How does electroless nickel increase salt spray corrosion resistance?

How does electroless nickel increase salt spray corrosion resistance?

Mon Apr 01 08:17:41 CST 2024

If you want to increase the salt spray test performance of electroless nickel plating layer, it means to improve the corrosion resistance of the coating in simulated Marine or salt corrosion environment. Typically, a salt spray test is an accelerated test used to assess the corrosion resistance of a material, and the coating is subjected to a high concentration of salt water mist over a period of time. In order to improve the performance of electroless nickel plating in salt spray testing, the following measures can be taken:

1. Coating alloying: By introducing elements such as phosphorus, boron or molybdenum into the plating solution, nickel-phosphorus alloy or nickel-boron alloy coating can be formed, among which, the coating with high phosphorus content usually has good corrosion resistance.

2. Coating thickness: Increasing the thickness of the electroless nickel plating layer can provide longer protection, because thicker coatings take longer to be corroded through.

3. Plating process control: Optimize the plating process, such as keeping the plating solution clean, controlling the plating temperature and pH value, the uniformity of the coating, etc., so as to obtain a more dense coating, reduce internal stress, reduce cracks and pores.

4. Increase the protective layer: Add an additional protective metal layer on the electroless nickel plating layer, such as a closure, so that the corrosion resistance can be strengthened on the basis of the original.

5. Regular maintenance and monitoring: Regular maintenance and monitoring of the production line and plating solution of electroless nickel plating to ensure the stability of coating quality and timely adjustment of process parameters to prevent quality problems.

The implementation of the above measures helps to improve the performance of the electroless nickel plating layer in the salt spray test, thus extending its service life in the corrosive environment. However, the specific operation needs to make corresponding adjustments according to the experimental results and actual needs. After using Bigely electroless nickel plating solution, we can also use it with nickel plating sealing agent, which can pass the salt spray test for 120 hours.

If you need electroless nickel plating solution and nickel plating sealant, please feel free to contact us.