TiC颗粒增强钨基复合材料的烧蚀性能  

Ablation of TiC particle reinforced tungsten matrix composites

作　　者：宋桂明[1,2] 武英[3] 白厚善[3] 王玉金[1] 周玉[1] 雷廷权[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院 [2]北京矿冶研究总院,北京100044 [3]北京矿冶研究总院

出　　处：《中国有色金属学报》2000年第3期313-317,共5页The Chinese Journal of Nonferrous Metals

基　　金：航天工业总公司"九五"重点预研基金! ( 18.10 )

摘　　要：用自制的氧乙炔烧蚀装置对TiC颗粒增强钨基复合材料 (TiCp/W )的烧蚀性能进行了测试 ,同时用多波长比色高温计对烧蚀试样表面温度和用热电偶对试样背面温度进行了在线监测。复合材料的质量烧蚀率和线烧蚀率由低到高的排列顺序为 :W <30 %TiCp/W <40 %TiCp/W。TiC颗粒加入到W中可明显提高材料的抗烧蚀性能 ,而且TiC颗粒含量越高 ,材料的抗烧蚀性能越好。TiCp/W复合材料的烧蚀机理是W和TiC的氧化烧蚀和燃气流的机械冲刷。The ablation of TiC particle reinforced tungsten matrix composites (TiC p/W) was measured using a self made oxyacelene ablation equipment. A dynamic responding multiwavelength calorimetric pyrometer was employed to measure the temperature of the ablation surface, and a thermal couple was employed to measure the temperature of the back surface. The values of the mass ablation rate and linear ablation rate are in the order of W>30%TiC p/W>40%TiC p/W. The ablation resistance of the composites is greatly increased by the addition of TiC particles. Mechanical erosion and thermochemical oxidation are the main ablation mechanisms of TiC p/W composites. [

关 键 词：复合材料 烧蚀温度 氧化烧蚀 机械冲刷 钨基 

分 类 号：TB333[一般工业技术—材料科学与工程] V252.3[航空宇航科学与技术—航空宇航制造工程]