Nickel sulfamate plating is a widely used plating process in industrial production, where the core objective is to obtain nickel coatings with high bonding strength and excellent physicochemical properties. In practice, the use of additives has a significant impact on the bonding strength of the plated layer. In this issue, we take a closer look at this issue.
Nickel sulfamate additives mainly include brighteners, leveling agents and wetting agents. Their mechanism of action is different, but the ultimate goal is to improve the bonding and uniformity of the plated layer.
1. Brightener:
The main function of nickel sulfamate brightener is to improve the appearance of the plated layer and make the surface of the plated layer bright and flat. brighteners form thin films in the plating solution, which are reduced on the cathode surface when current is passed through them to form a smooth plated layer. At the same time, brighteners also reduce the problem of uneven current density distribution, thereby improving the bonding of the plated layer.
2. Levelling agent:
Nickel sulfamate leveling agent interferes with the deposition process of nickel ions by adsorbing on the surface of the cathode, resulting in an increase in the surface flatness of the plated layer. The leveling agent effectively reduces the tendency of spontaneous nucleation, induces uniform growth of the plated layer on the surface of the substrate, and reduces microscopic defects. This adjustment results in a significant improvement in the bonding of the plated layer to the substrate.
3. Wetting agents:
The function of the wetting agent is to reduce the surface tension of the plating solution, improve the wetting performance of the plating solution and make the plating layer spread more evenly on the surface of the substrate. Wetting agent can improve the fluidity of the plating solution, reduce the adsorption of air bubbles and impurities, and thus improve the densification and bonding of the plating layer.
In conclusion, the effect of Bigely nickel sulfamate additives on plating bonding is multifaceted. Brighteners enhance surface brightness, leveling agents improve surface flatness, and wetting agents improve the wetting properties of the plating solution, all three of which work together to enhance the bonding of the plated layer to the substrate.
If you are interested in nickel sulfamate additives, please feel free to contact us.
