期刊
CERAMICS INTERNATIONAL
卷 46, 期 11, 页码 19191-19197出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.04.254
关键词
Graphite flakes; Cu; Ni; Thermal conductivity; Coefficient of thermal expansion
资金
- Innovation Foundation for Graduate Students School-enterprise Collaboration of Northwestern polytechnical University [XQ201912]
Thermal management of Al composites is a crucial issue to keep the promising performance and excellent reliability of the devices. We revealed a novel method to enhance the surface property of graphite flakes (GF) with Cu and Ni coatings by chemical plating way. Taking advantage of Cu and Ni co-doped GF and silicon powders, the GF@Cu@Ni/Si/Al composites were fabricated by vacuum pressure infiltration method. The GF@Cu-30@Ni-10 composites revealed about 2 times larger TC (474.4 W/m.K) and lower CTE 6.22 ppm/K than neat Al. Our strategy for highly TC offers not only the advanced process for dispersing reinforcements but also an extremely simple way for the anisotropic composites with high TC and low CTE.
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