An all-sulfate solution is used for electro-depositing nickel where the anodes are insoluble. For example, plating the insides of steel pipes and fittings may require an anode.
A solution from which satisfactory deposits can be obtained at considerably higher current densities than are possible with conventional solutions has been developed. Using standardized plating conditions and with fixed concentrations of nickel chloride and boric acid, the concentration of nickel sulphamate has been varied and shown to permit the highest current density at 600 g/1. At 60°C, the maximum current density (400 A/ft2) is nearly twice that of conventional sulphamate solutions under the same conditions.
nickel sulphamate is used in the traditional surface treatment, in the electronics industry, aeronautics, electroforming, rapid “reel to reel” type coatings We recommend using depolarized nickel anodes or S nickel pellets in titanium baskets.
