金属固溶体及其组元的性质
来源期刊：中南大学学报(自然科学版)1993年第3期
论文作者：谢佑卿
文章页码：332 - 341
关键词：固溶体; 交互作用方程; 偏摩尔性质; Au-Ni合金
Key words：solid solution; interactive equation; partial molar property; Au-Ni alloy
摘 要：本文介绍了二元固溶体性质的交互作用方程,交互作用导数方程,组元的平均摩尔性质与偏摩尔性质的关系式和它们之间的差值约束方程.以对Au-Ni合金系的体积分析为例证明宏观热力学中定义的固溶体组元的偏摩尔性质不仅在数值上不同于组元的平均性质,有时它们随浓度变化的趋势也与组元的平均性质变化趋势相反.虽然在统计热力学中能设计出多种固溶体组元平均性质随浓度的变化规律和多种交互作用方程,但只有对合金系的能量,体积以及更多的性质进行综合分析后方可做出正确选择.
Abstract: In this paper,nine interactive equations and corresponding differential interactive equa-tions have been introduced.The general relation of partial and mean molar properties of the components and theirdifferential constrained equation have been derived:(?)XA·△QA+xB·△QB=0Taking analysis of volume of Au-Ni alloy system as an example,it has been proved thatthe partial molar properties of components are,in general,not equal to the correspondingmean molar properties and sometimes their changes with concentration are opposite to thoseof the mean molar properties.In the statistic thermodinamics,many equations of propertiesof components and their interaction can be derived,but the correct choice of these equationcan be made only after systematic analysis for energy,volume and more properties of the al-loy system.
