本文已被：浏览 3195次 下载 20次
中文摘要: 简要介绍了铝-钪合金的优异性能，发展现状；提出了利用未经高度提纯的氧化钪，直接在电解槽中电解铝-钪合金的工艺方案；对该方案的反应热力学数据进行了计算，并利用Miedma模型对钪在铝中的活度系数进行了计算。结果表明：在电解条件下（1223K），钪与铝共同析出时，在铝液中的平衡活度最大可以达到2.33%。加之钪与铝生成稳定的高熔点化合物，使钪在铝中的活度系数远小于1，从而使在电解槽中直接生产含钪在2%左右的铝钪合金成为可能。
中文关键词: 铝－钪合金 电解 热力学 活度系数
Abstract:The excellent performance and the development of Al-Sc alloys are introduced. The preliminary scheme, that using the impure oxides of Scandium to electrolyze to get Al-Sc alloys directly in an electrobath, has been studied. The thermodynamical feasibility of this scheme is analyzed, and the activity coefficient of Sc in Al-Sc alloys is calculated by using Miedema's model. The results show that the equilibrium activity of Sc in Al-Sc alloy can attain to 2.33% when the system is in electrolyze condition (at 1 223K) and Sc & Al separate together. At the same time, the activity coefficient of Sc in Al-Sc alloys much less then 1 due to a stable compound with very high melting temperature was formed. So it will be possible to receive the Al-Sc alloy with 2% Sc in electrobath directly.
文章编号： 中图分类号：TG146.21 文献标志码：
基金项目:
引用文本：
杨昇,李强,顾松青.电解铝钪合金的热力学[J].有色金属（冶炼部分）,2003(2):26-29.
.The Thermodynamics of Electrolysis Al Sc Alloys[J].Nonferrous Metals (Extractive Metallurgy),2003(2):26-29.
杨昇,李强,顾松青.电解铝钪合金的热力学[J].有色金属（冶炼部分）,2003(2):26-29.
.The Thermodynamics of Electrolysis Al Sc Alloys[J].Nonferrous Metals (Extractive Metallurgy),2003(2):26-29.
关注微信公众号