Papers - TOKOROYAMA, Takayuki

Corrosion and tribological properties of ta-C/ta-C: Ta coatings: Analysis of the influence of Ta-O/Ta-C ratio Reviewed

Li, LL; Tokoroyama, T; Zhang, RX; Umehara, N

TRIBOLOGY INTERNATIONAL   Vol. 198   2024.10

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DOI： 10.1016/j.triboint.2024.109916

Web of Science

Effect of the graphite domain direction on the friction coefficient of tetrahedral amorphous carbon nitride Reviewed

Tokoroyama, T; Fujiwara, C; Murashima, M; Yamaguchi, M; Umehara, N

DIAMOND AND RELATED MATERIALS   Vol. 143   2024.3

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DOI： 10.1016/j.diamond.2024.110853

Web of Science

The 1 μm wear particles entrainment <i>in situ</i> observation via fluorescent staining silica particles by silane coupling with Rhodamine B Reviewed

Tokoroyama, T; Okashita, M; Fusetani, N; Murashima, M; Hashizume, N; Tsuboi, R; Shiomi, H; Umehara, N

FRONTIERS IN MECHANICAL ENGINEERING-SWITZERLAND   Vol. 10   2024.2

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

DOI： 10.3389/fmech.2024.1371948

Web of Science

Effects of Phosphonate Additives with Hydroxy Groups on the Tribological Properties of ta-C Coatings Under Boundary Lubrication Reviewed

Tanaka, K; Tokoroyama, T; Umehara, N; Murashima, M; Oshio, T; Yagishita, K

TRIBOLOGY LETTERS   Vol. 71 ( 2 )   2023.6

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DOI： 10.1007/s11249-023-01734-3

Web of Science

Superlubricity with Graphitization in Ti-Doped DLC/Steel Tribopair: Response on Humidity and Temperature Reviewed International coauthorship

Kim, JI; Lee, WY; Tokoroyama, T; Umehara, N

ACS APPLIED MATERIALS & INTERFACES   Vol. 15 ( 15 ) page： 19715 - 19729   2023.4

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DOI： 10.1021/acsami.3c01704

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PubMed

Long-term low-friction of Ti-overcoated and-doped DLCs: Robustly developed carbonous transfer layer with titanium Reviewed International coauthorship

Kim, JI; Lee, WY; Tokoroyama, T; Umehara, N

CARBON   Vol. 204   page： 268 - 283   2023.2

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

DOI： 10.1016/j.carbon.2022.12.012

Web of Science

The Tribological Property of a-C:H Coating with Tribolayer by Additive Having Glycerol and Phosphate Oxide Structure Reviewed

Tokoroyama, T; Tanaka, K; Kani, T; Murashima, M; Lee, WY; Umehara, N; Oshio, T; Yagishita, K

TRIBOLOGY LETTERS   Vol. 70 ( 4 )   2022.12

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DOI： 10.1007/s11249-022-01659-3

Web of Science

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

Tokoroyama, T; Tagami, Y; Murashima, M; Lee, WY; Umehara, N; Kousaka, H

TRIBOLOGY INTERNATIONAL   Vol. 168   2022.4

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DOI： 10.1016/j.triboint.2022.107450

Web of Science

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

Kassim, KAM; Tokoroyama, T; Murashima, M; Lee, WY; Umehara, N; Mustafa, MMB

TRIBOLOGY INTERNATIONAL   Vol. 159   2021.7

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DOI： 10.1016/j.triboint.2021.106944

Web of Science

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

Tokoroyama, T; Nishimoto, T; Murakami, Y; Honda, A; Mitsui, H; Terai, Y; Murashima, M; Lee, WY; Umehara, N

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

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DOI： 10.2474/trol.16.255

Web of Science

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

Kani, T; Tokoroyama, T; Umehara, N; Murashima, M; Lee, WY; Yagishita, K

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

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DOI： 10.2474/trol.16.263

Web of Science

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

Kassim, KAM; Tokoroyama, T; Murashima, M; Umehara, N

TRIBOLOGY INTERNATIONAL   Vol. 147   2020.7

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DOI： 10.1016/j.triboint.2020.106176

Web of Science

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

Lee, WY; Jang, YJ; Tokoroyama, T; Murashima, M; Umehara, N

DIAMOND AND RELATED MATERIALS   Vol. 105   2020.5

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

DOI： 10.1016/j.diamond.2020.107789

Web of Science

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

Tokoroyama, T; Murashima, M; Umehara, N

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

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DOI： 10.2474/trol.15.300

Web of Science

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

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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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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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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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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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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