Effects of Electrolytic Parameters on the Preparation of Al-Sc Master Alloy in Na3AlF6-K3AlF6-AlF3 Melt

被引：5
作者：
Yang, Kai [1 ]
Tian, Zhongliang [1 ]
Hu, Xun [1 ]
Lai, Yanqing [1 ]
Li, Jie [1 ]
机构：
[1] Cent South Univ, Sch Met & Environm, 932 Lushan South Rd, Changsha 410083, Hunan, Peoples R China
来源：
10TH INTERNATIONAL SYMPOSIUM ON HIGH-TEMPERATURE METALLURGICAL PROCESSING | 2019年
关键词：
Al-Sc master alloy; Electrolytic parameters; Na3AlF6-K3AlF6-AlF3; melt; Electrolysis; SCANDIUM;
D O I：
10.1007/978-3-030-05955-2_30
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of electrolytic parameters on the content of Sc in Al-Sc master alloy prepared by electrolysis in Na3AlF6-K3AlF6-AlF3 melt were studied. It is observed that the content of Sc in Al-Sc master alloy increases and then decreases with increasing the electrolysis temperature and the cathodic current density. Under the electrolysis condition (temperature 950 degrees C, cathodic current density 1.50 A cm(-2) and concentration of Al2O3 1.0 wt%), the content of Sc in the production is increased from 0.81 to 3.87 wt% as the value of the concentration ratio of Sc2O3 to Al2O3 ([Sc2O3]/[Al2O3]) increased from 2 to 6. The analysis of SEM indicates that the production of Al-Sc master alloy is composed of the aluminum and the Al3Sc. The distribution of Sc in Al-Sc master alloy is uniform.
引用
收藏
页码：321 / 327
页数：7
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