Calculation of activities in some gallium-based systems with a miscibility gap

摘要

The calculations of thermodynamic properties in some gallium-based systems with a miscibility gap - Ga-Tl. Ga-Hg and Ga-Pb are presented in this paper. The determination of the gallium activities in the mentioned liquid alloys was based on their known phase diagrams using the Zhang-Chou method for calculating activities from phase diagrams involving wo liquid or solid coexisting phases. The activities of gallium in Ga-Tl, Ga-Hg and Ga-Pb system were calculated in the 973-1273 K. 573-873 K and 1000-1100 K, temperature ranges, respectively. The activities of the other component in all the investigated systems were obtained by the Gibbs-Duhem equation. The results of the calculations are compared with literature data.