Abstract
Vapor-grown carbon fiver (VGCF)/Aluminum composites, which have high thermal conductivity, are fabricated in this paper. The thermal conductivity of the composites is about 2.5 times higher than that of the pure aluminum of the matrix if the direction of VGCF is aligned. To improve the thermal conductivity of the composite materials, small amount of CNTs are added to the composite materials. The composite materials added CNTs have about 20% higher thermal conductivity than the composite materials without CNTs. Finited Element Method (FEM) and Nan model are used to analyze the effect of the CNT addition. The increase rate of thermal conductivity due to the CNTs addition is analyzed well by the FEM analysis. Thermal conductivity is also calculated by Nan model using the results obtained by the FEM analysis.
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