AI Article Synopsis
- Aluminum matrix composites reinforced with carbon fibers or diamond particles were created using a powder metallurgy process for thermal management applications.
- These composites do not react chemically due to an alumina layer on aluminum powder particles, allowing for a stable system.
- The addition of Al-Si alloys during the fabrication process improved the density and thermal properties of the composites, resulting in better thermal conductivity and thermal expansion characteristics than those without the alloys.
Article 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.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947589 | PMC |
| http://dx.doi.org/10.3390/ma12244030 | DOI Listing |
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