Ablation behavior of C/SiC composites in plasma wind tunnel

被引：106

作者：

Luo, Lei ^{[1
]}

Wang, Yiguang ^{[1
]}

Liu, Liping ^{[1
,2
]}

Duan, Liuyang ^{[1
]}

Wang, Guolin ^{[2
]}

Lu, Yonghong ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China

[2] China Aerodynam Res & Dev Ctr, Ultrahigh Speed Aerodynam Res Inst, Mianyang 621000, Sichuan, Peoples R China

来源：

CARBON | 2016年 / 103卷

关键词：

TO-PASSIVE TRANSITION; TEMPERATURE ACTIVE OXIDATION; SILICON-CARBIDE; LOW-PRESSURE; OXYGEN; MICROSTRUCTURE; RESISTANCE; COATINGS; NITRIDE; SURFACE;

D O I：

10.1016/j.carbon.2016.02.085

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The ablation behavior is crucial to the application of carbon fiber reinforced silicon carbide (C/SiC) composites in thermal protection systems of spacecraft to enter the atmosphere or to cruise hypersonically in near space. Plasma wind tunnel is a suitable tool to simulate the service conditions of space vehicles. In this study, we systematically studied the ablation behaviors of C/SiC composites in plasma wind tunnel. The oxidation behavior of C/SiC composites in plasma is discussed. The results indicated that the oxidation under atomic oxygen condition dominated at low heat flux and stagnation pressure; however, rapid recession mechanism by sublimation and decomposition of SiC was observed at high heat flux and stagnation pressure. The temperature jump phenomenon during the ablation performed under high heat flux and stagnation pressure was attributed to the exposure of the carbon fibers to the plasma flow after consumption of the SiC coatings. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：73 / 83

页数：11

共 50 条

[1] Emissivity and catalycity measurements on SiC-coated carbon fibre reinforced silicon carbide composite [J].