Comparison of ZrB2-MoSi2 Composite Coatings Fabricated by Atmospheric and Vacuum Plasma Spray Processes

被引：29

作者：

Niu, Yaran ^{[1
]}

Wang, Zhong ^{[1
]}

Zhao, Jun ^{[1
]}

Zheng, Xuebin ^{[1
]}

Zeng, Yi ^{[1
]}

Ding, Chuanxian ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 200050, Peoples R China

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2017年 / 26卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

coating; oxidation; plasma spray; ZrB2-MoSi2; OXIDATION BEHAVIOR; ABLATION RESISTANCE; OXYACETYLENE TORCH; MICROSTRUCTURE; SILICIDES; AIR;

D O I：

10.1007/s11666-016-0490-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, ZrB2-20 vol.% MoSi2 (denoted as ZM) composite coatings were fabricated by atmospheric plasma spray (APS) and vacuum plasma spray (VPS) techniques, respectively. Phase composition and microstructure of the composite coatings were characterized. Their oxidation behaviors and microstructure changes at 1500 A degrees C were comparatively investigated. The results showed that VPS-ZM coating was composed of hexagonal ZrB2, tetragonal and hexagonal MoSi2, while certain amount of ZrO2 existed in APS-ZM coating. The oxide content, surface roughness and porosity of VPS-ZM coating were apparently lower than those of APS-ZM coating. The mass gain of APS-ZM coating was maximum at the beginning (1500 A degrees C, 0 h) and then decreased with the oxidation time extending, while the mass of VPS-ZM coating gradually increased with increasing the oxidation time. The possible reasons for the different oxidation behaviors of the two kinds of coatings were analyzed.

引用

页码：100 / 107

页数：8

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