【摘要】 基于Miedema二元合金生成热模型 ,结合自由体积理论 ,充分考虑超额熵 ,针对实际固态二元合金熔体 ,提出全浓度范围内的超额热力学函数的计算方法 ,分别推导出对有序、无序固态二元合金的全摩尔超额函数、偏摩尔超额函数、组元活度计算式·分别计算了固态无序合金Ag Au、有序合金Co Pt在 80 0K、1 2 73K温度下的各种超额热力学函数值 ,计算结果与实验值吻合良好·更多还原

【Abstract】 Based on Miedema’s model for calculating the formation heat of binary alloys by combining the free volume theory and considering excess entropy, the calculation method of excess thermodynamics functions for solid binary alloy systems was developed. The formulas of excess integral mole quantities, the partial mole quantities and the activity of component were derived in the article for solid ordered or unordered binary alloy systems. The excess thermodynamics functions for solid unordered Ag Au alloy at 800K and solid Co Pt alloy at 1?273?K were calculated.更多还原