Thermodynamic properties of α-rhombohedral boron from 16.05 to 714.5 K

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Abstract

The enthalpy HTH298.15 and the heat capacity Cp of α-rhombohedral boron have been determined experimentally by mixing isothermal calorimetry in the temperature range 298.15–714.5 K. The equations HTH298.15 = f1(T) and Cp = f2(T) are obtained.

The smoothed values of the basic thermodynamic properties of α-rhombohedral boron were found by processing the experimental data on low temperature heat capacities measured by low temperature adiabatic calorimetry in the temperature range 16.05–317.9 K. A curve for the Debye temperature versusT is constructed.

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Paper presented at the 8th International Symposium on Boron, Borides, Carbides, Nitrides and Related Compounds, Tbilisi, October 8–12, 1984.

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