Oxidation protection and behavior of C/C composites with an in situ SiC nanowire-SiC-Si/SiC-Si coating

被引：54
作者：
Chu, Yanhui [1 ]
Li, Hejun [1 ]
Fu, Qiangang [1 ]
Qi, Lehua [2 ]
Li, Lu [1 ]
Liu, Yangtong [1 ]
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 Mech Engn, Xian 710072, Peoples R China
来源：
CORROSION SCIENCE | 2013年 / 70卷
基金：
中国国家自然科学基金;
关键词：
Ceramic matrix composites; Kinetic parameters; High temperature corrosion; Oxidation; MULTILAYER COATINGS;
D O I：
10.1016/j.corsci.2012.11.039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An in situ SiC nanowire-SiC-Si/SiC-Si protective coating was prepared on C/C composites by pack cementation and heat treatment. SiC nanowires suppressed the cracking of the coating by nanowire pullout and bridging and microcrack deflection, avoiding the oxidation of C/C composites. Results showed that the oxidation of the samples was a continuous weight gain process. The oxidation behavior was fitted to the parabolic-linear model and the final weight gain was 1.8% during thermogravimetric analysis from 50 to 1600 degrees C. The oxidation behavior was fitted to the parabolic model and the final weight gain was 0.51% during isothermal oxidation at 800 degrees C. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：285 / 289
页数：5
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