Author： Fellner P. Danielik V. Thonstad J.
Publisher： Springer Publishing Company
ISSN： 0021-891X
Source： Journal of Applied Electrochemistry, Vol.30, Iss.8, 2000-08, pp. : 925-928
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Abstract
The contents of sodium, lithium, calcium and magnesium in aluminium in contact with NaF–AlF_3-based melts in laboratory and in industrial aluminium cells were investigated in the temperature range 950–1030 ^∘C. The experimental data were compared with a thermodynamic model. It was found that the addition of alumina or CaF_2 to the NaF–AlF_3 melts has only a minor effect on the equilibrium content of sodium in aluminium. Cathodic polarization enhances the content of sodium in aluminium. However, polarization has a smaller effect on the concentrations of lithium, calcium and magnesium in aluminium in industrial cells.
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