What are the factors that affect the corrosion resistance of nickel sulfamate plating?

What are the factors that affect the corrosion resistance of nickel sulfamate plating?

Wed Jun 12 09:51:19 CST 2024

The corrosion resistance of nickel sulfamate plating layers can be influenced by a number of factors. In order to improve the corrosion resistance of nickel plating layers, the following key factors need to be managed and controlled:

1. Plating solution composition: The composition of the nickel sulfamate plating solution must be maintained at the proper level. The correct ratio of host salts, buffers, pH adjusters, wetting agents, and other additives is critical to the formation of a coating with good corrosion resistance.

2. Use of nickel sulfamate additives: Brighteners, levelers and other additives affect the structure and properties of the plated layer. Proper use of Bigely nickel sulfamate additives reduces porosity and improves densification of the plated layer, thereby increasing its corrosion resistance.

3. Operating parameters: Operating parameters such as current density, temperature and pH of the plating solution, and intensity of agitation have a direct effect on the quality of the coating. Improper parameters may result in stresses, cracks or other defects in the plated layer, reducing corrosion resistance.

4. Pre-treatment and post-treatment: Pre-treatment of workpieces, such as cleaning, degreasing, activation and other steps, must be carried out thoroughly to ensure good adhesion between the plating layer and the substrate. Post-treatment such as cleaning, drying and passivation can further improve the corrosion resistance of the coating.

5. Plating thickness: Thicker plating typically provides better protection, especially in harsh corrosive environments. However, the thickness of the nickel sulfamate plating needs to be balanced against other performance requirements such as hardness and stress.

6. Substrate quality: The material, surface condition and quality of the substrate have an important influence on the overall performance of the coating. A good substrate can reduce plating defects and enhance corrosion resistance.

When using Bigely nickel sulfamate additives, plating operators should strictly follow the plating process specifications and regularly inspect and test the quality of the plated layer to ensure that each factor is in proper condition. By optimizing these factors, a nickel sulfamate plating layer with high corrosion resistance can be obtained.

If you want to learn more about the process parameters for nickel sulfamate additives, please contact us.