Effect of Hybrid Surface Treatment Composed of Plasma Nitriding and W-Cr-Ti-Al-N Coating on Tribological Behavior of AISI 316L Steel
The aim of this study is to investigate the effect of plasma nitriding pre-treatment on hardness and tribological behavior of the hard coatings produced by Physical Vapor Deposition (PVD). AISI 316L austenitic stainless steel were subjected to surface modifications by plasma nitriding. W-Cr-Ti-Al-N...
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| Auteurs principaux: | , , , , , |
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| Format: | article |
| Langue: | EN |
| Publié: |
Japanese Society of Tribologists
2018
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| Accès en ligne: | https://doaj.org/article/2b0449e4264a428394788bd591ffc3ec |
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| Résumé: | The aim of this study is to investigate the effect of plasma nitriding pre-treatment on hardness and tribological behavior of the hard coatings produced by Physical Vapor Deposition (PVD). AISI 316L austenitic stainless steel were subjected to surface modifications by plasma nitriding. W-Cr-Ti-Al-N coatings were prepared by multi-arc ion plating equipment in a modified commercial system. The surface morphology and microstructure analysis showed that a duplex surface layer structure consisting of the 2.4 µm W-Cr-Ti-Al-N coating with supported by nitrogen expanded austenite phase and CrN precipitation + ferrite phase diffusion case was generated by the plasma nitriding. The reciprocating friction tests were performed against bearing steel counterparts on a UMT-3 tribometer at room temperature. The friction and wear tests demonstrated that the difference of hardness between the hybrid specimens and those only nitrided specimens, and the former specimens showed a significant amount of wear resistance with decrease in the coefficient of friction in comparison to the latter ones. |
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