Copper-scandium system: Thermodynamic properties of intermetallics and liquid alloys

Thermodynamic simulation of the binary Cu-Sc system is performed for a wide temperature range using experimental data on the thermodynamic properties of solid Cu-Sc alloys. The results obtained are used to estimate the thermodynamic functions of mixing and the activities of the components and to determine the composition of melts using an ideal solution model for interaction products. The calculated enthalpies of mixing at 1873 K agree adequately with the experimental data obtained by calorimetry.