PROCESSINGTECHNIQUESANDCHARACTERIZATIONOFCERAMICFIBERREINFORCEDALUMINIUMCOMPOSITES  

作　　者：Won Jong Choi Lu Ho Choi Department of Materials Engineering,Hankuk Aviation UniversityKoyang,Kyunggi do,Korea 

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》1996年第1期9-14,共6页南京航空航天大学学报（英文版）

摘　　要：This paper relates to the fabrication of aluminium matrix composites with various amounts of Al 2O 3 fiber and SiC whiskers by rheocasting, powder metallurgy process and liquid metal infiltration process. To analyze wetting characteristics, the cross sections of composites are examined by scanning electron microscopy(SEM). The bending tests and microhardness tests are performed to evaluate mechanical properties of composites. The results show that the composites produced by liquid metal infiltration give better properties than those produced by rheocasting or powder metallurgy process, primarily due to the decrease of porosity and reinforcement cluster. For liquid metal infiltration composites, a good adhesion between the fiber and matrix is found. Three points bending test results show that there is an increase in flexural modulus with reinforcement contents. In addition, a series of microhardness tests are conducted to determine the effect of heat treatment on the mechanical property of Al 2O 3/Al composites.论述了铝基复合材料的制造过程，着重用于涂覆、粉未冶金法与液压金属浸润法制造的材料。用扫描电镜观察材料截面，并用弯曲试验与微硬度试验测试材料的力学性能。结果表明，用液态金属浸润制造的材料性能较好。其原因是由于空隙与纤维束的减少，纤维与基体结合较好。三点弯曲试验表明，随着增强物的增加，弹性模量也增加。此外，还进行了一系列的微硬度试验。

关 键 词：composite materials metal matrix composites reinforced metal composite processing techniques 

分 类 号：TQ174.21[化学工程—陶瓷工业]