroyama and N. Umehara

    2011 KNU-Nagoya Unic. Joint Symposium on High Performance of Tribosystem     page: 47-49   2011.10

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  110. The consideration about the influence of the heating and cooling process on peeling off of DLC film

    D. Sannomiya, H. Kousaka, T. Tokoroyama and N. Umehara

    2011 KNU-Nagoya Unic. Joint Symposium on High Performance of Tribosystem     page: 44-46   2011.10

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  111. The influence of interlayer for frictional property and adhesion of IBAD CNx coating Reviewed

    M. Wakayama, Y. Tsukiyama, T. Tokoroyama, H. Kousaka, N. Umehara, M. Wang and T. Toihara

      Vol. 77 ( 781 ) page: 3502-3510   2011.10

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  112. Mechanical and Wear Properties of Ti-Ni Alloy Thin Film

    Hitoo Tokunaga, Keisuke Matsumoto, Minoru Goto, Takayuki Tokoroyama and Noritsugu Umehara

        2011.9

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    DOI: S043031

  113. The suggestion of adhesion force evaluation method for heat denaturation protein

    Yasuyuki Takaoka, Naoko Honda, Yosuke Tsukiyama, Takayuki Tokoroyama, Hiroyuki Kousaka and Noritsugu Umehara

        2011.9

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    DOI: S114051

  114. The influence of droplets for frictional property of IBAD CNx coating

    Kazuki Sakakibara, Takayuki Tokoroyama, Noritsugu Umehara and Yoshio Fuwa

        2011.9

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    DOI: S114033

  115. Analysis of DLC wear particles on oil lubrication

    Kenji Ohara, Toru Kamiya, Noritsugu Umehara, Takayuki Tokoroyama and Hiroyuki Kousaka

        2011.9

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    DOI: S114021

  116. Observation of Cross-sectional images impacted DLC films

    Yuto Yamaguchi, Mohd Fadzli, Takayuki Tokoroyama, Noritsugu Umehara, Naruhiko Inayoshi, Tsuyoshi Akao and Nobuyuki Miyamoto

        2011.9

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    DOI: S115012

  117. The effect of maximum normal impact load, absorbed energy and contact impulse on the impact crater volume/depth of DLC coating under impact Reviewed

    M.F.B. Abdollah, Y. Yamaguchi, T. Akao, N. Inayoshi, T. Tokoroyama, N. Umehara

    Tribology Online   Vol. 6 ( 6 ) page: 257-264   2011.8

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  118. Reduction of adhesion of coagulation to a radio knife tip with filled micro-grooves Reviewed

    Yuya NAKASHIMA, Noritsugu UMEHARA, Takayuki TOKOROYAMA and Yoichi AKAGAMI

      Vol. 77 ( 779 ) page: 2916-2921   2011.7

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  119. In-situ Observation for Tribomicroplasma and Transfer Layer Forming of Carbon Nitride Coating Reviewed

    Y. Miyahira, T. Tokoroyama, N. Umehara and Y. Fuwa

    Journal of Japanese Society of Tribologists   Vol. 56 ( 6 ) page: 378-384   2011.6

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  120. The Effect of Ultraviolet Irradiation on Friction Coefficient of Diamond-Like Carbon Coating in Air Reviewed

    Takayuki TOKOROYAMA*, Takuya HATANO, Noritsugu UMEHARA, and Yoshio FUWA

    Journal of Japanese Society of Tribologists   Vol. 56 ( 4 ) page: 256-263   2011.4

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  121. Development of a radio knife supperssing the adhesion of coagulated blood

    Y. Nakashima, N. Umehara, T. Tokoroyama

        page: 299-300   2011.3

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  122. Effect of real contact area and average surface pressure on friction

    T. Ogura, N. Umehara, H. Kousaka, T. Tokoroyama

        page: 295-296   2011.3

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  123. Friction control of CNx coated thrust bearing by temperature control

    M. Kajiya, T. Tokoroyama, H. Kousaka, N. Umehara

        page: 285-286   2011.3

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  124. CFRPの穴あけ加工における超硬合金ドリルの摩耗機構の解明

    梅原徳次,野老山貴行,西尾潤一

    日本機械学会東海支部第60期総会講演会     page: 611   2011.3

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  125. Mechanical property of DLC coated with plasma-enhanced CVD employing adamantane as precursor material

    S. Moroto, H. Kousaka, T. Tokoroyama, N. Umehara

    Proceedings of ICOMM 2011     page: 657-661   2011.3

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  126. Study on diference between static and dynamic friction coefficients of DLC film deposited by surface wave-excited plasma CVD

    A. Hanihara, H. Kousaka, T. Tokoroyama, N. Umehara

        page: 128   2011.3

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  127. The Effect of Substrate Temperature, Nitrogen Ionbeam Acceleration Voltage, and Deposition Rate on Hardness of Carbon Nitride Coating Reviewed

    T. TOKOROYAMA, R. SAITO, N. UMEHARA and Y. FUWA

      Vol. 77 ( 775 ) page: 624-630   2011.3

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  128. 窒素中で超低摩擦を発現するCNx膜の極表面層の機械的特性の評価 Reviewed

    木村徳博,月山陽介,野老山貴行,梅原徳次

    日本機械学会論文集(C編)   Vol. 76 ( 772 ) page: 3794-3799   2010.12

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  129. The Effect of Ultraviolet Irradiation on Friction Coefficient of Diamond-Like Carbon Coating in Air Reviewed

    T. Tokoroyama, T. Hatano, N. Umehara, Y. Fuwa

      Vol. 76 ( 771 ) page: 3166-3171   2010.11

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  130. The effect of ultraviolet light irradiation on tribological properties of hydrogenated DLC

    T. Tokoroyama, T. Hatano, N. Umehara and Y. Fuwa

    Proceedings of MHS2010     page: 234-238   2010.11

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  131. Phase Transformation Studies on a-C Coating under Repetitive Impacts Reviewed

    Mohd Fadzli Bin Abdollah, Yuto Yamaguchi, Tsuyoshi Akao, Naruhiko Inayoshi, Noritsugu Umehara, and Takayuki Tokoroyama

    Surface and Coatings Technology   Vol. 205 ( 2 ) page: 625-631   2010.10

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  132. 窒化炭素膜のトライボロジー特性に及ぼす紫外線照射の影響 Reviewed

    野老山貴行,梅原徳次,神谷真人,不破良雄

    トライボロジスト   Vol. 55 ( 9 ) page: 659-665   2010.9

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  133. Deformations of carbon nanotubes made by surface decomposition of SiC

    Tsukiyama, Y., Kimura, N., Wakayama, M., Umehara, N., Kusunoki, K.

        page: 497-498   2010.9

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  134. The effect of maximum normal impact load absorbed energy and contact impulse on the impact craters volume depth of DLC coating under repetitive impacts

    Fadzli, M., Yamaguchi, Y., Akao, T., Inayoshi, N., Tokoroyama, T., Umehara, N.

        page: 471-472   2010.9

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  135. CNx膜スラスト平面軸受における超低摩擦発現機構の検討

    加治屋誠,野老山貴行,梅原徳次

    日本トライボロジー学会トライボロジー会議予稿集(福井2010-9)     page: 465-466   2010.9

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  136. 焦げ付き抑制のための微小溝を付与した複合材電気メスチップの開発

    中島悠也,梅原徳次,野老山貴行,赤上陽一

    精密工学会秋季大会学術講演会講演論文集     page: 635-636   2010.9

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  137. CFRP穴あけにおける超硬合金ドリルの摩耗機構

    西尾潤一,梅原徳次,野老山貴行,高橋孝幸,井加田朗

    精密工学会秋季大会学術講演会講演論文集     page: 323-324   2010.9

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  138. DLC膜の摩擦特性に及ぼす紫外線照射の影響

    野老山貴行,羽田野拓也,梅原徳次,不破良雄

    日本機械学会2010年度年次大会講演論文集   Vol. 8   page: 229-230   2010.9

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  139. カーボンファイバーの摩擦特性に及ぼすプラズマ照射の影響

    三宮大輝,野老山貴行,梅原徳次

    日本機械学会2010年度年次大会講演論文集   Vol. 4   page: 61-62   2010.9

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  140. 窒化炭素膜の極表面せん断抵抗のAFM測定

    月山陽介,木村徳博,野老山貴行,梅原徳次

    日本機械学会2010年度年次大会講演論文集   Vol. 8   page: 231-232   2010.9

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  141. 無潤滑下における鉄添加DLC膜のトライボロジー特性

    鈴木雅裕,齊藤利幸,野老山貴行

    日本トライボロジー学会トライボロジー会議予稿集(福井2010-9)     page: 463-464   2010.9

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  142. 電子ビーム蒸着およびイオンビームミキシング法を用いたCNx膜成膜時基板冷却の硬さに及ぼす影響

    野老山貴行,齋藤諒介,梅原徳次,不破良雄

    日本トライボロジー学会トライボロジー会議予稿集(福井2010-9)     page: 75-76   2010.9

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  143. 微小振動による電気メスチップ先端における血液凝固付着抑制効果

    中島悠也,梅原徳次,野老山貴行

    日本トライボロジー学会トライボロジー会議予稿集(福井2010-9)     page: 429-430   2010.9

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  144. CFRP穴あけにおける超硬合金ドリルの摩耗機構

    西尾潤一,梅原徳次,野老山貴行,高橋孝幸,井加田朗

    日本トライボロジー学会トライボロジー会議予稿集(福井2010-9)     page: 1-2   2010.9

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  145. CNx膜の摩擦に及ぼす移着膜と発光現象の影響

    宮平裕生,野老山貴行,梅原徳次,不破良雄

    日本トライボロジー学会トライボロジー会議予稿集(福井2010-9)     page: 77-78   2010.9

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  146. Friction reduction between thermoplastic elastomers and plastics under unlubricated condition Reviewed

    Keisuke USAMI, Hiroyuki KOUSAKA, Noritsugu UMEHARA, Takayuki TOKOROYAMA

      Vol. 76 ( 767 ) page: 1833-1837   2010.7

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  147. Micro Texturing of Polycarbonate Plate with Ion Beam Irradiation and its Friction Properties in Water

    N. Umehara, Y. Demizu, J. Nishio, T. Tokoroyama

    Key Engineering Materials   Vol. 447-448   page: 676-680   2010.7

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  148. Tribological properties of TiNi alloy films deposited by ion beam sputtering

    Matsumoto, K., Goto, M., Tokunaga, H., Tokoroyama, T., and Umehara, N.

    Proceedings of JAST Tribology Conference Tokyo     page: 103-104   2010.5

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  149. The effect of substrate temperature of the hardness of CNx coating

    Tokoroyama, T., Saito, R., Umehara, N., and Fuwa, Y.

    Proceedings of The 10th. Machine Design and Tribology Division Meeting in JSME     page: 141-142   2010.4

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  150. Influence of Ultraviolet Ray Irradiation on CNx Coating's Tribological Characteristics

    T. Tokoroyama, N. Umehara, Y. Fuwa

    Proceedings of ICMCTF2010     page: 3   2010.4

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  151. Micro Texturing of Polycarbonate Plate with Ion Beam Irradiation and its Friction Properties in Water Reviewed

    Noritsugu Umehara, Yasuhito Demizu, Junichi Nishio, Takayuki Tokoroyama

    Key Engineering Materials   Vol. 447-448 ( 676 ) page: 676-690   2010.4

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  152. Micro Texturing of Polycarbonate Plate with Ion Beam Irradiation and its Friction Properties in Water Reviewed

    Noritsugu Umehara et al., 2010, Key Engineering Materials, 447-448, 676

    Key Engineering Materials   Vol. 447-448 ( 676 ) page: 676-680   2010.4

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  153. Mechanical property control of the DLC film by using adamantane as precursor material in plasma-enhanced CVD

    Moroto, S., Kousaka, H., Tokoroyama, T., Umehara, N.

    Proceedings of ISPlasma2010     page: 180   2010.3

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  154. Hardening process of CNx coatings by Ion Beam Assisted Deposition

    Saito, R.Tokoroyama, T.Fuwa, Y.Umehara, N.

    Proceedings of Mechanical Engineers Tokai Branch 59th annual meeting     page: 301-302   2010.3

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  155. Clarification of ultra low friction mechanism of CNx coating in N2 with an AFM

    Kimura, H., Tsukiyama, Y., Tokoroyama, T., Umehara, N.

    Proceedings of Mechanical Engineers Tokai Branch 59th annual meeting     page: 299-300   2010.3

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  156. たんぱく質の付着抑制の基礎研究

    大平雅明,梅原徳次,野老山貴行

    日本機械学会東海支部第41回学生員卒業研究発表講演会     page: 212-213   2010.3

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  157. イオンビームミキシング法によるCNx膜の摩擦特性と密着性に及ぼす中間層の影響

    若山幹晴,梅原徳次,上坂裕之,野老山貴行

    日本機械学会東海支部第41回学生員卒業研究発表講演会     page: 236-237   2010.3

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  158. The effect of atmosphere gas on ultra-low friction of CNx coating

    Miyahira, Y., Tokoroyama, T., Umehara, N., Fuwa, Y.

    Proceedings of Mechanical Engineers Tokai Branch 59th annual meeting     page: 295-296   2010.3

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  159. Effect of ultraviolet ray irradiation on tribological properties of diamond-like carbon coating

    Hatano, T., Tokoroyama, T., Umehara, N., Fuwa, Y.,

    Proceedings of Mechanical Engineers Tokai Branch 59th annual meeting     page: 289-290   2010.3

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  160. Friction reduction between elastomers and plastics under unlubricated condition

    Usami, K., Kousaka, H., Tokoroyama, T., Nitta, I., Umehara, N.

    Proceedings of Mechanical Engineers Tokai Branch 59th annual meeting     page: 297-298   2010.3

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  161. Ultraviolet ray irradiation effect on frictional behavior of Carbon Nitride coating

    Tokoroyama, T., Kamiya, M., Fuwa, Y., Umehara, N.

    Proceedings of ISPlasma2010     page: 152   2010.3

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  162. Effect of nitrogen content on friction coefficient of Si-containing hydrogenated Carbon Nitride film deposited by plasma-enhanced chemical vapor deposition

    Sakakibara, H., Kousaka, H., Tokoroyama, T., Umehara, N., Fuwa, Y.

    Proceedings of ISPlasma2010     page: 161   2010.3

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  163. Reduction of adhesion between steel and frilled fish protein with ultra-hydrophobic DLC Reviewed

    N. Honda, M. Kajiya, Y.-J. Jang, H. Kousaka, N. Umehara, T. Tokoroyama

    Journal of Advanced Mechanical Design, Systems, and Manufacturing   Vol. 4 ( 1 ) page: 356-364   2010.1

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  164. The evaluation of fracture energy at the interfac between grilled fish protein and metal Reviewed

    N. Honda, N. Umehara, T. Tokoroyama, R. Ohashi, A. Hanafusa

    Tribology Online   Vol. 5 ( 1 ) page: 46-51   2010.1

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  165. Photochemical fluorination for friction reduction between thermoplastic elastomers and plastics under unlubricated condition

    Usami, K., Kousaka, H., Tokoroyama, T., Nitta, I., Umehara, N.

    Proceedings of Mechanical Engineering Congress, 2009 Japan     page: 1-2   2009.10

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  166. The effect of unsaturated fatty acids on friction coefficient of Carbon Nitride coatings sliding against Si3N4 balls Reviewed

    Takayuki Tokoroyama, Yuichiro Ogawa, Noritsugu Umehara, Yoshio Fuwa

    Proceedings of World Tribology Congress Ⅳ(Kyoto)     page: 688   2009.9

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  167. Effect of surface wettability on friction behaviors of nano-patterned surface of diamond-like carbon films

    Young-Jun Jang, Jong-Joo Rha, Takayuki Tokoroyama, Hiroyuki Kousaka, Noritsugu Umehara

    Proceedings of World Tribology Congress Ⅳ(Kyoto)     page: 401   2009.9

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  168. The effect of Ultraviolet ray irradiation on frictional behavior of Carbon Nitride coating in nitrogen gas Reviewed

    Takayuki Tokoroyama, Makoto Kamiya, Yoshio Fuwa, Noritsugu Umehara

    Proceedings of World Tribology Congress Ⅳ(Kyoto)     page: 399   2009.9

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  169. The effect of Ultraviolet ray irradiation on CNx coating's tribological property Reviewed

    Takayuki Tokoroyama, Makoto Kamiya, Yoshio Fuwa, Noritsugu Umehara

    Proceedings of 2009 JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment(Tsukuba)     page: 87-88   2009.6

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  170. Superlow Friction Phenomena of Carbon Nitride Coatings Lubricated under 18 Carbon Atoms Unsaturated Fatty Acids Reviewed

    Takayuki Tokoroyama, Noritsugu Umehara, Yuichiro Ogawa, Yoshio Fuwa

    Journal of Japanese Society of Tribologists   Vol. 54 ( 6 ) page: 406-411   2009.6

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  171. Hardness improvement of DLC films deposited by plasma CVD using adamantane as precursor material

    S. Moroto, H. Kousaka, T. Tokoroyama, N. Umehara

    The 3rd International Conference on Manufacturing, Machine Design and Tribology(Jeju island)     page: 272   2009.6

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  172. AFM Scratchi Test for the Clarification of Ultra Low Friction Mechanism of CNx Coating

    N. Kimura, Y. Tsukiyama, T. Tokoroyama, N. Umehara

    The 3rd International Conference on Manufacturing, Machine Design and Tribology(Jeju island)     page: 158   2009.6

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  173. Effect of Thickness on Frictional Properties of CNx

    R. Saito, T. Tokoroyama, N. Umehara, Y. Fuwa

    The 3rd International Conference on Manufacturing, Machine Design and Tribology(Jeju island)     page: 156   2009.6

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  174. Improvement of Tribological Properties of Diamond-like Catbon Coating with Ultraviolet Ray Irradiation

    T. Hatano, T. Tokoroyama, Y. Fuwa, N. Umehara

    The 3rd International Conference on Manufacturing, Machine Design and Tribology(Jeju island)     page: 155   2009.6

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  175. Ultra-low Friction Mechanism of CNx Coating in Nitrogen

    Y. Miyahira, T. Tokoroyama, H. Kousaka, N. Umehara

    The 3rd International Conference on Manufacturing, Machine Design and Tribology(Jeju island)     page: 152   2009.6

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  176. Photochemical Fluorination for Friction Reduction between Thermoplastic Elastomers and Plastics under Unlubricated Condition

    K. Usami, H. Kousaka, T. Tokoroyama, I. Nitta, N. Umehara

    The 3rd International Conference on Manufacturing, Machine Design and Tribology(Jeju island)     page: 151   2009.6

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  177. Ultraviolet Ray Irradiation Effect on Frictional Property of Carbon Nitride Coating

    T. Tokoroyama, M. Kamiya, Y. Fuwa, N. Umehara

    The 3rd International Conference on Manufacturing, Machine Design and Tribology(Jeju island)     page: 149   2009.6

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  178. Influence of the Carbon-Overcoat on CNx Coating for the Friction and Wear Properties Reviewed

    Huaipeng WANG, Takayuki TOKOROYAMA, Noritsugu UMEHARA, and Yoshio FUWA

    Transactions of the Japan Society of Mechanical Engineers, Series C   Vol. 75 ( 754 ) page: 1859-1865   2009.6

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  179. The influence of micro-grooves for friction dependant on sliding velocity in slide bearing under oil lubrication Reviewed

    Shotaro OZU, Takayuki TOKOROYAMA, Atsushi KORENAGA, Shinya SASAKI and Noritsugu UMEHARA

    Transactions of the Japan Society of Mechanical Engineers, Series C   Vol. 75 ( 754 ) page: 1866-1871   2009.6

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  180. Ultraviolet Ray Irradiation to Topmost Layer of CNx Coating to Chang the Frictional Characteristics

    Takayuki Tokoroyama, Makoto Kamiya, Noritsugu Umehara, Yoshio Fuwa

        page: 223-224   2009.5

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  181. Superlow friction with CNx coating under oil lubrication Reviewed

    Yuichiro Ogawa, Takayuki Tokoroyama, Noritsugu Umehara, Yoshio Fuwa

    Transactions of the Japan Society of Mechanical Engineers, Series C   Vol. 75 ( 752 ) page: 1088-1093   2009.4

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  182. Influence of Ultraviolet irradiation on CNx coating's tribological characteristics Reviewed

    Makoto Kamiya, Takayuki Tokoroyama, Yoshio Fuwa, Noritsugu Umehara

        page: 199-200   2009.3

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  183. Control of friction and wear properties of CNx coatings with rising temperature in ambient air Reviewed

    Yuya Yoshikawa, Takayuki Tokoroyama, Noritsugu Umehara

    Transactions of the Japan Society of Mechanical Engineers, Series C   Vol. 74 ( 747 ) page: 2791-2796   2008.11

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  184. Basic study of friction reduction between thermoplastic elastomers and plastics under unlubricated condition

    Keisuke Usami, Hiroyuki Kousaka, Noritsugu Umehara, Takayuki Tokoroyama

        page: 191-192   2008.9

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  185. Superlow friction phenomena of CNx coating under unsaturated fatty acids slid against Si3N4 ball

    Takayuki Tokoroyama, Yuichiro Ogawa, Noritsugu Umehara, Yoshio Fuwa

        page: 203-204   2008.9

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  186. The evaluation of fracture energy at the interface between grilled fish protein and metal

    Yuki Miyahira, Naoko Honda, Noritsugu Umehara, Takayuki Tokoroyama

        page: 457-458   2008.9

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  187. Tribological properties in nitrogen gas of carbon nitride films deposited by plasma CVD

    Yoshiyasu Tamanaha, Hiroyuki Kousaka, Noritsugu Umehara, Takayuki Tokoroyama

        page: 189-190   2008.9

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  188. Running-in behavior in sliding contact between DLC coated surface and lead-free metal with low-viscosity lubricant

    M. GOTO, M. NONOGAKI, T. TOKOROYAMA, T. NAKAHARA

    Institution of Mechanical Engineers     page: 1-4   2008.7

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  189. Tribological properties of Carbon Nitride coating sliding under several surface-active agent

    Takayuki Tokoroyama, Yuichiro Ogawa, Noritsugu Umehara, Yoshio Fuwa

    Proceedings of JAST Tribology Conference Tokyo, May 2008     page: 243-244   2008.5

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  190. *In Situ Analysis of the Tribochemical Reaction of CNx by FTIR Reviewed

    Shingo Kanda, Takayuki Tokoroyama, Noritsugu Umehara, Yoshio Fuwa

    Tribology Online   Vol. 3 ( 2 ) page: 100-104   2008.4

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    Carbon Nitride (CNx) coating was reported to show a superlow friction coefficient when it slid against a Si3N4 ball in nitrogen gas at atmospheric pressure. This superlow friction phenomenon occurred after a number of sliding cycles, in the so-called running-in period, due to the nitrogen atom desorption from the topmost CNx coating surface; its the surface became a graphite-like layer, and a transfer layer was formed on the counter material surface. However, a friction test and surface analysis should be conducted simultaneously, when detailed frictional phenomena including functional groups are observed on the topmost CNx surface. It was supposed that several functional groups were adsorbed on the topmost surface of the carbon system coating when the specimen was withdrawn from the synthesis chamber. In this study, we constructed a friction test apparatus in a FTIR analytic chamber to conduct friction tests and surface analysis without taking the friction test chamber out of the analytical chamber. The analysis results of 1500 cycles each indicated that the -OH or -NH functional group gradually increased with the number of sliding cycles. However, the group decreased suddenly as the friction coefficient decreased. Finally, these kinds of functional groups were not detected when the CNx coating showed superlow friction phenomena.

  191. Tribological behavior of CNx coating at elevated temperatures in ambient air

    Yuya Yoshikawa, Takayuki Tokoroyama, Noritsugu Umehara

        page: 155-156   2008.4

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  192. The effect of amorphous Carbon overcoat on tribological property of CNx coating

    Wang Huaipeng, Takayuki Tokoroyama, Yoshio Fuwa, Noritsugu Umehara

        page: 159-160   2008.3

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  193. プラズマCVDで成膜された窒化炭素膜の窒素雰囲気中摩擦特性

    玉那覇喜保,上坂裕之,野老山貴行,梅原徳次

    第55回応用物理学関係連合講演会講演予稿集(日本大学船橋)   Vol. 2   page: 605   2008.3

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  194. Strength at the interface of aligned carbon nanotube film produced by surface decomposition of SiC

    Yosuke Tsukiyama, Emmanuel Audras, Takayuki Tokoroyama, Michiko Kusunoki, Noritsugu Umehara

        page: 167-168   2008.3

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  195. Tribological behavior of CNx coating at elevated temperatures in ambient air

    Yuya Yoshikawa, Takayuki Tokoroyama, Noritsugu Umehara

        page: 161-162   2008.3

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  196. Super low friction with CNx coating under oil lubrication

    Yuichiro Ogawa, Takayuki Tokoroyama, Noritsugu Umehara, Yoshio Fuwa

        page: 155-156   2008.3

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  197. In-situ analysis of the tribochemical reaction of CNx by FTIR

    Shingo Kanda, Takayuki Tokoroyama, Noritsugu Umehara, Yoshio Fuwa

        page: 157-158   2008.3

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  198. Evaluating Shaver Sharpness by Measuring the Pulling Force on Artificial Hair Reviewed

    T. Tokoroyama, Norhaswira MOHD, Noritsugu UMEHARA

    Journal of Advanced Mechanical Design, Systems, and Manufacturing   Vol. 1 ( 5 ) page: 661-668   2007.11

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  199. Sharpness evaluation method by pulling force measurement of artificial hair into shaver

    Takayuki TOKOROYAMA, Norhaswira MOHD, Noritsugu UMEHARA

    Proceedings of ABrasive TEchnology Conference 2007     page: 205-206   2007.9

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    Authorship:Lead author   Language:Japanese  

  200. A consideration on the wear mechanism of DLC film sliding against soft metals

    H. Nobuki, M. Goto, T. Tokoroyama, T. Ikari

    Proceedings of JAST Tribology Conference Saga, September 2007     page: 85-86   2007.9

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  201. A study of the frictional products on CNx surface sliding against soft metals by Auger electron spectroscopy

    K. Matsumoto, M. Goto, T. Tokoroyama, T. Ikari

    Proceedings of JAST Tribology Conference Saga, September 2007     page: 203-204   2007.9

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  202. In situ analysis of the tribochemical reaction of CNx by FT-IR

    T. Tokoroyama, S. Kanda, N. Umehara, Y. Fuwa

    Proceedings of JAST Tribology Conference Saga, September 2007     page: 201-202   2007.9

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  203. Influence of the thickness of carbon overcoat on CNx coating for the friction properties

    H.P. Wang, T. Tokoroyama, N. Umehara, and Y. Fuwa

    Proceedings of JAST Tribology Conference Saga, September 2007     page: 199-200   2007.9

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  204. Effect of nitrogen atoms included in CNx coatings on friction sliding against Si3N4 ball in nitrogen gas

    Takayuki TOKOROYAMA, Noritsugu UMEHARA

    Proceedings of Mechanical Engineering Congress, 2007 Japan Vol.7   Vol. 7   page: 249-250   2007.9

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  205. The Effect of Nitrogen Atoms Included in CNx coating on Friction Sliding Against Si3N4 Ball in Nitrogen Gas

    T. Tokoroyama, M. Goto, F. Honda, N. Umehara

    Proceedings of International Conference on Metallurgical Coatings and Thin Films(San Diego)     page: 38   2007.4

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  206. Measurement of Shearing Strength at the Interface of Carbon Nanotube Film Synthesized by Surface Decomposition of Silicon Carbide

    Emmanuel Audras, Yosuke Tsukiyama, Takayuki Tokoroyama, Michiko Kusunoki, and Noritsugu Umehara

    Proceedings of International Conference of Manufacturing, Machine Design and Tribology 2007(Korea)     page: 57   2007

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  207. The Evaluation of Fracture Energy at the Interface between Baked Fish Protein and Metal

    Naoko Honda, Takayuki Tokoroyama, Noritsugu Umehara, Ryusei Ohashi, Akira Hanafusa

    International Conference of Manufacturing, Machine Design and Tribology 2007(Korea)     page: 64   2007

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  208. Sharpness Evaluation Method by Pulling Force Measurement of Artificial Hair into Shaver

    Takayuki Tokoroyama, Norhaswira Mohd, Noritsugu Umehara

    International Conference of Manufacturing, Machine Design and Tribology 2007(Korea)     page: 63   2007

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  209. Tribology Properties of Carbon-Overcoated CNx

    Huaipeng Wang, Takayuki Tokoroyama, Noritsugu Umehara, Yoshio Fuwa

    International Conference of Manufacturing, Machine Design and Tribology 2007(Korea)     page: 58   2007

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  210. Surface Analysis of Friction Scar of CNx with FT-IR

    Shingo Kanda, Takayuki Tokoroyama, Yoshio Fuwa, Noritsugu Umehara

    International Conference of Manufacturing, Machine Design and Tribology 2007(Korea)     page: 57   2007

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  211. *Effect of Nitrogen atoms desorption on the friction of the CNx coating against Si3N4 ball in Nitrogen gas Reviewed

    Takayuki Tokoroyama, Minoru Goto, Noritsugu Umehara, Takashi Nakamura, Fumihiro Honda

    Tribology Letters   Vol. 22 ( 3 ) page: 215-220   2006.6

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    Phase transition of CNx coatings by sliding against a Si3N4 ball has been studied by Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) to understand this super-low friction phenomena in N2. A pin-on-disk type tribometer was constructed to determine the tribological properties of this coating when sliding against a Si3N4 ball in N2. The analytical results by AES and XPS showed that the nitrogen atoms desorbed from the top layers of the coating, and that the layers changed to a graphite-like structure without nitrogen during a friction coefficient decrease to lower than 0.01. The structural transition of CNx is discussed in this paper.

  212. Friction of CNx coating against Si3N4 ball in oil

    Y. Ogawa, T. Tokoroyama, N. Umehara, Y. Fuwa

    Proceedings of The Third Asia International Conference on Tribology(Kanazawa)     page: 299-300   2006

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  213. Effect of Nitrogen desorption on the friction of the CNx coating against Si3N4 ball in Nitrogen gas

    T. Tokoroyama, N. Umehara, M. Goto, F. Honda

    Proceedings of The Third Asia International Conference on Tribology(Kanazawa)     page: 769-770   2006

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  214. Wear properties and its mechanism of CNT on SiC

    Y. Tsukiyama, T. Tokoroyama, N. Umehara, M. Kusunoki, H. Usami

    Proceedings of The Third Asia International Conference on Tribology(Kanazawa)     page: 351-352   2006

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  215. Effect of the applied electric field on the friction of the CNx coating against Si3N4 ball in air

    Y. Yoshikawa, T. Tokoroyama, N. Umehara

    Proceedings of The Third Asia International Conference on Tribology(Kanazawa)     page: 349-350   2006

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  216. CNx膜を有するスラスト気体・すべり軸受の摩擦摩耗特性

    冨田博嗣,角田耕一,野老山貴行,梅原徳次

    日本トライボロジー学会トライボロジー会議予稿集(春東京)     page: 347-348   2006

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  217. 砥粒を分散した粒子分散型流体を用いた電場援用研磨の基礎研究

    野老山貴行,城間博行,赤上陽一,梅原徳次

    日本機械学会第6回生産加工・工作機械部門講演会講演論文集(逗子)     page: 231-232   2006

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  218. 砥粒を分散した粒子分散型流体を用いた電場援用研磨の基礎研究

    野老山貴行,城間博行,赤上陽一,梅原徳次

    砥粒加工学会学術講演会論文集(横須賀)     page: 293-296   2006

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  219. AFMを用いたCNx膜のSi3N4探針との付着力に及ぼす窒素中摩擦の影響

    野老山貴行,梅原徳次

    日本機械学会第6回機素潤滑設計部門講演会論文集(宮城松島)     page: 165-166   2006

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  220. The effect of environmental gas on friction coefficient of CNx coatings and maximum concentration of O2 for the realization of ultra-low friction Reviewed

    Takayuki Tokoroyama, Takashi Nakamura, Noritsugu Umehara, Hirotsugu Tomita, Yukinori Takenoshita

    Journal of Japanese Society of Tribologists   Vol. 50 ( 9 ) page: 683-689   2005.9

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    It was reported that CNx showed super-low friction coefficient less than 0.01 in N2. In this study, to clarify the possibility of super-low friction of CNx in air, friction tests in N2, O2, CO2, and Ar were carried out. Moreover, friction tests in each constant concentration of O2 and increasing concentration of O2 from 0 to 21% or decreasing from 21 to 0% were carried out to know the maximum concentration of O2 in ambient gas. Main results are the followings: (1) In the case of friction test carried out in O2, the transfer layer showed 7 times higher oxygen concentration than the transfer layer formed in N2. On the other hand, in the case of transfer layer indicating low concentration of oxygen, friction coefficient was lower than 0.05. (2) In order to obtain super-low friction coefficient less than 0.01, it was necessary that at least transfer layer should be formed in N2 (contained concentration of O2 lower than 0.01%) and the concentration of O2 at friction environment kept less than 2.0%.

  221. Effect of the shear strength of coating of CNx on friction sliding against Si3N4 pin in Nitrogen

    Takayuki Tokoroyama, Noritsugu Umehara, Yoshiro Fuwa

    Proceedings of World Tribology Congress Ⅲ(Washington D.C.)     page: 33   2005

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  222. Theoretical friction coefficient of CNx in nitrogen on the basis of the shearing strength of surface layer,

    Takayuki Tokoroyama, Takashi Nakamura, Noritsugu Umehara

    Proceedings of the International Tribology Conference Kobe 2005     page: 200-201   2005

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  223. Measurement of adhesive and shearing strength on the surface layer of CNx coating with micro scratch

    Takayuki Tokoroyama, Takashi Nakamura, Noritsugu Umehara

    Proceedings of International Conference on Manufacturing machine Design and Tribology 2005 Seoul     page: TTM-201   2005

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  224. Tribological properties of DLC films prepared from different raw materials Reviewed

    Masahiro Suzuki, Seiichiro Hironaka, Hideyuki Toyoshima, Takayuki Tokoroyama, Akihiro Tanaka

    Journal of the Surface Science Society of Japan   Vol. 25 ( 4 ) page: 232-237   2004.4

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    The diamond-like carbon (DLC) films were prepared from methane, benzene and toluene by thermal electron exited plasma CVD method. Micro-laser Raman analysis of three films showed a typical spectrum of DLC film. The hardness and hydrogen content of the film were 11-25 GPa and 23-29 at %, respectively. The tribological properties of three DLC films were investigated using a scratch tester, a Bowden-Leben type friction tester and a ball-on-disk type reciprocationg friction tester. The effects of raw materials on the tribological properties were confirmed. The difference in tribological properties of these three films seems to be related with their hardness. That is, the friction coefficient of the DLC film with low hardness was lower than that of the film with high hardness. On the other hand, when the hardness was increased, the specific wear rate of the DLC films appeared to decrease. The transferred films formed on mating material surfaces are supposed to play significant roles in the tribological properties of the DLC films.

  225. 窒化炭素膜のライフサイクルアセスメント

    野老山貴行,モハマドズハイリ,梅原徳次,冨田博嗣,竹之下雪徳,小沢秀夫

    日本機械学会第4回機素潤滑設計部門講演会講演論文集(岩手繋)     page: 203-204   2004

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  226. CNx膜の超低摩擦発現メカニズムへの軟質薄膜摩擦理論の適用

    野老山貴行,梅原徳次

    日本機械学会2004年度年次大会講演論文集(Ⅶ)(北海道)     page: 327-328   2004

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  227. Effect of surface roughness and transfer layer of mating ceramic parts for ultra low friction phenomena in sliding between CNx and ceramics Reviewed

    Takayuki Tokoroyama, Noritsugu Umehara, Hirotsugu Tomita, Yukinori Takenoshita

    Transactions of the Japan Society of Mechanical Engineers, Series C   Vol. 69 ( 686 ) page: 2824-2829   2003.10

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    In order to know the running-in process for ultra low friction of CNx sliding against Si3N4 balls in N2, the effect of surface roughness of balls on friction coefficient was investigated. As results, it was shown that friction coefficient for all of Si3N4 balls decreased with sliding cycles and reached to the specific minimum values less than 0.05. For friction coefficient less than 0.01, smooth surface of ball with 30nm Ry as initial surface roughness was necessary. Smooth surfaces of CNx coating and Si3N4 ball after running-in provide ultra low friction after the transfer of tiny amount of CNx to Si3N4 ball and the generating of thin and uniform transfer film on balls.

  228. CNx膜の窒素中超低摩擦現象に及ぼす相手材へのCNx成膜の影響

    野老山貴行,梅原徳次,広中清一郎

    日本機械学会2003年度年次大会講演論文集(徳島)     page: 135-136   2003

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  229. CNx膜の摩擦特性に及ぼす雰囲気ガスの影響

    野老山貴行,梅原徳次,冨田博嗣,竹之下雪徳

    日本トライボロジー学会トライボロジー会議予稿集(秋新潟)     page: 265-266   2003

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  230. CNx膜を有する気体・すべり軸受のすべり摩擦における負荷荷重の影響

    冨田博嗣,角田耕一,小沢秀夫,竹之下雪徳,野老山貴行,梅原徳次

    日本トライボロジー学会トライボロジー会議予稿集(春東京)     page: 329-330   2003

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  231. イオンビーム法により種種の原料から作製したDLC膜の摩擦特性

    豊嶋秀幸,広中清一郎,野老山貴行,鈴木雅裕,田中章浩

    日本トライボロジー学会トライボロジー会議予稿集(春東京)     page: 257-258   2003

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  232. CNx膜をコーティングしたスラスト軸受の窒素中における超低摩擦現象

    梅原徳次,野老山貴行,冨田博嗣,竹之下雪徳

    日本トライボロジー学会トライボロジー会議予稿集(秋仙台)     page: 79-80   2002

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  233. Effect of surface roughness of mating surface and transfer layer on friction between a-CNx and Si3N4 in nitrogen Reviewed

    Noritsugu Umehara, Takayuki Tokoroyama, Hirotsugu Tomita, Yukinori Takenoshita

    Proceedings of The Second Asia International Conference on Tribology     page: 155-156   2002

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    During the sliding between a-CNx and Si3N4, applying nitrogen as environmental gas provided very low friction as the level of 0.01 in friction coefficient. In order to know the effect of the running-in process on the reduction of the friction, the effect of surface roughness of mating surface on friction coefficient. Friction coefficient after running-in was proportional to the Ry value of wear scar of ball. Also smooth thin transferred layer was observed on the wear scar of balls with an AFM after sliding test. Those results showed the smoothing of wear scar of ball, the generating of the transferred layer from CNx was necessary for low friction.

  234. CNx膜を有する気体・すべり軸受における超低摩擦現象

    冨田博嗣,角田耕一,小沢秀夫,竹之下雪徳,野老山貴行,梅原徳次

    日本トライボロジー学会トライボロジー会議予稿集(秋仙台)     page: 241-242   2002

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  235. Effect of surface roughness of mating surface and transfer layer on friction between a-CNx and Si3N4 in nitrogen

    Noritsugu Umehara, Takayuki Tokoroyama, Hirotsugu Tomita, Yukinori Takenoshita

    Proceedings of The Second Asia International Conference on Tribology(Jeju island)     page: 155-156   2002

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    Language:English  

    During the sliding between a-CNx and Si3N4, applying nitrogen as environmental gas provided very low friction as the level of 0.01 in friction coefficient. In order to know the effect of the running-in process on the reduction of the friction, the effect of surface roughness of mating surface on friction coefficient. Friction coefficient after running-in was proportional to the Ry value of wear scar of ball. Also smooth thin transferred layer was observed on the wear scar of balls with an AFM after sliding test. Those results showed the smoothing of wear scar of ball, the generating of the transferred layer from CNx was necessary for low friction.

  236. Effect of surfaace roughness of mating ceramic parts for ultralow friction phenomena in sliding between CNx and ceramics

    Takayuki Tokoroyama, Noritsugu Umehara

    JSME Millennium   ( 3 ) page: 115-116   2001.8

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Books 3

  1. Advanced Tribology and Applications

    Shigeyuki Mori, Piero Gavezotti, Fabio Riganti, Hiroyuki Soma, Hideto Kamimura, Ichiro Minami, Satoshi Ogano, Hiroshi Komiya, Hiroshi Kimura, Junichi Shibata, Yuji Shitara, Syojiro Miyake, Akihiro Tanaka, Masahito Ban, Noritsugu Umehara, Takayuki Tokoroyama, Fumihiro Honda, Shuichi Watanabe, Seiichiro Hironaka, Miki Nakano, Takao Ishida, Masahiro Kawamura, Yoshiteru Yasuda, Toshihiko Ichihashi, Toshiaki Wakabayashi, Mineo Suzuki, Shingo Obara, Kazunori Umeda, Takayuki Yamamoto, Yasuhisa Ando( Role: Joint author)

    2007.6 

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    Language:Japanese

  2. エレクトロニクス用途におけるガラスの超精密加工【技術全集】

    松村隆,安永暢男,宇根篤暢,久米保,慮毅申,梅原徳次,野老山貴行,城間博行,平本靖男,小泉貴司,江田弘,清水淳,生田徹也,東江眞一,田牧純一,吉野雅彦,林祐嗣,山崎亨,大澤映二,長谷川明伸,杉岡幸次,早崎芳夫,本間剛,小松高行,井本克之,割澤伸一,松井多志,小路谷将範,勝木雅英,鎌野利尚,白石善裕,井上明久,藤田和孝,鈴木浩文,福田達也,中谷達行,岡本圭司,川名淳雄,山崎隆徳,齊藤拓,河村能人,北嶋雅之,竹田諭司,大久保雅章,山本俊昭,大石祐一,床嶋祐人,松岡純,長島廉仁,加藤保真( Role: Joint author)

    技術情報協会  2008.3 

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  3. 機械屋のための分析装置ガイドブック

    吉野雅彦,梅原徳次,近藤行人,楊明,山本貴富喜,赤上陽一,久住孝幸,品川一成,新保實,大竹尚登,源関聡,早川邦夫,野崎智洋,津島将司,鈴木清一,黒川悠,鈴木俊明,山中晃徳,松村隆,月山陽介,益満秀治,安田公一,山崎敬久,齋藤卓志,平山朋子,中村吉男,野老山貴行,坂井田喜久,上坂裕之,柏谷智,井上裕嗣( Role: Joint author)

    日本塑性加工学会  2012 

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Presentations 2

  1. CNx膜による表面改質と超低摩擦の発現

    第7回表面改質夏季フォーラム 

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    Event date: 2006.8

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  2. 窒化炭素膜の摩擦特性に及ぼす極表面窒素含有量の影響

    平成18年度第1回固体潤滑研究会 

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    Event date: 2006.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

Works 5

  1. CNxコーティングの超低摩擦特性実用化のための研究動向

    2009.4

  2. Tribology of Carbonaceous Thin Films

    2009.1

  3. トライボロジーとその評価方法及び窒化炭素膜の無潤滑超低摩擦

    2008.5
    -
    2008

  4. CNx膜によるすべり軸受の低摩擦化

    2005.8

  5. CNx膜(窒化炭素膜)軸受実用化のための応用研究

    2005.4

Research Project for Joint Research, Competitive Funding, etc. 17

  1. マザック財団高度生産システム研究助成

    2017.11

    学内共同研究 

  2. 科学技術体験コース

    2017.9

    さくらサイエンスプラン 

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    Grant type:Competitive

  3. マザック財団高度精算システム研究助成

    2016.11 - 2017.9

    学内共同研究 

  4. 工作機械技術振興財団研究助成

    2016.7 - 2017.6

    学内共同研究 

  5. 日本科学協会海外発表促進助成

    2016.7

    学内共同研究 

  6. 秋田大学学術支援基金援助

    2016.4 - 2017.3

    学内共同研究 

  7. 中部電気利用基礎研究助成

    2016.4 - 2017.3

    学内共同研究 

  8. 天田財団研究助成

    2015.10

    学内共同研究 

  9. 秋田県産学官連携促進事業(フィージビリティスタディ支援事業)

    2015.7 - 2016.3

    学内共同研究 

  10. NSKメカトロニクス技術高度化財団研究助成

    2015.4

    学内共同研究 

  11. 公益財団法人JKA自転車等機械工業振興事業に関する補助事業

    2014.4 - 2015.3

    学内共同研究 

  12. グローバルCOEプログラムによる若手研究者研究活動経費

    2012.4 - 2013.3

    学内共同研究 

  13. 大澤科学技術財団助成

    2011.4 - 2012.3

    出資金による受託研究 

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    紫外線照射を用いたDLC膜の低摩擦表面処理手法の開発

  14. シーズ発掘

    2008.4 - 2009.3

    出資金による受託研究 

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    炭素系硬質薄膜のFTIRその場分析手法を用いた表面酸化に伴う摩耗評価試験方法の新規開発

  15. 太田工学研究国際交流助成

    2007.4

    出資金による受託研究 

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    ICMCTF2007への参加

  16. 名古屋大学学術振興基金

    2006.4 - 2014.3

    学内共同研究 

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    超低摩擦無潤滑すべり軸受開発のための配向性窒化炭素膜の応用

  17. COEプログラム若手研究者研究活動経費

    2006.4 - 2014.3

    学内共同研究 

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KAKENHI (Grants-in-Aid for Scientific Research) 11

  1. 超低摩擦機械要素実現のための窒化炭素膜超低凝着表面層の測定及び極性基の同定

    2006.4 - 2008.3

    科学研究費補助金  若手研究(スタートアップ),課題番号:18860036

    野老山 貴行

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    Authorship:Principal investigator 

  2. 紫外線照射による窒化炭素膜超低摩擦発現時のなじみ過程の推進と対面圧の向上

    2008.4 - 2009.3

    科学研究費補助金  若手研究(B)

    野老山貴行

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    Authorship:Principal investigator 

  3. 繰り返し衝突貧潤滑摩擦摩耗面の高耐摩耗性・低摩擦表面創製のためのDLC膜設計指針

    2013.4 - 2016.3

    科学研究費補助金  基盤研究(C)

    野老山貴行

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    Authorship:Principal investigator 

  4. 蛍光発光標識法と摩擦面直接観察によるDLC膜の摩耗に及ぼす潤滑油添加剤の影響解明

    2016.4 - 2019.3

    科学研究費補助金  基盤研究(B)

    野老山貴行

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    Authorship:Principal investigator 

  5. PCR法を用いた増幅DNAによる潤滑油代替材料創製への挑戦

    2017.4 - 2019.3

    科学研究費補助金  研究成果公開促進費 (研究成果公開発表)

    野老山貴行

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    Authorship:Principal investigator 

  6. The challenge of frost generation preventing surface by using high thermal conductive micro-plastic texturing

    Grant number:20K20530  2020.7 - 2023.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Pioneering)

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    Authorship:Principal investigator 

    Grant amount:\25740000 ( Direct Cost: \19800000 、 Indirect Cost:\5940000 )

  7. 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) 

  8. The challenge of an alternative lubrication material synthesizing by multiplying DNA under PCR method

    Grant number:17K18818  2017.6 - 2019.3

    Grant-in-Aid for Challenging Research (Exploratory)

    Tokoroyama Takayuki

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    Authorship:Principal investigator 

    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

    To obtain artificial lubricant, DNA oriented from flora is expected to be alternative material of lubricant. The polymerase chain reaction (PCR) is one of the potential method to increase molecule. It was expected that in-situ observation of those DNA included lubricant with friction test could unearth the effect of those DNA on reduction of friction coefficient. Some of functional group is expected to absorb on a glass surface, then it acts to reduce friction force. To clarify the effect of those DNA on reduction of friction force, measurement of those absorbed materials by ultra-violet light is potential method to proof an existence of those absorbed molecule.

  9. The effect of oil aditives on the wear of DLC and its in-situ obserbation by fluorescent light emission method

    Grant number:16H04252  2016.4 - 2019.3

    Tokoroyama Takayuki

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    Authorship:Principal investigator 

    Grant amount:\17940000 ( Direct Cost: \13800000 、 Indirect Cost:\4140000 )

    To clarify an effect of oil additives on wear of Diamond-Like Carbon under lubrication, a friction test with in-situ observation to the contact point by using fluorescent stain method for imitation wear powders such as MoDTC, and measurement of DLC wear amount was conducted. As a result, imitation wear powders which diameter less than 1 um could enter into the contact point even if it was boundary lubrication condition, then those situation could enhance the wear of DLC. Especially, Mo2C had abrasive effect to enhance wear of DLC and also the MoDTC itself had wear acceleration effect. The mechanism of wear acceleration by MoDTC was assumed to be classified to chemical wear by Raman analysis.

  10. Fabrication of metallic nanocoil networks using mechanical self-assembly and its application to transparent functional films

    Grant number:15H03887  2015.4 - 2018.3

    MURAOKA Mikio

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    Authorship:Coinvestigator(s) 

    This study provided a fundamental technique of fabricating metallic nanocoil (NC) networks. The technique for mass-fabricating metallic NCs by assisting the release of residual stress, was originally developed by our research group, is referred to as “mechanical self-assembly”. Thermal decomposition of electrospun resin nanofibers (NFs) was used for releasing the inhomogeneous residual strain in the biased thick metal film coating on the NF. The process conditions were optimized to reduce the coil diameters down to around 1 micrometer. Transparent resin films containing Pt NC networks ware demonstrated for stretchable electrode and electromagnetic wave absorber, which would contribute to the information-technique-based society with safety.

  11. Development of Smart Tribosystem with Friction Induced Transformed Thin Layers

    Grant number:25220902  2013.5 - 2018.3

    Umehara Noritsugu

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    Authorship:Coinvestigator(s) 

    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.

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Teaching Experience (On-campus) 4

  1. 生産プロセス工学特論

    2017

  2. 計算機ソフトウェア第1

    2017

  3. Design Practice 1

    2017

  4. 機械・航空工学科設計製図第1

    2017