| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 617634 | Wear | 2013 | 9 Pages |
The tribological performances of non-hydrogenated amorphous carbon (a-C) coating sliding against different coating counterparts including a-C:H, CrN, CrSiN, TiN, TiCN and itself in ambient air and water were comparatively studied. Results showed that the a-C coating coupling with these different coatings exhibited similar low friction coefficients in ambient air, and the friction coefficients would decrease further in water if the a-C coating could survive. The wear rates of a-C coating sliding against transition metal nitride coatings were higher than those sliding against carbon-based coatings in ambient air. Water could reduce the wear rate of a-C coating drastically if there was a stable wear, while the unstable wear with rupture and delamination of the coupled coating in water would result in the wear rate increase or rupture of the a-C coating as well. The a-C coating coupling with itself exhibited the optimum tribological performances in water.
► The a-C coating shows low friction and wear to various coatings in ambient air. ► Friction between a-C and coatings without ruptures in water are reduced by water. ► Wear of a-C against coatings without ruptures in water are alleviated by water. ► Ruptures of the coupled coatings in water would lead to the wear increase of a-C. ► The a-C coupling with itself exhibits optimum tribological performances in water.
