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 influ-ence 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 graph-ite flakes volume fractions increasing from 23.9% to 73.4% in the composite.
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