Alkaline zinc-nickel alloy plating is a widely used corrosion protection technology in industry, especially important in working conditions where high corrosion resistance is required. In this paper, we will discuss the effect of nickel content on corrosion resistance in this process and recommend the use of Bigely alkaline zinc-nickel alloy additive BZ-617 to improve the quality of the plated layer.
Effect of nickel content on corrosion resistance
Alkaline zinc-nickel alloy plating layer has good corrosion resistance. The corrosion resistance of the plated layer is more appropriate when the nickel content is between 12% and 16%. This is because in this range, nickel improves the densification and homogeneity of the plated layer and reduces the pores that precipitate from the zinc, thus enhancing the protective effect.
Too much or too little nickel affects the performance of the plated layer
When the nickel content is too low, the phase structure of the plated layer is close to pure zinc, lacks sufficient mechanical stability, and is prone to rapid electrochemical reactions in a corrosive environment.
When the nickel content is too high (more than 20%), the plating layer will become too dense and hard brittle, not only easy to crack under the action of external forces, but also in some corrosive media nickel's own electrode potential will instead accelerate the corrosion process. Therefore, it is crucial to control the nickel content within a reasonable range.
Advantages of alkaline zinc-nickel alloy additives BZ-617
In practice, the selection of suitable plating additives can effectively control the nickel content in the plated layer and ensure the comprehensive performance of the plated layer. Bigely alkaline zinc-nickel additive BZ-617 has advantages in this respect.
Firstly, the additive can stabilize the chemical composition in the plating solution, which helps to obtain a stable nickel content over a wide range of current densities. Secondly, with the optimized additive formulation, BZ-617 can enhance the brightness and uniformity of the plated layer and further improve its anti-corrosion properties.
Conclusion
Nickel content is a key factor affecting corrosion resistance in alkaline zinc-nickel alloy plating processes. In ensuring that the nickel content is in the right range, the corrosion resistance of the plated layer can be improved. Bigely BZ-617 alkaline zinc-nickel additive offers a reliable solution for the plating process through its good performance. With the help of this additive, industrial users can obtain good quality plated layers for products in a variety of harsh environments.
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