期刊
RESULTS IN PHYSICS
卷 24, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.rinp.2021.104132
关键词
Pre-nitriding; Ceramic coating; Multilayers; Tungsten nitride; Tribological property
资金
- Shandong Provincial Natural Science Foundation, China [ZR2018MEE016, ZR2019MEM012, ZR2019BEE073]
- Shandong Major Scientific and Technological Innovation Program, China [2019JZZY010325]
- Innovation and Entrepreneurship Training Program for College Students of Yantai University [S202011066010]
- Shenzhen Omete Nanotechnology Co., Ltd.
The study demonstrates that the combination of plasma nitriding and coating as a surface treatment effectively enhances the wear resistance of austenitic stainless steels. The optimized multilayered coating followed by prenitriding results in excellent anti-friction and highly wear-resistant surfaces.
Due to their high corrosion resistance, non-transformation, and non-magnetism, austenitic stainless steels can meet the service requirements. However, their low hardness and poor wear resistance impose serious drawbacks. A combination of plasma nitriding and coating as a surface treatment has been shown to improve the wear resistance without affecting the corrosion performance. In this work, the rapid plasma nitriding has been conducted on AISI 316L austenitic stainless steels using a hollow cathode discharge assisted plasma nitriding apparatus. The CrN/CrTiAlSiN/WCrTiAlN multilayers coating consisted of a CrN bottom-layer, a CrTiAlSiN interlayer, and a WCrTiAlN top-multilayer was successfully prepared using cathodic multi-arc evaporation. This ceramic coating was deposited on the surfaces of untreated and nitrided AISI 316L steels. Characterizations of the polished, rapid plasma-nitrided (RPN), only-coating, and duplex (RPN and Coating) samples were compared. Furthermore, the mechanical properties of the samples were evaluated by nano-indentation and Vickers microhardness tests. The dry sliding-wear characteristics were investigated by ball-on-disk wear tests against bearing steel counterparts. Tribology measurements revealed that an optimized multilayered coating followed by prenitriding results in excellent anti-friction and highly wear-resistant surfaces.
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