| Ultra-low friction of tetrahedral amorphous diamond-like carbon (ta-C DLC) under boundary lubrication in poly alpha-olefin (PAO) with additives HA Tasdemir, M Wakayama, T Tokoroyama, H Kousaka, N Umehara, ... Tribology International 65, 286-294, 2013 | 133 | 2013 |
| Wear behaviour of tetrahedral amorphous diamond-like carbon (ta-C DLC) in additive containing lubricants HA Tasdemir, M Wakayama, T Tokoroyama, H Kousaka, N Umehara, ... Wear 307 (1-2), 1-9, 2013 | 92 | 2013 |
| The effect of oil temperature and additive concentration on the wear of non-hydrogenated DLC coating HA Tasdemir, M Wakayama, T Tokoroyama, H Kousaka, N Umehara, ... Tribology International 77, 65-71, 2014 | 82 | 2014 |
| Tribological behavior of tetrahedral amorphous carbon (ta-C) coatings at elevated temperatures X Deng, H Kousaka, T Tokoroyama, N Umehara Tribology international 75, 98-103, 2014 | 82 | 2014 |
| Effect of nitrogen atoms desorption on the friction of the CNx coating against Si3N4 ball in nitrogen gas T Tokoroyama, M Goto, N Umehara, T Nakamura, F Honda Tribology letters 22, 215-220, 2006 | 70 | 2006 |
| Effect of mesh structure of tetrahedral amorphous carbon (ta-C) coating on friction and wear properties under base-oil lubrication condition MMB Mustafa, N Umehara, T Tokoroyama, M Murashima, A Shibata, ... Tribology International 147, 105557, 2020 | 62 | 2020 |
| Deformation–wear transition map of DLC coating under cyclic impact loading MFB Abdollah, Y Yamaguchi, T Akao, N Inayoshi, N Miyamoto, ... Wear 274, 435-441, 2012 | 60 | 2012 |
| Thermal stability and high-temperature tribological properties of aC: H and Si-DLC deposited by microwave sheath voltage combination plasma X Deng, H Kousaka, T Tokoroyama, N Umehara Tribology Online 8 (4), 257-264, 2013 | 51 | 2013 |
| Influence of zinc dialkyldithiophosphate tribofilm formation on the tribological performance of self-mated diamond-like carbon contacts under boundary lubrication HA Tasdemir, T Tokoroyama, H Kousaka, N Umehara, Y Mabuchi Thin Solid Films 562, 389-397, 2014 | 50 | 2014 |
| Effect of oil temperature and counterpart material on the wear mechanism of ta-CNx coating under base oil lubrication X Liu, R Yamaguchi, N Umehara, M Murashima, T Tokoroyama Wear 390, 312-321, 2017 | 49 | 2017 |
| The wear classification of MoDTC-derived particles on silicon and hydrogenated diamond-like carbon at room temperature KAM Kassim, T Tokoroyama, M Murashima, N Umehara Tribology International 147, 106176, 2020 | 46 | 2020 |
| Effect of mating material and graphitization on wear of aC: H coating in boundary base oil lubrication KAM Aboua, N Umehara, H Kousaka, T Tokoroyama, M Murashima, ... Tribology Letters 68, 1-8, 2020 | 43 | 2020 |
| Effect of defects on wear behavior in ta-C coating prepared by filtered cathodic vacuum arc deposition WY Lee, YJ Jang, T Tokoroyama, M Murashima, N Umehara Diamond and Related Materials 105, 107789, 2020 | 41 | 2020 |
| Tribological properties of ta-CNx coating sliding against steel and sapphire in unlubricated condition X Liu, N Umehara, T Tokoroyama, M Murashima Tribology International 131, 102-111, 2019 | 39 | 2019 |
| Deposition and tribological behaviors of ternary BCN coatings at elevated temperatures X Deng, H Kousaka, T Tokoroyama, N Umehara Surface and Coatings Technology 259, 2-6, 2014 | 39 | 2014 |
| Wear acceleration of aC: H coatings by molybdenum-derived particles: Mixing and temperature effects KAM Kassim, T Tokoroyama, M Murashima, WY Lee, N Umehara, ... Tribology International 159, 106944, 2021 | 38 | 2021 |
| The effect of UV irradiation to aC: H on friction and wear properties under PAO oil lubrication including MoDTC and ZnDTP MT bin Taib, N Umehara, T Tokoroyama, M Murashima Tribology Online 13 (3), 119-130, 2018 | 38 | 2018 |
| Influence of UV irradiation in low frictional performance of CNx coatings T Tokoroyama, M Kamiya, N Umehara, C Wang, D Diao Lubrication Science 24 (3), 129-139, 2012 | 38 | 2012 |
| Hardness effect of DLC on tribological properties for sliding bearing under boundary lubrication condition in additive-free mineral base oil NAB Masripan, K Ohara, N Umehara, H Kousaka, T Tokoroyama, S Inami, ... Tribology International 65, 265-269, 2013 | 36 | 2013 |
| Design of low-friction PVD coating systems with enhanced running-in performance—carbon overcoats on TaC/aC coatings H Nyberg, T Tokoroyama, U Wiklund, S Jacobson Surface and Coatings Technology 222, 48-54, 2013 | 35 | 2013 |
