KURITA, Hiroki; FEUILLET, Emilien; GUILLEMET, Thomas; HEINTZ, Jean-Marc; KAWASAKI, Akira; SILVAIN, Jean-François

doi:10.1007/s40195-014-0106-7

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KURITA, Hiroki
Laboratoire des Technologies des Matériaux EXtrêmes [LTMEx]

FEUILLET, Emilien
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GUILLEMET, Thomas
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Acta Metallurgica Sinica. 2014, vol. 27, n° 4, p. 714-722

Springer Verlag

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The constant increase in power and heat flux densities encountered in electronic devices fuels a rising demand for lightweight heat sink materials with suitable thermal properties. In this study, discontinuous pitch-based carbon fiber reinforced aluminum matrix (Al-CF) composites with aluminum-silicon alloy (Al-Si) were fabricated through hot pressing. The small amount of Al-Si contributed to enhance the sintering process in order to achieve fully dense Al-CF composites. A thermal conductivity and CTE of 258 W/(m K) and 7.0 9 10-6 /K in the in-plane direction of the carbon fibers were obtained for a (Al 95 vol% ? Al-Si 5 vol%)-CF 50 vol% composite. Carbon fiber provides the reducing of CTE while the conservation of thermal conductivity and weight of Al. The achieved CTEs satisfy the standard requirements for a heat sink material, which furthermore possess a specific thermal conductivity of 109 W cm 3 /(m K g). This simple process allows the low-cost fabrication of Al-CF composite, which is applicable for a lightweight heat sink material.< Réduire

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Carbon fiber

Metal-matrix composites (MMCs)

Thermal properties

Powder processing

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Simple fabrication and characterization of discontinuous carbon fiber reinforced aluminum matrix composite for lightweight heat sink applications

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