Abstract
Electrolytic deposition of cadmium-zinc alloy powders from sulfate solutions is possible provided that the reduction of cadmium ions is performed under limiting diffusion current conditions. Simultaneous discharge of cadmium and zinc ions is not accompanied by super- and depolarization phenomena, which enables the alloy composition to be predicted using polarization curves of reduction of the two kinds of ion in individual solutions. Because of growth of the alloy deposit surface during galvanostatic deposition, the composition of the powder is a function of buildup time, and can be changed only by varying the solution composition. Consequently, it is best to produce such powders either under potentiostatic conditions or under galvanostatic conditions but with continual removal of deposited powder from the basis.
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