Ablation resistance of HfB2-SiC coating prepared by in-situ reaction method for SiC coated C/C composites

被引：55

作者：

Wang, Peipei ^{[1
]}

Li, Hejun ^{[1
]}

Jia, Yujun ^{[1
]}

Zhang, Yulei ^{[1
]}

Yuan, Ruimei ^{[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 | 2017年 / 43卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Carbon/carbon composites; HfB2-SiC; Ablation resistance; HIGH-TEMPERATURE CERAMICS; CARBON-BASED MATERIALS; OXIDATION RESISTANCE; CARBON/CARBON COMPOSITES; IMPROVE; LAYER;

D O I：

10.1016/j.ceramint.2017.06.052

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：

To improve the ablation resistance of SiC coating, HfB2-SiC coating was prepared on SiC-coated carbon/carbon (C/C) composites by in-situ reaction method. Owing to the penetration of coating powders, there is no clear boundary between SiC coating and HfB2-SiC coating. After oxyacetylene ablation for 60 s at heat flux of 2400 kW/m(2), the mass ablation rate and linear ablation rate of the coated C/C composites were only 0.147 mg/s and 0.267 pm/s, reduced by 21.8% and 60.0%, respectively, compared with SiC coated C/C composites. The good ablation resistance was attributed to the formation of multiple Hf-Si-O glassy layer including SiO2, HfO2 and HfSiO4.

引用

页码：12005 / 12012

页数：8

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