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Thermodynamic properties of the Pb-Sb-Bi ternary system

机译：PB-SB-BI三元系统的热力学性质

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The paper presents the results of the Pb-Sb-Bi ternary system thermodynamic study. Experimental data were obtained using the EMF method in the temperature range from 873 to 973 K. The alloys compositions related to the concentration triangle projections with ratios of antimony and bismuth mole fractions (N-Sb/N-Bi) equal to 1/3, 1 and 3, were studied. The values of partial molar(ex)Gibbs energy (Delta G(Pb)), entropy (Delta S-Pb), enthalpy (Delta H-Pb) and the corresponding excess characteristics (Delta G(Pb) and (Delta S-Pb) of lead in the binary and ternary liquid metal alloys were found using the optimized experimental dependencies of EMF (E-p) on lead mole fraction (N-Pb). The integral thermodynamic quantities were calculated using the Darken method. Isolines of integral excess Gibbs energy and entropy (Delta G(ex) and Delta S-ex), integral Gibbs energy, entropy and enthalpy (Delta G, Delta S and Delta H) for the Pb-Sb-Bi system are illustrated graphically. It is determined that Delta G(ex) and Delta S-ex values in the Pb-Bi-Sb ternary system at 973 K are small, which indicates a good miscibility of the studied system and the absence of a strong chemical interaction of the components. (C) 2019 Elsevier Ltd.
机译：本文介绍了PB-SB-BI三元系热力学研究的结果。使用从873至973k的温度范围内的EMF方法获得实验数据。与锑和铋摩尔分数比（N-Sb / N-Bi）的浓度三角形突起有关的合金组合物，其等于1/3，研究了1和3。部分摩尔（ex）Gibbs能量（Delta G（Pb）），熵（Delta S-Pb），焓（Delta H-Pb）和相应的过量特征（Delta G（Pb）和（Delta S-Pb ）在二元和三元液态金属合金中使用铅（EP）对铅摩尔分数（N-Pb）的优化实验依赖性而发现。使用变暗方法计算积分热力学量。积分多吉布斯能量的分离物图形地示出了PB-SB-BI系统的积分GIBBS能量，熵和焓（Delta G，Delta S和Delta H）的熵（Delta G（Ex）和Delta S-ex）。确定ΔG （EX）和PB-BI-SB三元系统中的ΔS-EX值在973 k下很小，这表明所研究的系统的良好混溶性和缺乏组件的强大的化学相互作用。（c）2019 Elsevier有限公司

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