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Their electroforming process specifications, the properties of the nickel layer obtained and their process characteristics are shown in the following table.

 Process specification, nickel layer performance and process characteristics of electroforming nickel Click here to view all news pictures. Regardless of the electroforming solution selected, in order to obtain a good nickel layer and anti-anodic passivation, the nickel anode must be carefully selected. This is particularly important in sulfamate solutions with low chloride content. Generally, electrolytic nickel blocks or sulfur-containing depolarized nickel blocks (S nickel) are used in the titanium anode basket. The purity of electrolytic nickel is very high, it brings in few impurities when used, and the price is cheap.

The disadvantage is poor solubility. When the chloride content in the solution is low, the surface is easily passivated. High-temperature annealing can greatly improve its anodic solubility. S nickel contains sulfur (mass fraction) 0.01% to 0.04%, and its main advantage is high activity and can be used under high current density. The disadvantage is that the sulfur in the nickel block will produce sulfide residues, which should be prevented from contaminating the electroforming solution.