Aluminum/Carbon Composites Materials Fabricated by the Powder Metallurgy Process

Authors

Amélie Veillère, University of BordeauxFollow
Hiroki Kurita, Tohoku UniversityFollow
Akira Kawasaki, Tohoku UniversityFollow
Yongfeng Lu, University of Nebraska - LincolnFollow
Jean-Marc Heintz, University of BordeauxFollow
Jean-François SilvainFollow

ORCID IDs

https://orcid.org/0000-0001-6450-9015

https://orcid.org/0000-0002-1224-2942

https://orcid.org/0000-0002-5942-1999

Document Type

Article

Date of this Version

12-4-2019

Citation

2019 by the authors

Comments

Materials 2019, 12, 4030; doi:10.3390/ma12244030 www.mdpi.com/journal/materials

Abstract

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.