A new analytical solution of the ternary Gibbs–Duhem equation

Abstract

A thermodynamic inconsistency in the Pelton–Flengas analytical solution of the Gibbs–Duhem equation for ternary systems has been identified. A new analytical solution is presented and a reasonable calculation procedure is suggested. A sample calculation has been carried out for the Zn–In–Cd system, using a Fortran 77 computer program designed for the purpose. The results are in good agreement with those obtained graphically. The whole calculation only requires ca. 1 min computer time.