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Diamond/Al metal matrix composites formed by the pressureless metal infiltration process

Published online by Cambridge University Press:  31 January 2011

William B. Johnson  and
B. Sonuparlak
William B. Johnson
Affiliation:
Lanxide Corporation, 1300 Marrows Road, P.O. Box 6077, Newark, Delaware 19714-6077
B. Sonuparlak
Affiliation:
Lanxide Corporation, 1300 Marrows Road, P.O. Box 6077, Newark, Delaware 19714-6077
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Abstract

Diamond particles are unique fillers for metal matrix composites because of their extremely high modulus, high thermal conductivity, and low coefficient of thermal expansion. Diamond reinforced aluminum metal matrix composites were prepared using a pressureless metal infiltration process. The diamond particulates are coated with SiC prior to infiltration to prevent the formation of Al4C3, which is a product of the reaction between aluminum and diamond. The measured thermal conductivity of these initial diamond/Al metal matrix composites is as high as 259 W/m-K. The effects of coating thickness on the physical properties of the diamond/Al metal matrix composite, including Young's modulus, 4-point bend strength, coefficient of thermal expansion, and thermal conductivity, are presented.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 5 , May 1993 , pp. 1169 - 1173
Copyright
Copyright © Materials Research Society 1993

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References

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