Microstructure and ablation performance of HfC/PyC core-shell structure nanowire-reinforced Hf1-xZrxC coating

Jincui Ren, Chaofeng Lv, Yuting Duan, Yulei Zhang, Jian Zhang

科研成果: 期刊稿件文章同行评审

22 引用 (Scopus)

摘要

To improve the ablation performance of C/C composites, HfC/PyC core-shell structure nanowire (HfCnw/PyC)-reinforced Hf1-xZrxC coating was prepared via three-step chemical vapor deposition (CVD) method. Effects of HfCnw/PyC and PyC layer thickness on the microstructure, residual stress and ablation performance of Hf1-xZrxC coating were studied. HfCnw/PyC-reinforced coatings exhibited equiaxial crystal structure. After incorporating HfCnw/PyC, ablation property of Hf1-xZrxC coating was enhanced because of the skeleton role of HfO2 nanowires. PyC possessed low coefficient of thermal expansion (CTE) and high heat conductivity, but poor ablation performance. Hence, with the increase in thickness of PyC layer, ablation property of the coating first increased and then decreased. HfCnw/PyC-reinforced Hf1-xZrxC coating with PyC layer thickness of about 50 nm exhibited the best ablation property.

源语言英语
页(从-至)7450-7463
页数14
期刊Journal of the European Ceramic Society
41
15
DOI
出版状态已出版 - 12月 2021

指纹

探究 'Microstructure and ablation performance of HfC/PyC core-shell structure nanowire-reinforced Hf1-xZrxC coating' 的科研主题。它们共同构成独一无二的指纹。

引用此