Gradient HfB2-SiC multilayer oxidation resistant coating for C/C composites

被引：47

作者：

Wang, Peipei ^{[1
]}

Tong, Mingde ^{[1
]}

Wang, Hanhui ^{[1
]}

Li, Hejun ^{[1
]}

Jia, Yujun ^{[1
]}

Li, Bo ^{[1
]}

Zhang, Yulei ^{[1
]}

Zhao, Zhigang ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Carbon Carbon Composites Res Ctr, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Carbon/carbon composites; Coating; Oxidation; COATED CARBON/CARBON COMPOSITES; CHEMICAL-VAPOR-DEPOSITION; HIGH-TEMPERATURE OXIDATION; THERMAL-SHOCK RESISTANCE; SILICON-CARBIDE; PACK CEMENTATION; MICROSTRUCTURE; LAYER; TRANSITION; PROTECTION;

D O I：

10.1016/j.ceramint.2018.08.104

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：

The gradient HfB2 modified SiC coating was prepared on the surface of SiC-coated C/C composites by in-situ synthesis. Anti-oxidation behaviors of the coated C/C samples at 1773, 1873 and 1973 K were investigated. The results show that the gradient HfB2 modified SiC coatings possess excellent oxidation resistance, which can protect C/C substrates from oxidation for 800, 305 and 100 h at 1773, 1873 and 1973 K, respectively. In addition, with the oxidation temperature increasing, the evaporation of the Hf-Si-O glass layer and the active oxidation of SiC were accelerated, which is the reason for the worst oxidation resistance of the sample at 1973 K among the three temperatures.

引用

页码：20968 / 20973

页数：6

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