An ultra-hard and thick composite coating metallurgically bonded to Ti-6Al-4V

被引：10

作者：

Fan, Dongyu ^{[1
]}

Liu, Xiaojun ^{[1
]}

Huang, Jihua ^{[1
]}

Fu, Ren ^{[1
]}

Chen, Shuhai ^{[1
]}

Zhao, Xingke ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2015年 / 278卷

关键词：

(Ti-Zr-Cu-Ni) plus TiC composite coating; Vacuum braze coating process; Ultra-hard thick coating; Metallurgical bond; Wear resistance; MECHANICAL-PROPERTIES; THERMODYNAMIC ASSESSMENT; TITANIUM;

D O I：

10.1016/j.surfcoat.2015.08.008

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The vacuum braze coating process was proposed to prepare an ultra-hard thick composite coating on titanium alloy in this paper. Mixed powders of Ti-Zr-Cu-Ni and TiC were heated to 1223 K and held for 30 min under vacuum. Microstructure and mechanical properties of the (Ti-Zr-Cu-Ni) + TiC composite coating have been systematically analyzed. The results showed that a uniform dispersion of TiC in the Ti-Zr-Cu-Ni matrix can be found for the composite coating, which is strongly bonded with TC4. Moreover, the surface hardness improved drastically after the incorporation of TiC particles, and the maximum value of surface Rockwell hardness was 66.1 HRC. The (Ti-Zr-Cu-Ni) + TiC composite coating had excellent wear resistance under sliding wear test conditions compared with the pure Ti-Zr-Cu-Ni coating, due to the high hardness of the TiC dispersoids. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：157 / 162

页数：6

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