碳化硅纤维增强磷酸铝基复合材料的制备和性能研究  

Preparation and mechanical properties of unidirectional SiC fiber-reinforced aluminum phosphates composites

作　　者：王新鹏[1] 田莳[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100083

出　　处：《功能材料》2005年第11期1693-1695,1700,共4页Journal of Functional Materials

摘　　要：采用不同的磷酸铝盐基体制备了单向碳化硅纤维增强磷酸铝基复合材料,对其力学性能进行了对比,结果表明:基体对复合材料的力学性能和微观结构有极大的影响,磷酸铝基体随温度的升高脱水、相变残留下一定的气孔,填料的加入可以提高复合材料的整体力学性能;采用磷酸二氢铝基体、-αAl2O3填料制备的复合材料具有最好的性能,其弯曲强度为310MPa、弯曲弹性模量为47GPa,并通过扫描电镜对材料的微观结构形貌进行了分析研究。Unidirectional SiC fiber-reinforced aluminum phosphates composites were prepared by several kinds of aluminum phosphates matrixes, and their mechanical properties were investigated. The results show that the matrix have significant effect on mechanical properties and microstructure of the composites, lot of pores are left in the matrix after the dehydration and phase transformation of aluminum phosphates. The mechanical performance of the composites was improved by the addition of the fillers. Composite, fabricated by Al（H2PO4）3 matrix and α-Al2O3 filler, shows better mechanical property, with a flexural strength of 310MPa and flexural modulus of 47GPa. The microstructure morphology of the composites was examined by SEM （scanning electronic microscope）.

关 键 词：磷酸铝 碳化硅纤维 陶瓷基复合材料 

分 类 号：TB34[一般工业技术—材料科学与工程]