Papers - TOKOROYAMA, Takayuki

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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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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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. 307 ( 1-2 ) page： 1 - 9   2013.9

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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. 8 ( 4 ) page： 257 - 264   2013.9

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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. 65   page： 270 - 277   2013.9

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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. 65   page： 286 - 294   2013.9

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

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. 65   page： 265 - 269   2013

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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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Effect of Water on Wear of DLC Coatings in High Temperature and Pressurized Ethanol Reviewed

Tokoroyama, T; Horikawa, S; Mimata, J; Umehara, N; Murashima, M

TRIBOLOGY LETTERS   Vol. 72 ( 4 )   2024.12

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

DOI： 10.1007/s11249-024-01910-z

Web of Science

Clarification of the effects of adsorption films of ester-blended oil on friction by in situ reflectance spectroscopy Reviewed

Hirata, K; Murashima, M; Umehara, N; Tokoroyama, T; Hashizume, N; Lee, WY; Takekawa, D; Narita, K

TRIBOLOGY INTERNATIONAL   Vol. 187   2023.9

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DOI： 10.1016/j.triboint.2023.108718

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Friction characteristics of amorphous carbon coating against various 3<i>d</i>-transition metals Reviewed

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

TRIBOLOGY INTERNATIONAL   Vol. 174   2022.10

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DOI： 10.1016/j.triboint.2022.107690

Web of Science

New in situ superlow-friction method for nitrogen-containing diamond-like carbon coatings using dielectric barrier discharge treatment in ambient air Reviewed

Wu, WJ; Murashima, M; Saso, T; Tokoroyama, T; Lee, WY; Kousaka, H; Umehara, N

TRIBOLOGY INTERNATIONAL   Vol. 174   2022.10

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DOI： 10.1016/j.triboint.2022.107749

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

Yamada, Y; Murashima, M; Umehara, N; Tokoroyama, T; Lee, WY; Takamatsu, H; Tanaka, Y; Utsumi, Y

TRIBOLOGY INTERNATIONAL   Vol. 169   2022.5

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DOI： 10.1016/j.triboint.2022.107486

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

Lee, W; Murashima, M; Umehara, N; Tokoroyama, T; Horaguchi, N; Ishimoto, T

TRIBOLOGY INTERNATIONAL   Vol. 168   2022.4

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

DOI： 10.1016/j.triboint.2021.107404

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

Murashima, M; Oyama, S; Kousaka, H; Tokoroyama, T; Lee, WY; Umehara, N

TRIBOLOGY INTERNATIONAL   Vol. 165   2022.1

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DOI： 10.1016/j.triboint.2021.107306

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

Hashizume, N; Murashima, M; Umehara, N; Tokoroyama, T; Lee, WY

TRIBOLOGY INTERNATIONAL   Vol. 162   2021.10

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

DOI： 10.1016/j.triboint.2021.107128

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

Murashima, M; Imaizumi, Y; Kawaguchi, M; Umehara, N; Tokoroyama, T; Saito, T; Takeshima, M; Tsukiyama, Y; Nitta, I

JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME   Vol. 143 ( 5 )   2021.5

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

DOI： 10.1115/1.4050269

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Active friction control in lubrication condition using novel metal morphing surface Reviewed

Murashima, M; Imaizumi, Y; Murase, R; Umehara, N; Tokoroyama, T; Saito, T; Takeshima, M

TRIBOLOGY INTERNATIONAL   Vol. 156   2021.4

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DOI： 10.1016/j.triboint.2020.106827

Web of Science

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

Murashima, M; Hojo, K; Ito, S; Umehara, N; Tokoroyama, T; Takahashi, T; Imaeda, M

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

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

DOI： 10.1021/acs.langmuir.0c03435

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