Self-densification behavior, interfacial bonding and cyclic ablation resistance of HfSi2-ZrSi2 modified SiC/ZrB2-SiC/SiC coating for Cf/SiC composite

被引：7

作者：

Tang, Pengju ^{[1
,2
,3
]}

Hu, Chenglong ^{[2
]}

Pang, Shengyang ^{[2
]}

Jiang, Yan ^{[2
]}

Liang, Bin ^{[2
]}

Wang, Lei ^{[1
,3
]}

Tang, Sufang ^{[2
]}

机构：

[1] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China

[3] Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 219卷

基金：

国家重点研发计划;

关键词：

Ceramic matrix composites; Coating; Interfacial boding; Ablation; OXIDATION RESISTANCE; MATRIX COMPOSITES; C/SIC COMPOSITES; C/C COMPOSITES; STRENGTH; MICROSTRUCTURE; IMPREGNATION; MODELS;

D O I：

10.1016/j.corsci.2023.111223

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A slurry method has good prospects in preparing coatings, yet great challenge to apply dense coatings due to the volatilization of slurry and the inert and pressureless sintering. Here we develop aHfSi(2)-ZrSi2 modified SiC/ZrB2-SiC/SiC triple-layer coating by an improved slurry method combined with CVD on C-f/SiC composites. The ZrSi2 and HfSi2 are preferentially oxidized in a novel oxygen-containing sintering process so that their generated SiO2 glass can heal defects to achieve self-densification of the coating. Resultantly, the coating presents outstanding interfacial bonding strength of 14.7 MPa and excellent cyclic ablation resistance at 1800 ? for 600 s

引用

页数：11

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