Thermodynamic assessment of the Sc–Sn system

The thermodynamic optimization of the Sc–Sn binary system was carried out with the help of CALculation of PHAse Diagram (CALPHAD) method. Sc5Sn3, Sc6Sn5, Sc11Sn10 and ScSn2 have been treated as stoichiometric compounds while a solution model has been used for the description of the liquid, HCP_A3 (α-Sc) and BCC_A2 (β-Sc) phases. The calculations based on the thermodynamic modeling are in good agreement with the phase diagram data and experimental thermodynamic values.