Abstract
This study reports the direct production of an aluminium–manganese alloy during aluminium electrolysis in fluoride-based melts. Experiments were conducted in a laboratory cell dedicated for current efficiency measurements. The temperature was varied from 965–980 °C at a cathodic current density (CCD) of 0.9 A/cm2 and a cryolite ratio (CR) of 2.2. The manganese content was up to 3.0 wt%. Manganese was added in the form of Mn2O3. Bath samples were collected regularly and analyzed with ICP-MS to observe the decay of manganese during electrolysis. It was possible to produce Al-Mn alloys of up to 21 wt. % Mn. Current efficiency for the electrodeposition of Al–Mn alloy was estimated to be in the range of 93%. Current efficiencies with respect to aluminium were estimated. The solidified surfaces of the metal deposits were mostly flat, but some were deformed.
Original language | English |
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Number of pages | 106985 |
Journal | Electrochemistry Communications |
Volume | 125 |
DOIs | |
Publication status | Published - Apr 2021 |
Other keywords
- Aluminium
- Manganese
- Alloys
- Electrodeposition
- Efficiency
- Ál
- Málmblendi
- Rafskaut
- Skilvirkni