Oxidation protection of SiC-coated C/C composites by SiC nanowire-toughened CrSi2-SiC-Si coating

被引：55
|
作者：
Chu Yanhui [1 ]
Li Hejun [1 ]
Fu Qiangang [1 ]
Qi Lehua [2 ]
Wei Bingbo [3 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Carbon Carbon Composites Res Ctr, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Sch Mechatron Engn, Xian 710072, Peoples R China
[3] Northwestern Polytech Univ, Shaanxi Key Lab Space Mat Sci & Technol, Xian 710072, Peoples R China
来源：
CORROSION SCIENCE | 2012年 / 55卷
基金：
中国国家自然科学基金;
关键词：
Ceramic matrix composites; Weight loss; Oxidation; CARBON/CARBON COMPOSITES; MICROSTRUCTURE; DEPOSITION;
D O I：
10.1016/j.corsci.2011.11.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Oxidation protective SIC nanowire-toughened CrSi2-SiC-Si coating was prepared on SiC-coated carbon/carbon composites by chemical vapor deposition and pack cementation. SiC nanowires in the coating suppressed the cracking of the coating via various toughening mechanisms including nanowire pullout, microcrack bridging by nanowire and microcrack deflection, resulting in a good oxidation inhibition for the coated samples. The results showed that the maximal weight loss of the coated samples was only 2.55% in thermogravimetric analysis from room temperature to 1500 degrees C, and the weight loss of the coated samples was only 1.24% after isothermal oxidation at 1500 degrees C for 316 h. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：394 / 400
页数：7
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