Effect of a hydrogenated interface on the wear behavior of a diamond-like carbon film in a water environment
| Autor: | Yongxiang Leng, Nan Huang, Q.Y. Deng, W.J. Huang, T.F. Zhang, B.J. Wu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Passivation Diamond-like carbon Hydrogen Mechanical Engineering Metallurgy A diamond chemistry.chemical_element 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Electronic Optical and Magnetic Materials Corrosion 020303 mechanical engineering & transports Carbon film 0203 mechanical engineering chemistry Materials Chemistry Water environment Immersion (virtual reality) Electrical and Electronic Engineering Composite material 0210 nano-technology |
| Zdroj: | Diamond and Related Materials. 74:53-58 |
| ISSN: | 0925-9635 |
| DOI: | 10.1016/j.diamond.2017.02.007 |
| Popis: | Hydrogenated diamond-like carbon (DLC) films or DLC films with hydrogenated interlayers tend to undergo early stage failure in water environments for reasons that are not fully understood. In this paper, a hydrogenated interface was prepared between a hydrogen free DLC film and a CoCrMo substrate, and the effects of the hydrogenated interface on the film structure, hardness, adhesion, wear behavior and corrosion resistance were investigated. The hydrogen free DLC films on the hydrogenated and the hydrogen free substrates exhibited similar structures and mechanical properties. The DLC films on both the hydrogenated and the virgin CoCrMo substrates exhibited good adhesion. The adhesions of the DLC films on both the substrates were not deteriorated after 150 days of immersion in 0.9% NaCl solution. The wear resistance of the DLC film on the hydrogenated CoCrMo substrate was worse than that on the virgin CoCrMo substrate in water. The presence of hydrogen improved the activity of the interface, restrained the formation of a passivation layer, and promoted the corrosion of the interface, which caused early stage failure of the DLC film in water. Therefore, the hydrogenated interface has a negative effect on the wear behaviors of DLC films in water environments. |
| Databáze: | OpenAIRE |
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