Статья

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

Omar AwayssaDepartment of Materials Science and Engineering, NTNU, Sem Sælands vei 12, Trondheim NO-7491, NorwayGeir Martin HaarbergDepartment of Materials Science and Engineering, NTNU, Sem Sælands vei 12, Trondheim NO-7491, NorwayRauan MeirbekovaReykjavik University, School of Science and Engineering, Menntavegi 1, 101, Reykjavik, IcelandGuðrún SævarsdóttirReykjavik University, School of Science and Engineering, Menntavegi 1, 101, Reykjavik, Iceland

2021en

ABI

Аннотация

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.

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Идентификаторы

DOI: 10.1016/j.elecom.2021.106985

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar