Solubility Of Sc₂O₃ In Na₃Alf₆-K₃Alf₆-Alf₃ Melts
- Organization:
- The Minerals, Metals and Materials Society
- Pages:
- 8
- File Size:
- 200 KB
- Publication Date:
- Jan 1, 2015
Abstract
The electrolyte with high solubility for Sc2O3 is very important to realize the preparation of Al-Sc master alloy by the molten salt electrolysis. The solubility of Sc2O3 in K3AlF6- Na3AlF6-AlF3 melts is determined with an isothermal saturation method. The effects of KR (ratio of K3AlF6 to K3AlF6+Na3AlF6), the concentration of Al2O3 and the temperature on the solubility of Sc2O3 are also investigated. The results indicate that the solubility of Sc2O3 in K3AlF6-Na3AlF6-AlF3 melts increases and then decreases with KR increasing. The solubility of Sc2O3 is 8.698 wt.% in (K3AlF6-Na3AlF6)(KR25%)-18 wt.%AlF3 melts at 940℃. The effect of temperature on the solubility is little, and the values are 8.575 wt.% and 8.762 wt.% respectively when the temperatures are 930℃ and 960℃. The solubility decreases from 8.809 wt.% to 7.058 wt.% as the concentration of Al2O3 increases from 1.5 wt.% to 5.0 wt.% at 950℃.
Citation
APA: (2015) Solubility Of Sc₂O₃ In Na₃Alf₆-K₃Alf₆-Alf₃ Melts
MLA: Solubility Of Sc₂O₃ In Na₃Alf₆-K₃Alf₆-Alf₃ Melts. The Minerals, Metals and Materials Society, 2015.