压力浸渗制备石墨/铝复合材料及其热学性能  

Preparation and its thermal properties of graphite flakes/Al composites by pressure infiltration method

作　　者：童伟[1,2,3] 裴久阳[2,3] 陈名海[3] 刘宁[2] 徐文雷 

机构地区：[1]苏州阿罗米科技有限公司,江苏苏州215134 [2]合肥工业大学材料科学与工程学院,合肥230009 [3]中国科学院苏州纳米技术与纳米仿生研究所,江苏苏州215123

出　　处：《功能材料》2016年第B12期120-124,共5页Journal of Functional Materials

基　　金：江苏省工业支撑资助项目(BE2013833)

摘　　要：采用压力浸渗法制备了石墨/铝复合材料,研究了不同体积分数鳞片石墨对复合材料热学性能和组织的影响。结果表明,加入石墨片明显提高复合材料水平热导率,同时降低复合材料热膨胀系数和密度。当复合材料中石墨体积分数从23.9%增加到73.4%,复合材料水平热导率从234 W/(m·K)提高到402 W/(m·K),同时热膨胀系数降低至5×10-6/K,兼顾高热导率和低热膨胀系数的特点。Graphite flakes(Gf)/aluminum composites were prepared by pressure infiltration method. The influence of graphite flakes content on thermal properties of composites was investigated,and its microstructure and thermal properties of the composites were analyzed. The results showed that graphite flakes could increase the in-plane thermal conductivity and decrease the coefficient of thermal expansion and density of the composite. The in-plane thermal conductivity of composite increased from 234 W /(m·K) to 403 W /(m·K) by the graphite flakes volume fractions increasing from 23.9%to 73.4% in the composite.

关 键 词：压力浸渗 热管理材料 石墨/铝复合材料 

分 类 号：TB333[一般工业技术—材料科学与工程]