Abstract
The conditions and chemical composition of the non-freecyanide solution to silver plating had been investigated. The solution is well distributed. The quality of the plating is similar to the plating with free cyanide plating solution. Therefore, non- free cyanide phosphate solution could be replacing by the traditional cyanide silver plating. The appropriate composition and plating conditions are: 15 g/L Ag+; 30 g/L KH2PO4; 140 g/L K2HPO4; current density 0.4 A/dm2; temperature 60÷65oC. The received silver platings are pure, bright and smooth.
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