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Control of tribological properties of diamond-like carbon films with femtosecond-laser-induced nanostructuring |
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| Authors: | Naoki Yasumaru Kenzo Miyazaki |
| Affiliation: | a Department of Mechanical Engineering, Fukui National College of Technology, Sabae 916-8507, Japan b Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan c Eyetec Co. Ltd., Sabae 916-0016, Japan |
| Abstract: | This paper reports tribological properties of diamond-like carbon (DLC) films nanostructured by femtosecond (fs) laser ablation. The nanostructure was formed in an area of more than 15 mm × 15 mm on the DLC surface, using a precise target-scan system developed for the fs-laser processing. The frictional properties of the DLC film are greatly improved by coating a MoS2 layer on the nanostructured surface, while the friction coefficient can be increased by surface texturing of the nanostructured zone in a net-like patterning. The results demonstrate that the tribological properties of a DLC surface can be controlled using fs-laser-induced nanostructuring. |
| Keywords: | 61.80.Ba 79.20.Ds 42.62.Cf |
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