A multilayer plasma-assisted CVD coating for oxidation protection of carbon-carbon composites

被引：0
|
作者：
Tsou, HT
Kowbel, W
机构：
[1] Auburn Univ, Auburn, United States
来源：
JOURNAL OF ADVANCED MATERIALS | 1996年 / 27卷 / 03期
关键词：
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Plasma-assisted Chemical Vapor Deposition (PACVD) B4C/SiC coating and a multilayer PACVD (B4C/SiC) CVD (SiC/Si3N4) coating were deposited on a 2-D C-C substrate. Oxidation behavior of coated and uncoated C-C composites was studied using a thermogravimetric analyzer (TGA) in both the isothermal and kinetic mode. The PACVD coating provided excellent oxidation protection of the C-C substrate at temperatures up to 950 degrees C, whereas the PACVD B4C/SiC CVD SiC/Si3N4 coating provided good oxidation protection at temperatures up to 1,400 degrees C. Coated composites were examined using SEM and optical microscopy. A correlation between coating microstructure and oxidation behavior is discussed.
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页码：9 / 13
页数：5
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