Why do the edges and holes tend to yellow in blue zinc-nickel alloy passivation?

Why do the edges and holes tend to yellow in blue zinc-nickel alloy passivation?

Tue Jul 30 08:54:00 CST 2024

In zinc-nickel alloy plating and passivation treatment, yellowing phenomenon often occurs at the corners and holes, which seriously affects the overall aesthetic and protective performance. In this regard, the application of Bigely Zn-323 zinc-nickel alloy trivalent chromium blue zinc passivator effectively solves these problems. Today's article will help you analyze the advantages of Zn-323 and its merits in practical applications.

Principle of zinc-nickel alloy blue passivation

Zinc-nickel alloys are widely used in various industrial fields due to their good corrosion protection properties. However, zinc-nickel alloy passivation, especially blue passivation, is prone to yellowish coloration in the holes and corners. This is due to uneven current distribution in these areas, resulting in inconsistent passivation films.

Special features of Zn-323

Bigely Zn-323 zinc-nickel alloy trivalent chromium blue zinc passivator helps to solve these problems through a specific chemical composition. First, Zn-323 adjusts the pH of the passivation solution to ensure stability throughout the passivation process. In addition, Zn-323 has a wide range of solution pH, which not only improves the ease of operation, but also stabilizes the solution over a wide range to guarantee film consistency. This is especially important for corners and holes, etc., to avoid color deviation caused by uneven local current density.

Practical application effect

The use of Zn-323 shows good uniformity and stability in actual production. The reasonable chemical composition facilitates the formation of a uniform passivation film on the surface of complex structures and avoids yellowing of edges and holes. This characteristic makes Zn-323 perform well in various applications.

Conclusion

In summary, Bigely Zn-323 zinc-nickel alloy trivalent chromium blue zinc passivator, through its own chemical composition and the control of a wide range of PH values, the stability and consistency of the passivation film is greatly improved, especially in the treatment of edges and holes in the color consistency of the effect is obvious. Choosing Zn-323 not only makes it easier to operate and maintain in the production process, but also ensures the high quality and stability of the plated products, making it a great tool in the passivation treatment of zinc-nickel alloys.

If you have any demands for zinc-nickel alloy trivalent chromium blue zinc passivator, please feel free to contact us.