Abstract
The partial and integral enthalpies of mixing of liquid Cu-In-Sn alloys were determined at 1073 K by a drop calorimetric technique using a Calvet-type microcalorimeter. The three binary interaction parameters and the ternary interaction parameters were optimized based on the Redlich-Kister-Muggiano model. The iso enthalpy curves of the ternary Cu-In-Sn system at 1073 K were constructed. The temperature effect on the ternary system was investigated. Our measurements were compared to the calculations based on several extrapolation models and CALPHAD results.
