Thermodynamic properties by levitation calorimetry ? V. High-temperature heat content of liquid gallium

Abstract

The heat content (enthalpy) of liquid gallium relative to the supercooled liquid state at 298.15 K has been measured by levitation calorimetry over the temperature range 1412–1630 K. Thermal energy increments were determined using an aluminum block calorimeter of conventional design. The sharp decrease of C p with increasing temperature observed just above the melting point does not persist up to the high temperatures of the present work. When combined with recent laser-flash calorimetry results from the literature, the present work indicates that C p is 26.46 ± 0.71 J · g-atom−1 · K−1 over the temperature range 587–1630 K.