固体火箭技术2011，Vol.34Issue(6)：772-776,5.
多向编织炭/炭复合材料烧蚀/侵蚀特性研究
Investigation on ablation/erosion of 5D carbon/carbon composites
摘要
Abstract
The star-style AC arc heater was employed as the ground simulation system to investigate the ablation and erosion behavior of 5D carbon/carbon(C/C) composites. The ablation behavior was analyzed through observing the ablative surface temperatures and the material microstructures after ablation. The results show that under the effect of ablation/erosion coupling,the heating rate of ablative surface and the ablation equilibrium temperature increased, and the later increased about 200～300 ℃. The internal microstructure of 5D C/C led to non-uniform ablation of fibers, matrix and interface. The interface ablation destroyed the connection between the fiber bundle and the matrix,which made the fiber bundle and the matrix lose the support and form the ablation surface delaminates. A small amount of A12O3 particle deposited on the ablation surface. The fibers .which were perpendicular to the ablation surface, exposed and broke on account of the particle impact bending momentum. There were no acicular fiber structures compared with the thermo-chemical ablation, and the fiber fracture was flat. Particle erosion not only decreased the quality of the materials directly, but also made the surface loosen,which promoted the thermo-chemical ablation and mechanical erosion behavior,in addition, the linear ablation rate was also significantly increased.关键词
多向编织炭/炭复合材料/烧蚀性能/星型交流电弧加热器Key words
carbon/carbon composites/ ablative performance/ star-style AC arc heater分类
航空航天引用本文复制引用
许承海,孟松鹤,白光辉,韦利明,齐菲,胡江华..多向编织炭/炭复合材料烧蚀/侵蚀特性研究[J].固体火箭技术,2011,34(6):772-776,5.基金项目
国家安全重大基础研究项目(61391). （61391）
