Boron modified multi-layer MoSi2-CrSi2-SiC-Si oxidation protective coating for carbon/carbon composites

被引：18
作者：
Feng, Tao [1 ]
Li, He-Jun [1 ]
Wang, Shao-Long [1 ]
Hu, Man-Hong [1 ]
Liu, Lei [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Carbon/carbon composites; Coating; Oxidation; CARBON-CARBON COMPOSITES; C/C COMPOSITES; BEHAVIOR; MICROSTRUCTURE; B2O3;
D O I：
10.1016/j.ceramint.2014.06.131
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Boron modified multi-layer MoSi2-CrSi2-SiC-Si coatings were prepared on the surface of carbon/carbon (C/C) composites by three-step pack cementation in argon. The morphology and the element distribution were analyzed by scanning electron microscopy and energy dispersive spectroscopy, respectively. The oxidation resistance and thermal cycling property of the multi-layer coating were investigated. These results indicated that the coatings could protect the C/C composites from oxidation at 1173 K for 200 h or 1773 K for 200 h and endure the thermal cycling for 30 cycles between 1773 K and room temperature. The oxidation resistance of the coating was improved due to the formation of compound glass during oxidation. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：15167 / 15173
页数：7
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