反应熔体渗透C/SiC复合材料的摩擦性能  

The Friction Properties of Reactive Melt Infiltration C/SiC Composites

作　　者：张军战[1] 徐永东[1] 张立同[1] 成来飞[1] 姜广鹏[1] 楼建军[1] 

机构地区：[1]西北工业大学超高温结构复合材料国防科技重点实验室,西安710072

出　　处：《材料工程》2005年第7期32-35,共4页Journal of Materials Engineering

基　　金：教育部跨世纪人才培养计划基金(2002)资助

摘　　要：以不同结构类型及密度的C/C复合材料为预制体,采用反应熔体渗透法制备了C/SiC复合材料,研究了不同结构C/SiC复合材料的密度、组分含量、热扩散系数与摩擦性能相互之间的关系。结果表明随着碳含量的降低,复合材料的密度增加;短切纤维C/SiC、低密度针刺C/SiC与高密度针刺C/SiC复合材料的平均摩擦系数分别为:0·28,0·28与0·42;随着热扩散系数的增加,复合材料的摩擦稳定性系数升高;并且对于短切纤维C/SiC,摩擦实验后基本形成了连续光亮的摩擦面。Taking C/C composites of different structure and density as preform, C/SiC composites were prepared by reactive melt infiltration. The relationship among density, component content, thermal diffusion coefficient and friction properties of C/SiC composites was studied. Results show that the density of C/SiC composites increases with the decrease of carbon content; that the average coefficient of friction of short fiber C/SiC, low density needle punched C/SiC and high density needle punched C/SiC composites are 0.28, 0.28 and 0.42, respectively; that the friction stability increases with the increase of thermal diffusion coefficient; and that successive slippery friction surface is formed for short fiber C/SiC composites after friction test.

关 键 词：反应熔体渗透 C/SIC 摩擦性能 热扩散系数 

分 类 号：TB332[一般工业技术—材料科学与工程]