Enthalpy and heat capacity of Cs72.9Bi27.1 alloy with a partly ionic character of interatomic interaction in the condensed state

Abstract

Abstract The enthalpy of solid and liquid Cs72.9Bi27.1 alloy was measured by a mixing method on a massive isothermal drop calorimeter in the temperature range of 432–1177 K. Approximation equations were obtained. The isobaric heat capacity and enthalpy change on melting were determined. The estimated errors for enthalpy and heat capacity were 0.5 and 1.5%, respectively. A significant positive deviation of the caloric properties from the additivity values was established. Tables of recommended values of caloric properties over the range from 298.15 K to 1175 K were developed.