新型Al—Si复合材料制备工艺的研究  

The Research on the Techniques of Fabricating Si-particle Reinforced Al-based Composites

作　　者：郑晶[1] 王智民[1] 吴澎[1] 谢文江[1] 张冀粤[1] 

机构地区：[1]西安理工大学材料科学与工程学院,西安710048

出　　处：《金属材料研究》2006年第1期33-37,41,共6页Research on Metallic Materials

摘　　要：采用压力浸渗法制备硅颗粒增强铝基复合材料。与传统的粉末冶金法相比，具有成本低、工艺简单的优点，同时也很好地解决了铝与硅浸润性差的问题，通过理论计算与实际实验相结合，确定了制备工艺的参数，所制备的复合材料组织均匀，基体中的共晶组织可依附在颗粒表面形核生长，通过SEM分析没有发现氧化物以及金属间化合物的存在，这说明采用压渗法即使在没有气氛保护的情况下，也可以获得增强相分布均匀的，界面结合良好的材料。The pressure infiltration techniques fabricating Si-particle reinforced Al-based composites if compared with the conventioanl powder metallurgy have the characteristics of low cost and simple process. At the same time, the pressure infiltration techniques have solved the problems of low wet-ability of Al and Si. The writer ensured the parameters of technical preparation by combine theory calculation with experimentation. The composites fabricated have uniform microstructures and the eutectic structures in the matricx may attach to the surface of particle to nucleate and grow. No oxide and intermetallic compound exist in the matrix by SEM method. The results show that pressure infiltration can attain excellent material with uniformly distributed strengthening phases and well combined interface.

关 键 词：熔渗 硅颗粒增强 铝基复合材料 润湿性 流体力学 

分 类 号：TQ426[化学工程] TB331[一般工业技术—材料科学与工程]