SiC_p/Al复合材料抗弯性能研究  

Study on the bending performance of SiC_p/Al composites

作　　者：张建云[1] 邹晋[1] 周贤良[1] 华小珍[1] 

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《功能材料》2008年第4期584-585,589,共3页Journal of Functional Materials

基　　金：江西省自然科学基金资助项目(2007GZC1634);航空科学基金资助项目(2007ZF56016)

摘　　要：利用空气气氛下的无压渗透法制备了高体积分数的SiCp/Al复合材料,研究了颗粒粒径、基体合金成分、预处理工艺对复合材料抗弯性能的影响,并采用SEM观测了复合材料抗弯断口形貌。结果表明,SiCp/Al复合材料的抗弯强度随着SiC颗粒粒径减小而增大;基体材料的强度越高,复合材料的抗弯强度越高;复合材料整体上表现出脆性断裂的特征。SiCp/Al composites were fabricated by pressureless infiltration technique under air atmosphere condition. The effect of several factors such as diameter of particle, metal of matrix and pretreatment techniques on bending strength was investigated. The fracture morphology of composites was observed by SEM. The result shows that the bending strength of SiCp/Al composites is increased with the decreasing of particle diameters. The higher is the matrix metal strength, the higher is the composites bending strength. Composites have the character of brittleness fracture.

关 键 词：SICP/AL复合材料 抗弯强度 无压渗透 

分 类 号：TB331[一般工业技术—材料科学与工程]