摘要
采用粉末冶金熔体自浸渗工艺制备了相对密度大于98%的TiC/Cu复合材料,并对其耐烧蚀与耐热震性能进行了研究。TiC/Cu复合材料在等离子烧蚀过程中产生了“发汗冷却”效果,随着复合材料中Cu含量的提高,TiC/Cu的弯曲强度与耐热震性能显著提高。TiC陶瓷骨架相对密度为72%的TiC/Cu复合材料的弯曲强度达到955 MPa,较热压纯TiC陶瓷材料有大幅度的提高。
TiC/Cu ceramic-metal composites are produced by means of powder metallurgy pressureless infiltration method and the composites＇relative density is higher than 98%. The ablation resistance and thermal shock resistance properties of TiC/Cu are presented in this paper. In plasma ablation test, a ＂sweat cooling＂ process is observed during ablation. The tensile strength and thermal shock resistance are increased with the increase of Cu content. The bending strength is 955 MPa when the relative density of TiC skeleton is 72%. TiC/Cu ceramic-metal composite can be used as a light ablation resistance material.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2007年第2期62-65,共4页
Aerospace Materials & Technology
基金
国家"863"计划资助项目(2003AA305050)
关键词
TiC/Cu复合材料
熔渗
耐烧蚀
耐热震
TiC/Cu composite, Infiltration, Ablation resistance, Thermal shock resistance
