The High-Temperature Cu-Fe-S System: Thermodynamic Analysis and Prediction of the Liquid–Solid Phase Range

Abstract Thermodynamic modeling of the Cu-Fe-S liquid solution is carried in framework modified quasichemical model. The manifold nature solutions from highly metallic via sulfur-rich to pure sulfur described by one single Gibbs energy expression at 1 bar total pressure. model predictive ability an asymmetric versus symmetric approach thermodynamically analyzed with respect extrapolation scheme binary subsystems into ternary system. Without need adjustable parameters predictions potentials for phase are line experimental data available literature. High-temperature pyrrhotite optimized compound formalism and alloy phases taken consideration predict equilibria solution. Four isothermal four isoplethal sections demonstrate promising agreement between a large stock prediction.