SiC_p/AZ61镁基复合材料的热膨胀性能研究  

Thermal Expansion Behavior of SiC_p/AZ61 Magnesium Matrix Composites

作　　者：杜磊[1] 闫洪[1] 凌李石保[1] 

机构地区：[1]南昌大学先进成形制造及模具研究所

出　　处：《特种铸造及有色合金》2011年第1期70-72,106,共3页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(50765005);江西省高校科技创新团队资助项目

摘　　要：采用高能超声方法制备了SiCp增强镁基复合材料。论述了增强体、温度、增强体颗粒尺寸、增强体体积分数等对镁基复合材料热膨胀性能的影响。结果表明,增强体的加入可以减小镁基复合材料的热膨胀系数,镁基复合材料的热膨胀系数随温度的变化而变化,增强体的颗粒尺寸越小、体积分数越高,镁基复合材料的热膨胀系数就越小。SiCp particle reinforced magnesium matrix composites were prepared for electronic packaging field by high intensity ultrasonic method.Effects of some parameters,such as particle,temperature,particle size,and particle volumetric fraction,on thermal expansion behavior of the composites were described.The results show that thermal expansion coefficient of the composites is decreased with addition of particle,and it is changed with varying in temperature.Meanwhile,with decreasing in particle size and increasing in volumetric fraction,thermal expansion coefficient of the composites is decreased.

关 键 词：镁基复合材料 增强体 热膨胀性能 

分 类 号：TB331[一般工业技术—材料科学与工程]