期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 25, 期 2, 页码 451-456出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(15)63623-8
关键词
Ti/TiN/Zr/ZrN multilayer coatings; surface roughness; sand erosion resistance; corrosion resistance; vacuum cathodic arc deposition; TiN; ZrN
资金
- International Cooperation Program of Guangdong Province, China [2011B050400007]
Ti/TiN/Zr/ZrN multilayer coatings were deposited on Cr17Ni2 steel substrates with different surface roughnesses by vacuum cathodic arc deposition method. Microstructure, micro-hardness, adhesion strength and cross-sectional morphology of the obtained multilayer coatings were investigated. The results show that the Vickers hardness of Ti/TiN/Zr/ZrN multilayer coating, with a film thickness of 11.37 mu m, is 29.36 GPa. The erosion and salt spray resistance performance of Cr17Ni2 steel substrates can be evidently improved by Ti/TiN/Zr/ZrN multilayer coating. The surface roughness of Cr17Ni2 steel substrates plays an important role in determining the mechanical and erosion performances of Ti/TiN/Zr/ZrN multilayer coatings. Overall, a low value of the surface roughness of substrates corresponds to an improved performance of erosion and salt spray resistance of multilayer coatings. The optimized performance of Ti/TiN/Zr/ZrN multilayer coatings can be achieved provided that the surface roughness of Cr17Ni2 steel substrates is lower than 0.4 mu m.
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