Faculty Profiles - TOKOROYAMA, Takayuki

Papers - TOKOROYAMA, Takayuki

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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

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

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

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

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

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

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. 79 ( 803 ) page： 2506 - 2516 2013

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

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

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

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

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

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 - 680 2010.4

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

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

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

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

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.

The development of B/Cr co-doped DLC coating by FCVA deposition system and its tribological properties at 300 °C Reviewed

Zhang, RX; Lee, WY; Umehara, N; Tokoroyama, T; Murashima, M; Takimoto, Y

SURFACE & COATINGS TECHNOLOGY Vol. 487 2024.7

Active control of Lubricant Flow Using Dielectrophoresis and Its Effect on Friction Reduction Reviewed

Murashima, M; Aono, K; Umehara, N; Tokoroyama, T; Lee, WY

TRIBOLOGY ONLINE Vol. 18 ( 6 ) page： 292 - 301 2023

Tribocatalytic Reaction Enabled by TiO<sub>2</sub> Nanoparticle for MoDTC-Derived Tribofilm Formation at ta-C/Steel Contact Reviewed International coauthorship

Matsukawa, D; Park, JH; Lee, WY; Tokoroyama, T; Kim, JI; Ichino, R; Umehara, N

COATINGS Vol. 14 ( 6 ) 2024.6

Effect of PAO-4 and MoDTC plus ZnDTP oil additive lubricants on the tribological performance of novel tetrahedral amorphous carbon (ta-C) coatings Reviewed International coauthorship

Mustafa, MMB; Umehara, N; Tokoroyama, T; Murashima, M; Utsumi, Y; Moriguchi, H; Shibata, A

TRIBOLOGY INTERNATIONAL Vol. 193 2024.5

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Papers - TOKOROYAMA, Takayuki