WSi2 modified HfB2-SiC coating: Microstructure and ablation resistance

被引：13

作者：

Zhang, Jiaping ^{[1
]}

Hou, Jiaqi ^{[1
]}

Wang, Running ^{[1
]}

Chen, Ruicong ^{[1
]}

Su, Xiaoxuan ^{[1
]}

Fu, Qiangang ^{[1
]}

Lv, Hao ^{[1
]}

He, Ziwei ^{[1
]}

Cui, Zhijian ^{[1
]}

Cong, Zitao ^{[1
]}

Dai, Xiaonian ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Shaanxi Key Lab Fiber Reinforced Light Weight Comp, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2023年 / 43卷 / 15期

基金：

中国国家自然科学基金;

关键词：

HfB2-SiC; WSi2; Coating; Ablation; Hf-Si-W-O compound phase; HIGH TEMPERATURE CERAMICS; CARBON/CARBON COMPOSITES; OXIDATION RESISTANCE; DENSIFICATION; FUTURE; SI;

D O I：

10.1016/j.jeurceramsoc.2023.07.070

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 enhance the ablation resistance of carbon/carbon composites, WSi2 modified HfB2-SiC coating was prepared by slurry dipping combined with vapor silicon infiltration. The effect of WSi2 contents on the ablation perfor-mance of the coating was investigated. The results showed that the coating with 20 wt% WSi2 had the best ablation resistance under oxyacetylene torch. During ablation, a dense Hf-Si-W-O oxide layer was covered on the coating surface, inhibiting the diffusion of oxygen. Additionally, WSi2 with high emissivity and the formed W with good thermal conductivity played a role in reducing the ablation temperature. These effects contributed to the improvement of ablation performance.

引用

页码：6746 / 6757

页数：12

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