MoSi2-HfC/TaC-HfC multi-phase coatings synthesized by supersonic atmospheric plasma spraying for C/C composites against ablation

被引：35

作者：

Shuai, Kang ^{[1
]}

Zhang, Yulei ^{[1
]}

Fu, Yanqin ^{[1
]}

Guo, Xiaotong ^{[1
]}

Li, Tao ^{[1
]}

Li, Jie ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Carbon Carbon Composites Res Ctr, Shanxi Key Lab Fiber Reinforced Light Weight Comp, Xian 710072, Peoples R China

来源：

CORROSION SCIENCE | 2021年 / 193卷 / 193期

基金：

中国国家自然科学基金;

关键词：

MoSi2-HfC; TaC-HfC coatings; Supersonic atmospheric plasma spraying; Ablation resistance; Ultra-high temperature ceramics; CARBON/CARBON COMPOSITES; HAFNIUM CARBIDE; OXIDATION; BEHAVIOR; RESISTANCE; MOSI2;

D O I：

10.1016/j.corsci.2021.109884

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To improve the ablation resistance of C/C composites, MoSi2-HfC/TaC-HfC (MH/TH) bilayer coatings were synthesized on SiC coated C/C composites. Results showed that the mass and linear ablation rate of MH/TH coatings were 0.236 mg/s and 1.026 mu m/s, respectively. The excellent performance of MH/TH coatings was attributed to the combination of TH and MH layers. The external TH layer could create Ta2O5 and Hf6Ta2O17 glassy phase to protect the internal layer and prevent the formation of destructive MoO3. Meanwhile, the decomposition of the internal MH layer to produce SiO2 diffusion outward could retard the destruction of the external coating.

引用

页数：12

共 33 条

[1] CHEMICAL-VAPOR-DEPOSITION OF HAFNIUM CARBIDE AND CHARACTERIZATION OF THE DEPOSITED LAYERS BY SECONDARY-NEUTRAL MASS-SPECTROMETRY [J].