Design of composites for thermal management: Aluminum reinforced with diamond-containing bimodal particle mixtures

被引:29
作者
Molina-Jorda, J. M. [1 ,2 ]
机构
[1] Univ Alicante, Inst Univ Mat Alicante, E-03080 Alicante, Spain
[2] Univ Alicante, Dept Quim Inorgan, E-03080 Alicante, Spain
关键词
Metal-matrix composites (MMCs); Thermal properties; Analytical modelling; Liquid metal infiltration; LIQUID-METAL INFILTRATION; MATRIX COMPOSITES; PRESSURE INFILTRATION; SIC PARTICLES; CONDUCTIVITY;
D O I
10.1016/j.compositesa.2014.12.006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A new design route is proposed in order to fabricate aluminum matrix diamond-containing composite materials with optimized values of thermal conductivity (TC) for thermal management applications. The proper size ratio and proportions of particulate diamond-diamond and diamond-SiC bimodal mixtures are selected based on calculations with predictive schemes, which combine two main issues: (i) the volume fraction of the packed particulate mixtures, and (ii) the influence of different types of particulates (with intrinsically different metal/reinforcement interfacial thermal conductances) on the overall thermal conductivity of the composite material. The calculated results are validated by comparison with measurements on composites fabricated by gas pressure infiltration of aluminum into preforms of selected compositions of particle mixtures. Despite the relatively low quality (low price) of the diamond particles used in this work, outstanding values of TC are encountered: a maximum of 770 W/m K for Al/diamond-diamond and values up to 690 W/m K for Al/diamond-SiC. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:45 / 51
页数:7
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