Surface modification of titanium alloy with the Ti3Al + TiB2/TiN composite coatings

被引：11
|
作者：
Li, J. N. [1 ]
Chen, C. Z. [1 ]
Cui, B. B. [1 ]
Squartini, T. [2 ]
机构：
[1] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Dept Mat Sci, Jinan 250061, Peoples R China
[2] Univ Siena, Dept Phys, INFM, I-53100 Siena, Italy
来源：
SURFACE AND INTERFACE ANALYSIS | 2011年 / 43卷 / 12期
关键词：
laser cladding technology; interface; surfaces; composite coating; METAL-MATRIX COMPOSITE; TRIBOLOGICAL PROPERTIES; LASER; MICROSTRUCTURE; COATINGS; TEMPERATURE; TIO2/TI3AL; CERAMICS; ALUMINUM; LAYER;
D O I：
10.1002/sia.3809
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Laser cladding of the Ti3Al+TiB2 pre-placed alloy powder on the Ti-6Al-4V alloy in nitrogen protective atmosphere can form the Ti3Al+TiB2/TiN composite coating, which can dramatically improve the wear resistance of the Ti-6Al-4V alloy surface. In this study, the Ti3Al+TiB2/TiN composite coatings on the Ti-6Al-4V alloy have been researched by means of X-ray diffraction, SEM and energy dispersive spectrometry. It was found that there is a metallurgical combination between the Ti3Al+TiB2/TiN composite coating and the substrate. The microhardness of the Ti3Al+TiB2/TiN composite coatings were 3 similar to 4 times higher than that of the Ti-6Al-4V alloy because of the actions of the Ti3Al+TiB2/TiN hard phases and the grain refinement strengthening. Moreover, the wear mass losses of the Ti3Al+TiB2/TiN composite coatings were much lower than that of the substrate. Copyright (C) 2011 John Wiley & Sons, Ltd.
引用
收藏
页码：1543 / 1548
页数：6
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