Abstract
SummaryThe method of the rotating disc electrode was used for the potentiodynamic investigation of zinc deposition on steel from alkaline zincate electrolytes. The effect of two types of additives -basic and brighteners, as well as their combinations on the cathodic characteristics of zinc electrode position was established.The measurements under controlled hydrodynamic conditions show that zinc deposition from electrolytes without additives is always mass transport limited and that deposits are powdery. In the presence of additives the deposition is kinetically controlled and smooth compact zinc is formed.The inhibition influence of the additives on the electrochemical reduction of zinc was also estimated. The data were correlated with Hull cell experiments.
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