Wear Resistance Enhancement of Ti-6Al-4 V Alloy by Applying Zr-Modified Silicide Coatings

被引：0

作者：

Xuan Li

Guangzhong Hu

Jin Tian

Wei Tian

Wenling Xie

Xiulan Li

机构：

[1] Sichuan University of Science and Engineering,College of mechanical engineering

[2] Material Corrosion and Protection Key Laboratory of Sichuan province,undefined

[3] China United Northwest Institute for Design and Research,undefined

来源：

Journal of Materials Engineering and Performance | 2018年 / 27卷

关键词：

micro-hardness; silicide coating; Ti-6Al-4 V; wear resistance; Zr modification;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Zr-modified silicide coatings were prepared on Ti-6Al-4 V alloy by pack cementation process to enhance its wear resistance. The microstructure and wear properties of the substrate and the coatings were comparatively investigated using GCr15 and Al2O3 as the counterparts under different sliding loads. The obtained Zr-modified silicide coating had a multilayer structure, consisting of a thick (Ti,X)Si2 (X represents Al, Zr and V elements) outer layer, a TiSi middle layer and a Ti5Si4 + Ti5Si3 inner layer. The micro-hardness of the coating was much higher than the substrate and displayed a decrease tendency from the coating surface to the interior. Sliding against either GCr15 or Al2O3 balls, the coatings showed superior anti-friction property to the Ti-6Al-4 V alloy, as confirmed by its much lower wear rate under each employed sliding condition.

引用

页码：1073 / 1082

页数：9

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