铅锑二元系热力学性质的研究

THERMODYNAMIC PROPERTIES OF Pb-Sb SYSTEM

本文根据Langmuir方法测定了Pb-Sb系在903K、973K、1073K三个温度下的活度,并用回归分析法求得了该二元系在903—1073K内两组元的活度系数与N_(pb)关系的数学模型为近似半规则溶液模型:■文中还进一步导出了该二元系的偏微分和积分热力学函数。

According to Langmuir principle of measuring vapor pressure, the activities of lead in Pb-Sb alloys at 903, 973, 1073K were determined. By means of regression analysis, the mathematical model of Pb concentration dependence of activity coefficients of Pb and Sb in liquid Pb-Sb alloys could be expressed as form of modification quasi-regular solutions between 903K and 1073K:In γPb=(-0.8377+(1688.7867/T)-(1138192.3360/T^2))(1-N_(Pb))^(1.4)In γSb=(-0.8377+(1688.7867/T)-(1138192.3360/T^2))[1-N_(pb)^(1.4)-3.5(1-N_...