SiC/Si - MoSi2/MoSi2 oxidation protective coating for carbon material at 1700 °C

被引：4
|
作者：
Zhao, Juan [1 ]
机构：
[1] Guang Dong Ocean Univ, Coll Engineer, Zhanjiang, Guangdong, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING APPLICATIONS, PTS 1-3 | 2011年 / 160-162卷
关键词：
Graphite; Oxidation; Coating;
D O I：
10.4028/www.scientific.net/AMR.160-162.1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A multi-layer coating SiC/ Si - MoSi2 /MoSi2 with good oxidation resistance has been developed by using the slurry-sintering method on the surface of graphite to improve the oxidation resistance performance at 1700 degrees C for more than 200 h. Microstructure and anti-oxidation property of the as-received coating were investigated. It was found that functionally gradient SiC/ Si - MoSi2 /MoSi2 coating was formed on the surface of the graphite substrate. The coating characterized by excellent thermal shock resistance can effectively protect the graphite from oxidation at 1700 degrees C for 200 h. The mechanism of the oxidation resistance of the coated graphite is also dicussed, and a dense SiO2 layer was formed on the surface of coating at 1700 degrees C during the isotheral oxidation, which can protect graphite from oxidation at longer time.
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页码：1 / 6
页数：6
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