Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell

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...

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Main Authors:	Omar Awayssa, Geir Martin Haarberg, Rauan Meirbekova, Gudrun Saevarsdottir
Format:	Article
Language:	English
Published:	Elsevier 2021-04-01
Series:	Electrochemistry Communications
Subjects:	Aluminium Manganese Aluminium-manganese alloys Electrodeposition Current efficiency
Online Access:	http://www.sciencedirect.com/science/article/pii/S1388248121000692

id	doaj-df29c86d72ca4bf0b7b9acca00bcd33c
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spelling	doaj-df29c86d72ca4bf0b7b9acca00bcd33c2021-04-16T04:48:29ZengElsevierElectrochemistry Communications1388-24812021-04-01125106985Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cellOmar Awayssa0Geir Martin Haarberg1Rauan Meirbekova2Gudrun Saevarsdottir3Department of Materials Science and Engineering, NTNU, Sem Sælands vei 12, Trondheim NO-7491, Norway; Corresponding author.Department of Materials Science and Engineering, NTNU, Sem Sælands vei 12, Trondheim NO-7491, NorwayReykjavik University, School of Science and Engineering, Menntavegi 1, 101, Reykjavik, IcelandReykjavik University, School of Science and Engineering, Menntavegi 1, 101, Reykjavik, IcelandThis 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.http://www.sciencedirect.com/science/article/pii/S1388248121000692AluminiumManganeseAluminium-manganese alloysElectrodepositionCurrent efficiency
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Omar Awayssa Geir Martin Haarberg Rauan Meirbekova Gudrun Saevarsdottir
spellingShingle	Omar Awayssa Geir Martin Haarberg Rauan Meirbekova Gudrun Saevarsdottir Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell Electrochemistry Communications Aluminium Manganese Aluminium-manganese alloys Electrodeposition Current efficiency
author_facet	Omar Awayssa Geir Martin Haarberg Rauan Meirbekova Gudrun Saevarsdottir
author_sort	Omar Awayssa
title	Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell
title_short	Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell
title_full	Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell
title_fullStr	Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell
title_full_unstemmed	Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell
title_sort	electrochemical production of al–mn alloys during the electrodeposition of aluminium in a laboratory cell
publisher	Elsevier
series	Electrochemistry Communications
issn	1388-2481
publishDate	2021-04-01
description	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.
topic	Aluminium Manganese Aluminium-manganese alloys Electrodeposition Current efficiency
url	http://www.sciencedirect.com/science/article/pii/S1388248121000692
work_keys_str_mv	AT omarawayssa electrochemicalproductionofalmnalloysduringtheelectrodepositionofaluminiuminalaboratorycell AT geirmartinhaarberg electrochemicalproductionofalmnalloysduringtheelectrodepositionofaluminiuminalaboratorycell AT rauanmeirbekova electrochemicalproductionofalmnalloysduringtheelectrodepositionofaluminiuminalaboratorycell AT gudrunsaevarsdottir electrochemicalproductionofalmnalloysduringtheelectrodepositionofaluminiuminalaboratorycell
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Electrochemical production of Al–Mn alloys during the electrodeposition of aluminium in a laboratory cell

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