The High-Temperature Cu-Fe-S System: Thermodynamic Analysis and Prediction of the Liquid-Solid Phase Range
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In: Journal of phase equilibria and diffusion, Vol. 43.2022, No. August, 21.09.2022, p. 495-510.
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TY - JOUR
T1 - The High-Temperature Cu-Fe-S System: Thermodynamic Analysis and Prediction of the Liquid-Solid Phase Range
AU - Waldner, Peter
PY - 2022/9/21
Y1 - 2022/9/21
N2 - Thermodynamic modeling of the Cu-Fe-S liquid solution is carried in the framework of the modified quasichemical model. The manifold nature of Cu-Fe-S liquid solutions from highly metallic via sulfur-rich to pure liquid sulfur is described by one single Gibbs energy expression at 1 bar total pressure. The model predictive ability of an asymmetric versus symmetric approach is thermodynamically analyzed with respect to the extrapolation scheme from the binary subsystems into the ternary system. Without the need of adjustable ternary parameters predictions of sulfur potentials for the liquid phase are in line with experimental data available in the literature. High-temperature pyrrhotite optimized via the compound energy formalism and Cu-Fe-S alloy phases are taken into consideration to predict phase equilibria with the liquid solution. Four isothermal and four isoplethal sections demonstrate promising agreement between a large stock of experimental data and prediction.
AB - Thermodynamic modeling of the Cu-Fe-S liquid solution is carried in the framework of the modified quasichemical model. The manifold nature of Cu-Fe-S liquid solutions from highly metallic via sulfur-rich to pure liquid sulfur is described by one single Gibbs energy expression at 1 bar total pressure. The model predictive ability of an asymmetric versus symmetric approach is thermodynamically analyzed with respect to the extrapolation scheme from the binary subsystems into the ternary system. Without the need of adjustable ternary parameters predictions of sulfur potentials for the liquid phase are in line with experimental data available in the literature. High-temperature pyrrhotite optimized via the compound energy formalism and Cu-Fe-S alloy phases are taken into consideration to predict phase equilibria with the liquid solution. Four isothermal and four isoplethal sections demonstrate promising agreement between a large stock of experimental data and prediction.
U2 - 10.1007/s11669-022-00988-z
DO - 10.1007/s11669-022-00988-z
M3 - Article
VL - 43.2022
SP - 495
EP - 510
JO - Journal of phase equilibria and diffusion
JF - Journal of phase equilibria and diffusion
SN - 1547-7037
IS - August
ER -