Thermodynamic Properties of Ce–In–Ni Ternary Alloys

Abstract

The mixing enthalpies of the liquid Ce–In–Ni ternary alloys have been determined by isoperibol calorimetry along three sections: (Ce0.4In0.6)1–xNix (0 < x < 0.11), (In0.15Ni0.85)1–xCex (0 < x < < 0.12), and (Ce0.21Ni0.79)1–xInx (0 < x < 0.03). The mixing enthalpies and activities of components in the Ce–In–Ni ternary alloys are calculated using various models, chosen by critical analysis. The data obtained previously for the binary subsystems are used for calculations, and new experimental data for the ternary systems are employed to verify the reliability of the models. The melts mix with release of significant amounts of heat, and the activities of their components are characterized by negative deviations from ideal solutions.