The Effects of Additives on the Properties of Non-Cyanide Electroless Gold Plating Deposition

In order to improve the non-cyanide electroless gold plating deposition performance, the effects of the kinds of additives as well as its concentration on the deposition performance were investigated. The appearance inspection, deposition rate, adhesive force, surface morphology and corrosion resistance were evaluated. The results showed that the introduction of appropriate additives did improve the coating properties. The optimal concentration of polyethylene glycol and polycrylamide were 0.6~1.0 g·L-1 and 1.0~1.5 g·L-1, respectively. The corrosion resistance of the coating deposited in baths containing polyacrylamide was best.