Experimental investigation and thermodynamic description of the In–Sb–Sn ternary system

Phase equilibria in the In–Sb–Sn ternary system have been studied experimentally and calculated by the CALPHAD method. Solubility of indium in the SbSn phase was experimentally established. Our own SEM–EDX results were used together with the literature data for thermodynamic modeling of the Gibbs energy of the SbSn intermediate phase. Optimized phase diagrams of the isothermal sections at 100 °C and 300 °C were compared with the experimental results from this work and literature. Three calculated vertical sections were compared with the DTA results from this work and with available thermal analysis data reported in the literature. Some calculated thermodynamic functions are compared with experimental values reported in the literature. Reasonable agreement between calculations and experimental data was observed in all cases.