Thermodynamic reassessment of the Sb-Sn and In-Sb-Sn systems

A modified version of the Sb-Sn phase diagram was proposed that includes both Sb2Sn3 and Sb3Sn4 compounds. Based on this modification, phase equilibria in the In-Sb-Sn system were calculated using a thermodynamic modeling approach. Thermodynamic models for the ternary liquid phase and solid solutions (SbSn) and (Sb2Sn3) were developed. The isopleths xSn = 0.2, 0.5, 0.8, vertical sections xIn/xSb = 3:1, 1:1, 1:3, liquidus surface projection, and isothermal section at 473 K were calculated. •A modified version of the Sb-Sn phase diagram.•Thermodynamic modeling of the system In-Sb-Sn.•Calculation of six vertical sections.•Calculated liquidus surface projection and isothermal section at 473 K.