Thermal conductivity and expansion of metal matrix composites.

摘要

The thermal conductivity near 10K was measured on three aluminum matrix composites: two with SiC particulates and one with SiC and Si particulates. The thermal expansion of the same materials was measured from 420K to 77K. The phonon contribution to the conductivity was determined to be approximately 10 percent of the total, with the remainder due to free electron heat transport. An equation for estimating the conductivity of the 6061 Al/SiC composite was derived.