世界有色金属Issue(6)：20-23,4.
Lu-Mg和Lu-Al合金热力学性质的理论分析
Theoretical Analysis of Thermodynamic Properties of Lu-Mg and Lu-Al Alloys
摘要
Abstract
The mixing enthalpy,excess entropy,excess Gibbs free energy and the activity among all components of Lu-Mg and Lu-Al binary alloy melts were calculated using the Miedema model.According to the Butler's equation,the surface tensions of Lu-Mg and Lu-Al alloy melts and the content of all elements in the surface phase were calculated.The results indicate that the mixing enthalpy,excess entropy and excess Gibbs free energy of Lu-Mg and Lu-Al alloy melts are all negative.The activity of each component shows negative deviations compared to the ideal solution,indicating that Lu has stronger interaction with Mg and Al.The surface tensions of Lu-Mg and Lu-Al alloy melts decrease with the increase of Mg and Al content.Both Mg and Al elements are enriched towards the melt surface.关键词
Miedema模型/Butler方程/活度/表面张力/Lu-Mg/Lu-AlKey words
Miedema model/Butler equation/Activity/Surface tension/Lu-Mg/Lu-Al分类
金属材料引用本文复制引用
纪凡,何荧,向金秋,罗立平..Lu-Mg和Lu-Al合金热力学性质的理论分析[J].世界有色金属,2024,(6):20-23,4.基金项目
粒子输运与富集技术全国重点实验室稳定支持项目(GZ-WZJC-2023-04). （GZ-WZJC-2023-04）
