C/SiC复合材料在空气中的氧化烧蚀

推进技术 ›› 2008, Vol. 29 ›› Issue (4): 488-493.

C/SiC复合材料在空气中的氧化烧蚀

张杰,魏鑫,郑力铭,孙冰

北京航空航天大学宇航学院;北京航空航天大学宇航学院;北京航空航天大学宇航学院;北京航空航天大学宇航学院

发布日期:2021-08-15

Ablation of C/SiC composite in oxygen-rich gas

School of Astronautics,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;School of Astronautics,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;School of Astronautics,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;School of Astronautics,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China

Published:2021-08-15

摘要/Abstract

摘要： 针对C/SiC复合材料进行了空气工作环境下的烧蚀研究。分析了C/SiC复合材料的氧化机理,研究了C/SiC材料的氧化烧蚀的影响因素。根据氧化机理,对不同温度下材料的氧化烧蚀进行了模拟,针对SiC材料建立了相应氧化剥蚀模型,并对平板材料的氧化情况进行了模拟计算,将计算结果进行剥蚀情况和非剥蚀情况下的比较讨论。计算结果表明,在不同的温度下C/SiC复合材料的氧化有不同的控制机理,SiO2层的剥蚀将导致SiC材料的氧化烧蚀率增加。

关键词: 烧蚀;C/SiC复合材料;氧化

Abstract: The theory of ablation of C/SiC composites was investigated,and effects on ablation process were introduced.Numerical simulation of ablation of C/SiC at different temperatures and a SiC flat panel in air considering erosion of the material were developed.The results were compared with those without erosion of the material.The erosion increased the material surface recession rate by 100 or 1 000 times.

Key words: Oxidative ablation;C/SiC;Oxidation

张杰,魏鑫,郑力铭,孙冰. C/SiC复合材料在空气中的氧化烧蚀[J]. 推进技术, 2008, 29(4): 488-493.