Thermal conductivity of Al2O3/SiC platelet composites

abstract

The thermal conductivity of hot-pressed Al2O3/SiC platelet composites is determined as a function of the platelet content, from 0 to 30 vol.% of SiC. Existing heat conduction models are employed to discuss the experimental data. Data agree with the presence of an interfacial thermal resistance at the Al2O3/SiC grain boundaries, which precludes the effect of percolation on the thermal conductivity for the higher percentage of SiC platelets. The observed orientation effect on the thermal conductivity due to an alignment of the platelets is also modelled using the Hasselman's approach. The thermal conductivity of the SiC platelets is calculated from the effective thermal conductivity of the composites. (C) 2003 Elsevier Science Ltd. All rights reserved.

keywords

CARBIDE-WHISKER COMPOSITES; ALUMINA COMPOSITES; RESISTANCE; BEHAVIOR; CERAMICS

subject category

Materials Science

authors

Barea, R; Belmonte, M; Osendi, MI; Miranzo, P

Groups

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".