TY - JOUR
T1 - Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell
AU - Awayssa, Omar
AU - Haarberg, Geir Martin
AU - Meirbekova, Rauan
AU - Saevarsdottir, Gudrun
N1 - Publisher Copyright:
© 2021 The Author(s)
PY - 2021/4
Y1 - 2021/4
N2 - 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.
AB - 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.
KW - Aluminium
KW - Aluminium-manganese alloys
KW - Current efficiency
KW - Electrodeposition
KW - Manganese
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U2 - 10.1016/j.elecom.2021.106985
DO - 10.1016/j.elecom.2021.106985
M3 - Article
AN - SCOPUS:85102288994
SN - 1388-2481
VL - 125
JO - Electrochemistry Communications
JF - Electrochemistry Communications
M1 - 106985
ER -