Study on plasma ablation behavior of C/C composite materials under particle erosion

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Zha, B.L.^1 ; Su, Q.D.^1 ; Shi, Y.A.^1 ; Wang, J.J.^1 ; He, Q.^2

Department of Power Engineering, Xi'An Hi-Tech Institute, Xi'an, China^1

Testing and Optoelectronics Engineering Institute, Nanchang Hangkong University, Nanchang, China^2

关键词: Mass ablation rates;    Material ablation;    Mechanical destruction;    Mechanical erosion;    Particle concentrations;    Particle erosion;    Thermal erosion;    Thermal protection;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012094/pdf
DOI  :  10.1088/1757-899X/423/1/012094

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to explore the ablation law and characteristics of carbon/carbon composite materials on the surface thermal protection of hypersonic vehicles under the condition of particle erosion, the ablation test of a 4D C/C composite was carried out based on a small plasma simulated ablation test system. Four sets of experiments were designed according to different temperature and particle concentration. After the test, two kinds of ablation rate were measured, and the microscopic ablation morphology was observed by scanning electron microscope (SEM) and the ablation behavior was analyzed. The results show that, under the equivalent test conditions, the rate of jet temperature increases, and the material ablation rate increases. With the increase of particle concentration, the two kinds of ablation rate of materials increased, the maximum mass ablation rate was 0.0363 g•s-1, and the line ablation rate was 0.053 mm•s-1. The temperature affects the thermal erosion rate of the material, while the particle mainly causes mechanical erosion. The particle has a coupling effect of heat transfer and mechanical destruction on the material, and the material ablation is intensified. Moreover, due to the strong corrosion resistance of carbon fiber, the overall corrosion resistance of materials has obvious anisotropy.