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

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Title: Design of composites for thermal management: Aluminum reinforced with diamond-containing bimodal particle mixtures
Authors: Molina Jordá, José Miguel
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Metal-matrix composites (MMCs) | Thermal properties | Analytical modelling | Liquid metal infiltration
Knowledge Area: Química Inorgánica
Issue Date: Mar-2015
Publisher: Elsevier
Citation: Composites Part A: Applied Science and Manufacturing. 2015, 70: 45-51. doi:10.1016/j.compositesa.2014.12.006
Abstract: 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.
Sponsor: The author acknowledges the “Ministerio de Economía y Competitividad” for partial financial support trough project MAT2011-25029 and for a “Ramón y Cajal” contract.
ISSN: 1359-835X (Print) | 1878-5840 (Online)
DOI: 10.1016/j.compositesa.2014.12.006
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2014 Elsevier Ltd.
Peer Review: si
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Appears in Collections:INV - LMA - Artículos de Revistas

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