Abstract：Based on the critical re-assessment on the phase diagram and thermodynamic data available in literature of the Pd-X(X=Ag, Ni, Sn) systems, Gibbs energies of the liquid and FCC_A1 phases in three binary systems were described by the substitutional solution model. Three phase, PdSn2, PdSn3 and PdSn4,were described by the sublattice model of (Pd,Sn)1Sn2, (Pd)0.25(Pd,Sn)0.75, and (Pd)0.2(Pd,Sn)0.8, respectively. Thermodynamic parameters for the Pd-X(X=Ag, Ni, Sn) systems were then obtained by the CALPHAD (calculation of phase diagram) approach. The presently obtained thermodynamic parameters can describe the measured phase diagram and thermodynamic properties more reasonably comparing with the previous reports, especially in the phase diagram of Pd-Ag system and enthalpies of mixing of FCC_A1 in both Pd-Ag and Pd-Ni systems, as well as the Sn-rich side of the phase diagram of the Pd-Sn system. Comprehensive comparisons between the calculated results and experimental data indicated the accuracy of the presently obtained thermodynamic parameters.
廖林, 刘树红, 杜勇. 贵金属Pd-X(X=Ag, Ni, Sn)体系的相图热力学研究[J]. 粉末冶金材料科学与工程, 2022, 27(3): 246-256.
LIAO Lin, LIU Shuhong, DU Yong. Thermodynamic investigation on the Pd-X(X=Ag, Ni, Sn) systems of the precious metals. Materials Science and Engineering of Powder Metallurgy, 2022, 27(3): 246-256.
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