Faculty Profiles - TOKOROYAMA, Takayuki

Papers - TOKOROYAMA, Takayuki

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The ta-C Hardness Effect on Wear Properties Under MoDTC Contained Boundary Lubrication Reviewed

Tokoroyama, T; Wang, S; Umehara, N; Murashima, M; Lee, WY

TRIBOLOGY LETTERS Vol. 72 ( 1 ) 2024.3

Clarification of the Effect of Surface Energy on Tribological Behavior of Two-Phase Lubricant Using Reflectance Spectroscopy and Hydrodynamic Analysis Reviewed International coauthorship

Hirata, K; Murashima, M; Umehara, N; Tokoroyama, T; Lee, WY; Hashizume, N; Sato, T; Nagata, R; Hanyuda, K; Otsuka, A; Ueda, M

TRIBOLOGY LETTERS Vol. 72 ( 1 ) 2024.3

In situ Observation of the Formation of MoDTC-Derived Tribofilm on a Bearing Steel with Different Surface Roughness by Using a Reflectance Spectroscopy and Its Effects on Friction Reviewed International coauthorship

Hashizume, N; Tokoroyama, T; Umehara, N; Murashima, M; Lee, WY; Zhang, RX; Kunisu, M; Shioji, H; Oharada, K

TRIBOLOGY LETTERS Vol. 72 ( 1 ) 2024.3

Low friction of nitrogen-doped diamond-like carbon coating due to acidic liquid film and nitrogen-doped graphite oxide generated by dielectric barrier discharge in ambient air

Wu, WJ; Murashima, M; Umehara, N; Tokoroyama, T; Zhang, RX

SURFACES AND INTERFACES Vol. 56 2025.1

The mechanism of small wear particles entrainment in friction under boundary lubrication

Tokoroyama, T; Okashita, M; Zhang, RX; Murashima, M; Tsuboi, R; Yoshida, T; Shiomi, H; Umehara, N

FRONTIERS IN MECHANICAL ENGINEERING-SWITZERLAND Vol. 10 2024.9

Clarification of the Corrosion and Frictional Behavior of Nitrogen-Doped ta-C Coating in Nitride Acid Solution

Zhang, RX; Feng, HD; Umehara, N; Tokoroyama, T

PROCEEDINGS OF ITS-IFTOMM 2024 Vol. 160 page： 13 - 22 2024

Enhancing Cutting Tool Performance through ta-C:Ta Coating for CFRP Dry Machining: Investigation of Wear Resistance and Cutting Forces

Suzuki, K; Tokoroyama, T; Takita, R; Zhang, RX; Umehara, N; Sato, S; Nishida, S

PROCEEDINGS OF ITS-IFTOMM 2024 Vol. 160 page： 159 - 167 2024

Effect of Hydrogen Doping for ta-C on Friction of ta-C:H Sliding Against Bearing Steel in High Temperature and High Vacuum

Zhang, RX; Yasuda, D; Umehara, N; Tokoroyama, T

PROCEEDINGS OF ITS-IFTOMM 2024 Vol. 160 page： 149 - 158 2024

Development of Low-Friction Technology for Treating Nitrogen-Containing Diamond-Like Carbon Coatings in Ambient Air Using Dielectric Barrier Discharge

Wu, WJ; Umehara, N; Tokoroyama, T; Murashima, M; Zhang, RX

PROCEEDINGS OF ITS-IFTOMM 2024 Vol. 160 page： 99 - 106 2024

Proposal of a model for the influence of coating area on the electric field at the tip of electrocautery for suppressing tip charring and surgical smoke generation due to blood heating

Tokoroyama, T; Oh, K; Murashima, M; Umehara, N; Yorozu, T; Uchida, J

JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING Vol. 18 ( 6 ) 2024

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

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

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

ELUCIDATION OF THE EFFECT OF MoDTC ADDITIVES IN OIL ON LOW FRICTION BY <i>IN-SITU</i> REFLECTANCE OBSERVATION

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

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

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

Umehara, N; Kitamura, T; Tokoroyama, T; Murashima, M

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

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

Miyachi, T; Nakashima, Y; Lee, W; Umehara, N; Tokoroyama, T; Murashima, M

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

Preface

Ando, Y; Tokoroyama, T

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

Application of oil palm fiber in organic brake friction composite material

Bin Abdollah, MF; Amiruddin, H; Nordin, MJ; Tokoroyama, T; Umehara, N

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

DEVELOPMENT OF FRICTION STABILIZATION CONTROL USING GENETIC ALGORITHM AND CONTACT POINT CONTROL METHOD

Yamada, T; Murashima, M; Umehara, N; Tokoroyama, T

PROCEEDINGS OF THE JSME 2020 CONFERENCE ON LEADING EDGE MANUFACTURING/MATERIALS AND PROCESSING, LEMP2020 2020

TRIBOLOGICAL PROPERTIES BETWEEN A-C:H COATINGS AND SIO2 AT HIGH TEMPERATURE

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

PROCEEDINGS OF THE JSME 2020 CONFERENCE ON LEADING EDGE MANUFACTURING/MATERIALS AND PROCESSING, LEMP2020 2020

THE PROPOSAL OF TWO DIFFERENT-SIZED ABRASIVES TO SHORTEN POLISHING-PROCESS-TIME AND REDUCE MANUFACTURING COST

Tokoroyama, T; Takeno, H; Umehara, N; Murashima, M

PROCEEDINGS OF THE JSME 2020 CONFERENCE ON LEADING EDGE MANUFACTURING/MATERIALS AND PROCESSING, LEMP2020 2020

THE INFLUENCE OF DEFECTS IN TA-C COATING DEPOSITED BY FCVA METHOD ON THEIR TRIBOLOGICAL BEHAVIOR

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

PROCEEDINGS OF THE JSME 2020 CONFERENCE ON LEADING EDGE MANUFACTURING/MATERIALS AND PROCESSING, LEMP2020 2020

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Papers - TOKOROYAMA, Takayuki