摘要
对机械搅拌法制备ＳｉＣ颗粒增强镁基复合材料的工艺过程进行了探索．着重研究了搅拌温度、搅拌头位置、搅拌速率以及搅拌时间等工艺因素对复合材料中ＳｉＣ颗粒分散性的影响．形成了一种制备微细ＳｉＣ颗粒（ｄ＝５μｍ）增强Ｍｇ－３Ａｌ基复合材料的工艺方法，并获得相应的工艺参数．采用这些工艺参数制备出的镁基复合材料颗粒分布均匀，基体晶粒得到细化，ＳＥＭ观察表明ＳｉＣ颗粒与基体结合较好．复合材料的拉伸强度和硬度得到提高．
The process of fabricating SiCp/Mg composite was investigated by stirring cast. The experimental results show that the process parameters, such as impeller position, stirring speed, stirring time and stirring temperature, have a marked influence on the distribution of SiCp in MMC. An optimum condition for obtaining a composite with homogeneous SiCp was given. The SEM analysis shows that the SiCp/matrix interface was bonded well. The tensile strength and hardness of the composite were improved.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
1997年第5期17-23,共7页
Journal of Southeast University：Natural Science Edition
基金
国家自然科学基金
关键词
镁
碳化硅
晶粒度
复合材料
工艺
magnesium
silicon carbide
grain size
composite
