Abstract

Thermal conductivity of a two-phase (solid—solid) powder system was measured using a semi-absolute static method. Measurements were made on dish-form samples having fixed porosity. Zinc oxide (ZnO) and magnesium oxide (MgO) powders were chosen to be the continuous solid phase. Each was mixed with different concentrations of graphite (the discontinuous phase). The experimental results have been compared with the available theoretical models for estimating either an effective thermal conductivity of such a system or lower and upper bounds of this property.

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