Thermodynamic assessment of the Hg–Tl system

The phase diagram and thermodynamic properties of the Hg–Tl binary system were modeled by means of the CALPHAD method, using experimental information as reported in the literature. A good agreement was observed between our calculated data and the existing experimental data. Also, an interesting result was established about the dependence of entropy and enthalpy of mixing functions on temperature, and at the same time, on practically ideal activity vs. concentration. The Gamma phase was described for the first time using the substitional RKMP model.