| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology
|
| Presentation Title |
Electrowinning of Al-Sc Master Alloys in the LiF-AlF3-Sc2O3 Melts |
| Author(s) |
Andrei Iasinskii, Ilya Moiseenko, Dmitriy Varyukhin, Anastasia Saparova, Aleksandr Samoilo, Pavel Yuryev, Youjian Yang, Zhongning Shi, Zhaowen Wang, Peter Polyakov, Bernd Friedrich |
| On-Site Speaker (Planned) |
Andrei Iasinskii |
| Abstract Scope |
Aluminum-scandium master alloys are highly demanded products used to create multifunctional aluminum alloys and composites. The high cost of Al-Sc master alloys limits their widespread use in the automotive industry. This research investigates the possibility of producing Al-Sc master alloys through the electrolysis of the LiF-AlF3-Sc2O3 melt. The kinetic parameters of aluminum and scandium electrowinning were studied using voltammetry, stationary polarization, and electrolysis tests. The apparent limiting current density for the co-deposition of aluminum and scandium on a molybdenum cathode ranged from 1.28 to 1.97 A.cm–2 in the temperature range of 860 to 940 °C. Based on the electrochemical measurements, the parameters for galvanostatic electrolysis were selected, and electrolysis tests were carried out to obtain Al-Sc master alloys. The microstructure of the resulting Al-Sc master alloys was studied, revealing an achieved scandium concentration of 0.68 wt.%. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Electrometallurgy, Process Technology |