Abstract
High-quality Zn–Mn coatings with an Mn content reaching 50% are obtained from citrate–sulfate solutions in pulsed electrolysis at a pulse length of 0.1 ms to 1 s. Due to the formation of a blocking film of citrate–hydroxide zinc compounds, cathodic potential increases with time, which helps reach a codeposition potential of Mn ions. An electrolysis with a pulsed current superposed on a dc increases the Mn content and makes no impact on the coating quality.
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Danilov, F.I., Gerasimov, V.V. & Sukhomlin, D.A. Pulsed Electrodeposition of Zinc–Manganese Alloys. Russian Journal of Electrochemistry 37, 308–310 (2001). https://doi.org/10.1023/A:1009037616542
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DOI: https://doi.org/10.1023/A:1009037616542