Abstract

The mixing enthalpies of Si–Ga–Y ternary melts have been determined using high-temperature isoperibolic calorimetry at 1750K. The formation of these melts is accompanied by large exothermic heat effects. The thermodynamic behavior of Si–Ga–Y liquid alloys and the phase equilibria in the solid state have been compared. The thermodynamic properties of Si–Ga–Y melts were modeled by a regular associated solution theory, and Gibbs free energies of alloy formation have been evaluated. The liquid Si–Ga–Y alloys are characterized by well-developed short-range order of chemical compound type.

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