A thick SiC-Si coating prepared by one-step pack cementation for long-term protection of carbon/carbon composites against oxidation at 1773 K

被引：11

作者：

Zhang, Bei ^{[1
]}

Yi, Maozhong ^{[1
]}

Ning, Yao ^{[1
]}

Xie, Aolin ^{[1
]}

Zhou, Zhe ^{[2
]}

Feng, Zhirong ^{[1
]}

机构：

[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[2] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410114, Peoples R China

来源：

CORROSION SCIENCE | 2022年 / 200卷

关键词：

SiC-Si coatings; Long-term oxidation resistance; Self-healing; Carbon; carbon composites; THERMAL-EXPANSION COEFFICIENT; ABLATION RESISTANCE; SILICON-CARBIDE; C/C COMPOSITES; ANTIOXIDATION PROPERTY; MICROSTRUCTURE; TEMPERATURE; IMPROVEMENT; NANOWIRES; BEHAVIOR;

D O I：

10.1016/j.corsci.2022.110223

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A thick SiC-Si coating for carbon/carbon (C/C) composites is prepared by one-step pack cementation (PC) process. The microstructure of the coating, the interface structure between the coating and the substrate, and anti-oxidation properties are investigated. As-prepared coating with a thickness of about 774 mu m has a dense and microcrack-free structure. Oxidation test results showed that weight gain of SiC-Si coated specimens is about 8.1 mg.cm(- 2) after oxidation at 1773 K for 338 h, and no failure. By exploring the oxidation resistance of coatings with different thicknesses, it can be found that thickness has a positive effect on coating performance.

引用

页数：9

共 34 条

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