Abstract A model for the preparation of Ni-Co alloy coatings based on electrodeposition technology regulates the alloy composition and microstructure by optimizing parameters such as current density and plating temperature. The model is based on the traditional metal electrodeposition theory and combines grain refinement and elemental synergistic passivation mechanism to enhance the corrosion resistance of the plated layer. The experimental results show that the plating layer prepared at a current density of 4.0 A/dm 2 and a temperature of 50°C, with a Co content of 51.62%, has a corrosion current density of only 0.43 μA/cm 2 , which is 67.4% and 45.2% lower than that of the pure Cu and the single Co plating layer, respectively, and exhibits an excellent protective ability.
Ge et al. (Tue,) studied this question.