Electrodeposition of aluminium-titanium alloys from molten fluoride-oxide electrolytes

Autor: Omar Awayssa, Gudrun Saevarsdottir, Rauan Meirbekova, Geir Martin Haarberg
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Electrochemistry Communications, Vol 123, Iss , Pp 106919- (2021)
Druh dokumentu: article
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2021.106919
Popis: This study reports the direct production of an aluminium-titanium alloy during aluminium electrolysis in fluoride-based melts. Experiments were conducted in a laboratory cell dedicated to current efficiency measurements. The temperature was varied from 960 to 980 °C at a cathodic current density (CCD) of 0.9 A/cm2 and a cryolite ratio (CR) of 2.2. The titanium content was up to 1.0 wt%. Titanium was added in the form of a TiO2 precursor. Bath samples were collected regularly and analyzed with ICP-MS to observe the decay of titanium during electrolysis. The current efficiency for electrodeposition of Al–Ti alloys was estimated to be at least around 90%. The surface of the solidified metal deposits was mostly flat, but some deposits were partially deformed.
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