【摘要】 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。更多还原

【Abstract】 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/T²））(1-N_Pb)^1.4In γSb=（-0.8377+（1688.7867/T）-（1138192.3360/T²））[1-N_pb^1.4-3.5(1-N_Pb)^0.4+2.5]In this paper, partial and integral molar thermodynamic functions of the Pb-Sb system are subsequently calculated.更多还原