Aluminium/Carbon composites materials fabricated by the powder metallurgy process

Amélie Veillere (1) , Hiroki Kurita (2) , Akira Kawasaki (2) , Yongfeng Lu (3) , Jean-Marc Heintz (1) , Jean-François Silvain (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 Department of Materials Processing Engineering
3 Department of Electrical Engineering

Aluminum matrix composites reinforced with carbon fibers or diamond particles have been fabricated by a powder metallurgy process and characterized for thermal management applications. Al/C composite is a nonreactive system (absence of chemical reaction between the metallic matrix and the ceramic reinforcement) due to the presence of an alumina layer on the surface of the aluminum powder particles. In order to achieve fully dense materials and to enhance the thermo-mechanical properties of the Al/C composite materials, a semi-liquid method has been carried out with the addition of a small amount of Al-Si alloys in the Al matrix. Thermal conductivity and coefficient of thermal expansion were enhanced as compared with Al/C composites without Al-Si alloys and the experimental values were close to the ones predicted by analytical models

Mots clés: Al/C composite materials; carbon fiber; diamond particle; semi-liquid route; thermal management; powder processing

Domaines: Matériaux

Amélie Veillere, Hiroki Kurita, Akira Kawasaki, Yongfeng Lu, Jean-Marc Heintz, et al.. Aluminium/Carbon composites materials fabricated by the powder metallurgy process. Materials, 2019, 12 (24), pp.4030. ⟨10.3390/ma12244030⟩. ⟨hal-02467090⟩