Oxidation protection of C/C composites with in situ bamboo-shaped SiC nanowire-toughened Si-Cr coating

被引：36
|
作者：
Li, Hejun [1 ]
Yang, Xi [1 ]
Chu, Yanhui [1 ]
Li, Lu [1 ]
Fu, Qiangang [1 ]
Qi, Lehua [2 ]
机构：
[1] Northwestern Polytech Univ, Carbon Carbon Composites Res Ctr, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Sch Mechatron Engn, Xian 710072, Peoples R China
来源：
CORROSION SCIENCE | 2013年 / 74卷
基金：
中国国家自然科学基金;
关键词：
Ceramic matrix composites; High temperature corrosion; Oxidation;
D O I：
10.1016/j.corsci.2013.05.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An in situ bamboo-shaped SiC nanowire-toughened Si-Cr coating was prepared on the carbon/carbon composites by pack cementation and heat treatment with ferrocene as the catalyst. The microstructures and oxidation behavior of the coating were investigated. Results showed that the coating had a dense microstructure, without the penetrating microcracks, which was primarily attributed to the unusual toughening effect of the bamboo-shaped nanowires resulting from the mechanical interlocking between the nodes and the matrix. The coating exhibited good oxidation protection ability at high temperature. The weight gain of the samples was 0.79% after isothermal oxidation at 1500 degrees C for 185 h. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：419 / 423
页数：5
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