Thermal conductivity of B2O3 glass under pressure |
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Authors: | O. Nilsson O. Sandberg G. Bäckström |
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Affiliation: | (1) Department of Physics, University of Umeå, S-901 87 Umeå, Sweden |
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Abstract: | The thermal conductivity, , of vitreous boron trioxide was measured, using a hot-wire procedure, from 170 to 570 K and under pressures of up to 1.7 GPa. The thermal conductivity at room temperature and zero pressure was found to be 0.52 W · m–1 · K–1. The values of the logarithmic pressure derivative, g = d(ln )/d(ln ), where is the density, were found to be 1.1 for uncompacted glass and 0.7 for glass compacted to 1.2 GPa. The variation of with temperature at constant density was approximately linear, with a positive slope of 1.38×10–3W·m–1·K–2. |
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Keywords: | high pressure thermal conductivity vitreous boron trioxide |
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