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Microstructure and wear performance of gradient Ti/TiN metal matrix composite coating synthesized using a gas nitriding technology

被引：76
作者：
Cui, ZD
Zhu, SL
Man, HC
Yang, XJ [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
[2] Hong Kong Polytech Univ, Dept Ind & Syst Engn, Kowloon, Hong Kong, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2005年 / 190卷 / 2-3期
关键词：
laser gas nitriding; titanium; titanium nitride; metal matrix composite coating; wear resistance;
D O I：
10.1016/j.surfcoat.2004.02.012
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 [材料科学与工程]; 080502 [材料学];
摘要：
Surface modification is an attractive method to enhance the surface hardness and wear resistance of titanium. In this paper, a continuous wave 2 kW Nd:YAG laser was used to synthesize Ti/TiN metal matrix composite coating on the surface of commercial pure titanium. The microstructure and the wear resistance of the synthesized metal matrix composite coating were investigated. The synthesized surface Ti/TiN metal matrix composite coating had a pronounced gradient microstructure through the melt depth. Good metallurgical bonding between the reinforcing phase of the metal matrix composite and the titanium matrix was observed. The hardness and wear resistance under block-on-ring dry sliding wear testing conditions of the synthesized Ti/TiN metal matrix composite coating were markedly enhanced. (C) 2004 Elsevier B.V. All rights reserved.
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页码：309 / 313
页数：5
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