新型炭材料2012，Vol.27Issue(4)：311-314,4.
碳化铪含量对C/C复合材料喉衬烧蚀性能的影响
Effect of hafnium carbide content on the ablative performance of carbon/carbon composites as rocket throats
摘要
Abstract
Hafnium carbide (HfC) modified carbon/carbon (HfC-C/C) composites were prepared by impregnating carbon felts with a saturated HfOCl2·8H2O ethanol solution and heat treating at 600 ℃ to form HfO2/C composites that were then densified with pyrocarbon by chemical vapor infiltration and graphitized at 2 100 ℃ to convert HfO2 into HfC. The HfC-C/C composites as rocket throats were ablated at 7 MPa and around 3 200 ℃ for 3 s by an experimental solid rocket motor. Results showed that the HfC-C/C composites with HfC contents more than 5.7 mass% had a stable period with a constant ablation rate and the duration of this period increased with HfC content. The overall ablation rate was decreased by 25. 2 and 49. 6% for the composites having 5. 7 and 8.7 mass% HfC respectively as compared with the composite with 2. 5 mass% HfC.关键词
HfC/C/C复合材料/固体火箭发动机/烧蚀特性Key words
Carbon/carbon composites/ Solid rocket motor/ Hafnium carbide/ Ablation performances分类
通用工业技术引用本文复制引用
李淑萍,李克智,杜红英,张守阳,沈学涛..碳化铪含量对C/C复合材料喉衬烧蚀性能的影响[J].新型炭材料,2012,27(4):311-314,4.基金项目
高等学校学科创新引智计划项目(D08040),国家重点基础研究发展规划(973计划,2006CB600908). （D08040）
