摘要
通过高温烧结TiC陶瓷骨架,金属Cu熔体真空无压自浸渗,制备出高致密度(>98%理论密度)的TiC-40%Cu(质量分数)金属陶瓷复合材料。对材料微观结构分析表明,在复合材料中TiC形成了连续的骨架结构,金属Cu填充到TiC骨架的孔隙中。材料的高温烧蚀试验结果表明,TiC/Cu复合材料在烧蚀过程中产生了“发汗冷却”效果,抗烧蚀性能与W/Cu材料相近,抗热震性比W/Cu材料差。TiC/Cu复合材料作为耐高温、抗烧蚀材料有实际应用前景。
High density TiC-40wt%Cu cermet composites are made by high temperature sintering of titanium carbide ceramic preform and pressureless infiltration of liquated copper alloy in vacuum. The microstructures of the composites indicate that a cont nected TiC ceramic skeleton is formed in the composites and Cu infiltrates in the porous areas of the skeleton. The tests of high temperature thermal ablation reveal that the TiC/Cu composites have the self-transpiration cooling effect. Compared with W/Cu alloy, TiC/Cu composites have the same thermal ablation resistance but lower thermal shock resistance properties. This new material finds a potential application in thermal ablation environment.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2006年第5期37-41,共5页
Ordnance Material Science and Engineering
基金
国家863项目
国防科工委的民口配套"十五"二批项目
关键词
TiC/Cu
复合材料
无压自浸渗
抗烧蚀
抗热震
TiC/Cu
composite
self-infiltration
ablation resistance
thermal shock resistance
