Electrical & Computer Engineering, Department of
ORCID IDs
https://orcid.org/0000-0001-6450-9015
https://orcid.org/0000-0002-1224-2942
https://orcid.org/0000-0002-5942-1999
Date of this Version
12-4-2019
Citation
2019 by the authors
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.
Comments
Materials 2019, 12, 4030; doi:10.3390/ma12244030 www.mdpi.com/journal/materials