Abstract
The effects a noncyanide and ammonia-free alkaline sulfate bath containing triethanolamine (TEA) as a complexer and gelatin as brightener for production bright Zn-Co alloy containing 0.6 to 1.0 Co are studied. The study indicates that Zn-Co alloy deposits produced are smooth, uniform, and bright. The deposition potential for alloy deposition is more negative to zinc. Electrodeposition of Zn-Co alloy is the anomalous type. The Co content in the alloy is always less than that of cobalt content in the bath solution. Increase in current density Co in the alloy. Increase in temperature of the bath and stirring increase the Co in the alloy. Increase in the concentration of TEA and gelatin decreases Co in the alloy.
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