Ablation properties and ablation mechanism of C/C-Cu composites

被引：0

作者：

Ran, Li-Ping ^{[1
]}

Li, Wen-Jun ^{[1
]}

Yang, Lin ^{[1
]}

Yi, Mao-Zhong ^{[1
]}

机构：

[1] State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2010年 / 20卷 / 03期

关键词：

Carbon - Thermooxidation - Carbon carbon composites - Copper oxides - Titanium dioxide;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Novel carbon/carbon-copper (C/C-Cu) composites were fabricated by molten infiltration. The ablation characteristics with different ablation times were evaluated under O2-C2H2 ablation conditions. The phase compositions and microstructures of the composites before and after ablation were examined by XRD and SEM. The ablation mechanisms of the composites were discussed. The results show that the ablation time has a great effect on the ablation characteristics. Both the mass ablation rate and linear ablation rate increase with prolonging ablation time. After ablation, the original TiC phase is substituted by TiO2, and Cu2O is formed on the ablation surface of the composites. The ablation properties of the composites are better than those of the carbon/carbon composites. The ablation mechanisms of the C/C-Cu composite under the O2-C2H2 condition are synergistic effect of thermo-oxidation, thermo-physics ablation (sublimation) and mechanical erosion.

引用

页码：510 / 515