Degradation of CVD-SiC coated PIP-C/SiC composites exposed to the hot firing test based on MMH/N2O4 bipropellants

作者：Xiang Yang^*; Huang Lu ming; Chen Zhao hui

来源：Ceramics International, 2014, 40(7): 10303-10308.

DOI：10.1016/j.ceramint.2014.03.001

• Ceramic matrix composites
• High temperature corrosion
• Oxidation
• SEM
• XRD

Ablation property of CVD-SiC coated PIP-C/SiC composites was investigated by using a hot-firing test in a liquid propellant rocket motor. The effect of the combustion temperature was studied; then ablation mechanisms of coated composites were discussed. The degradation of PIP-C/SiC composites was determined by analyzing surface variations. Two different ablation modes of C/SiC composites were discussed. The coupling effects (thermal mechanical denudation and thermal chemical erosion) worsened the degradation of the coated PIP-C/SiC composites. CVD-SiC coating provided better protection for the composites under the MMH/N2O4 bipropellants tests.

• 出版日期2014-8
• 单位中国人民解放军国防科学技术大学