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research article

Thermal conductivity of Al-SiC composites with monomodal and bimodal particle size distribution

Molina, J. M.  
•
Narciso, J.
•
Weber, L.  
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2008
Materials Science And Engineering A-Structural Materials Properties Microstructure And Processing

The thermal conductivity of aluminum matrix composites having a high volume fraction of SiC particles is investigated by comparing data for composites fabricated by infiltrating liquid aluminum into preforms made either from a single particle size, or by mixing and packing SiC particles of two largely different average sizes (170 and 16 mu m). For composites based on powders with a monomodal size distribution, the thermal conductivity increases steadily from 151 W/m K for particles of average diameter 8 mu m to 216 W/m K for 170 mu m particles. For the bimodal particle mixtures the thermal conductivity increases with increasing volume fraction of coarse particles and reaches a roughly constant value of 220 W/m K for mixtures with 40 or more vol.% of coarse particles. It is shown that all present data can be accounted for by the differential effective medium (DEM) scheme taking into account a finite interfacial thermal resistance. (c) 2007 Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.msea.2007.07.026
Web of Science ID

WOS:000255881300064

Author(s)
Molina, J. M.  
Narciso, J.
Weber, L.  
Mortensen, A.  
Louis, E.
Date Issued

2008

Published in
Materials Science And Engineering A-Structural Materials Properties Microstructure And Processing
Volume

480

Issue

1-2

Start page

483

End page

488

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMM  
Available on Infoscience
January 7, 2009
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/33246
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