AN EFFECT OF NH4SCN ON DEPOSITION OF Sn-Co AND Sn-Ni POWDERS IN A FLUORIDE-CHLORIDE ELECTROLYTE
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2020-01-01
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Abstract
The cyclic voltammetry method is applied to investigate the kinetics of tin, cobalt and nickel deposition as well as that of Sn-Co and Sn-Ni alloy powders in a fluoride-chloride electrolyte. The content of the components used and that of an ammonium rhodanide (NH4SCN) additive are varied. The conditions of Sn-Co and Sn-Ni alloy powders deposition are determined in electrolytes of a different composition. It is shown that the addition of NH4SCN of about 5 g L−1−10 g L−1 favors the alloying. The further increase of the additive concentration facilitates the formation of smooth coatings greatly suppressing that of powders.