Oxidation resistant Si-Mo-Al coating for C/SiC coated carbon/carbon composites at high temperature

被引：7
作者：
Zhang, Y. -L. [1 ]
Li, H. -J. [1 ]
Yao, X. -Y. [1 ]
Li, K. -Z. [1 ]
Qiang, X. -F. [1 ]
机构：
[1] Northwestern Polytech Univ, CC Composites Res Ctr, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
来源：
SURFACE ENGINEERING | 2012年 / 28卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Carbon/carbon composites; Oxidation; Coating; CARBON-CARBON COMPOSITES; PROTECTIVE ABILITY; MICROSTRUCTURE; WHISKERS;
D O I：
10.1179/1743294411Y.0000000041
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A Si-Mo-Al coating for protecting carbon/carbon (C/C) composites against oxidation at elevated temperature was prepared on the surface of the C/SiC coated C/C composites by slurry method. The phase composition, microstructure and oxidation resistance of the coating at 1773 K in air were investigated. The results show that the as prepared coating was mainly composed of SiC, MoSi2, Mo(Si,Al)(2) and Si. The coating provided excellent oxidation protective ability at 1773 K in air and can effectively protect the C/C composites from oxidation for 150 h. The failure of the coating at 1873 K in air is attributed to the spalling of the glass layer during the oxidation tests.
引用
收藏
页码：257 / 260
页数：4
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