Abstract
During the last few years the development of inert anodes for the primary aluminium industry has advanced considerably. This update reviews results of tests on (1) anodes made of ferrites (Ni, Co and Zn) alone or in combination with nickel oxide and copper leading to the final composition Ni1-x-yFe2-xMyO4, where M is zinc and/or cobalt, x is from 0 to 0.5 and y is from 0 to 0.6; (2) anodes made of oxides (Ni, Li, Sn, Sb, Cu) alone or in combinations; and finally (3) anodes made of combinations of metal powders including Ni, Al, Fe, Cu and Zn. The studies examined the solubility in cryolite alumina melts, but also performance in electrolysis tests from which the results are discussed. Laboratory solubility tests revealed that compositions with limited corrosion (1–2 cm/y) exist and could be successful not only in laboratory but also in industrial cells.
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Pawlek, R.P. (2016). Inert Anodes: An Update. In: Tomsett, A., Johnson, J. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48200-2_150
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