METALS AND METAL MATRIX COMPOSITES |
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Deposition and Anti-Wear/Corrosion Properties of Nano-multilayer TiN/CrN Films on Titanium Alloy |
HUANG Xueli, TAN Junguo, ZHANG Tengfei, MO Jinjun, GAO Zecui, ZHONG Xing, WANG Qimin
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College of Electro-mechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China |
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Abstract Nano-multilayer coatings havebeen widely applied in wear-corrosion protection of titanium alloys. In this paper, TiN, CrN and TiN/CrN nano-multilayer coatings were prepared on the surface of TC4 alloy by arc ion plating technology. The microstructure, phase structure, hardness, adhesion strength, wear and electrochemical corrosion properties of the coatings were systematically studied. The results showed that the TiN/CrN nano-multilayer coating grew with (111) preferred orientation, a dense structure, a modulation period of 25 nm and a hardness of 24 GPa. The multilayer structure interrupted the growth of the columnar crystal and effectively blocked the channel of the corrosion medium diffusing to the substrate. Compared with TiN and CrN coatings, the adhesion strength of TiN/CrN coating with TC4 was significantly improved. The wear rate of TiN/CrN coating was 3.44×10-7 mm3·N-1·m-1, and the self-corrosion current density (icorr) was 3.16×10-8 A/cm2, which were significantly lower than those of TC4, TiN and CrN coatings, indicating that the wear and corrosion resistance of TiN/CrN nano-multilayer coating were better than those of TiN and CrN coatings, and it could provide better protection for TC4 alloy under wear-corrosion environment.
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Published: 23 February 2021
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Fund:This work was financially supported by Equipment Pre-research Foundation of China (61409220407). |
Corresponding Authors:
tfzhang@gdut.edu.cn;qmwang@gdut.edu.cn
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About author:: Xueli Huang, graduated from the School of Materials Science and Engineering of Anhui University of Technology in 2017, is currently studying at Guangdong University of Technology for the PVD hard coating research. Tengfei Zhang, Ph. D. graduated from the Pusan National University, South Korea, postdoctoral program at National Core Research Center for Hybrid Materials, South Korea. Mainly engaged in multi-functional nano-multilayer/nano-composite hard coatings, diamond-like carbon films, and MAX phase films. He has published more than 40 SCI papers on journal such as ASC Applied Materials & Interfaces, Journal of the Electrochemical Society and Surface and Coatings Technology. Qimin Wang is a professor and doctoral supervisor at Guangdong University of Technology. In January 2007, he obtained a Ph.D. in Engineering from the Institute of Metal Research, Chinese Academy of Sciences. From 2007 to 2012, he worked as a postdoctoral fellow, Humboldt scholar, and research professor at the National Research Center of NCRC (GFC-HIM), Busan University, South Korea, and Brandenburg University of Technology, Germany. He was selected into the Central “Thousand Talents Program” (Youth Project), the National Natural Science Foundation Outstanding Young Science Foundation, Guangdong Province University “Pearl River Scholar” Distinguished Professor, Humboldt Scholar in Germany, Shen-yang Branch of the Chinese Academy of Sciences, etc. Mainly engaged in the research of hard coatings, high-temperature protective coatings and new hard functional films, focusing on hot and difficult issues such as the functions and protective coatings of tools, molds, 3C products, auto parts, aerospace hot end components Research. In the past five years, he has published more than 40 SCI articles and applied for more than 39 invention patents. |
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