3-5 September 2007
CERN
Europe/Zurich timezone

Carbon-metal composites for thermal management

4 Sep 2007, 11:25
20m
40-S2-D01 (CERN)

40-S2-D01

CERN

Geneva, Switzerland
Carbon-metal composites for thermal management Session 2: New Ideas / New Materials

Speaker

Javier Narciso (Alicante University)

Description

Carbon-metal matrix composites are a very attractive materials for thermal applications, given their very high thermal conductivity in at least two planes. Therefore, in an attempt to obtain a good thermal conducting material as well as a low Coefficient of Thermal Expansion (CTE), a mixture of reinforcements (graphite and carbon fibre) was infiltrated with liquid alloys. The role of two reinforcing materials are following: while graphite reinforcement increases thermal conductivity in the plane direction, the carbon fibre helps to reduce the CTE of the alloy in the same direction. In the present work, graphite-carbon fibre preforms were infiltrated with Al/Si and Ag/Si alloys by means of gas pressure to produce an anisotropic composite. The influence of the volume fraction in the thermal conductivity and CTE was evaluated. The experiments determined that the manufactured composites has a adequate thermal behaviour to be used as low cost materials in heat spreaders. Co-Authors: LOUIS Enrique (Alicante University), MOLINA Jose Miguel (Alicante University), PRIETO Richard (Alicante University).

Primary author

Javier Narciso (Alicante University)

Co-authors

Enrique Louis (Alicante University) Jose Miguel Molina (Alicante University) Richard Prieto (Alicante University)

Presentation Materials