Determination of thermal conductivity of silica dioxide Tarkosil T-50 nanopowder by laser flash technique

Abstract

Results of measuring the thermal conductivity coefficient of silica dioxide Tarkosil T-50 nanopowder by a laser flash technique are reported. Experimental data on thermal conductivity of nanopowder in vacuum, in different gas media, and at different temperatures were obtained. Comparative analysis of thermal conductivity was performed for the T-50 nanopowder and materials with close density values. Based on the experimental data, we obtained a mathematical model to determine the thermal conductivity coefficient of T-50 nanopowder in different gas media.