A carbon nanotube-enhanced SiC coating for the oxidation protection of C/C composite materials

被引：53
作者：
Zheng, Guo-Bin [1 ]
Sano, Hideaki [1 ]
Uchiyama, Yasuo [1 ]
机构：
[1] Nagasaki Univ, Dept Mat Sci & Engn, Fac Engn, Nagasaki 8528521, Japan
来源：
COMPOSITES PART B-ENGINEERING | 2011年 / 42卷 / 08期
关键词：
Carbon nanotubes; Carbon/carbon composites; Chemical vapor deposition; ANTIOXIDATION;
D O I：
10.1016/j.compositesb.2011.05.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A carbon nanotube-enhanced SiC (CNT-SiC) coating was deposited on C/C composites to improve the oxidation resistance of C/C. The CNT-SiC coating was prepared by direct growth of CNTs on C/C surface at 700 degrees C followed by deposition of SiC using chemical vapor deposition at 1150 degrees C for 1 h. SIC was deposited on the CNTs as well as the interface between CNTs and C/C, making CNTs strongly rooted on C/C surface. The final CNT-SiC coating consisted of two layers: the CNT-SiC layer and SiC layer. In comparison to the SiC coating, the CNT-SiC coating showed fewer cracks and a better oxidation resistance because the CNTs reduce the stress in the coating caused by the mismatch of the coefficient of thermal expansion between C/C and SiC. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2158 / 2162
页数：5
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