Electroless nickel plating is widely used in various industrial fields, but pinholes often occur when the thickness of the plated layer is large, thus affecting the bonding and overall quality of the plated layer. In this issue, we will introduce how nickel plating wetting agent can improve the quality of electroless nickel plating layer and avoid the problem of pinhole plating.
Causes of pinhole problems in electroless nickel plating layers
Pinholes appear when the plating layer of the electroless nickel plating process is too thick, mainly due to the retention of hydrogen bubbles on the cathode surface, these bubbles will prevent the plating solution from uniformly distributing on the surface of the workpiece, resulting in a discontinuous plating layer, which in turn will form tiny pinholes. These pinholes may in turn affect the bonding strength, corrosion resistance and appearance of the coating.
Solutions
Bigely nickel plating wetting agent Ni-382 is designed to solve this problem. Its main effects include the following:
1. Improvement of bonding: The formulation of Ni-382 enhances the dispersion of the plating solution, effectively reduces the generation of hydrogen bubbles and makes the plating layer more uniform and complete, thus improving the bonding between the plating layer and the substrate.
2. Reduce the interfacial tension of nickel-plating solution: Reducing the interfacial tension helps the plating solution to flow better and cover the surface of the workpiece, reduces the interfacial resistance between the plating solution and the workpiece bubbles, and fundamentally prevents the formation of pinholes.
3. Improve the activity of the plating solution: Ni-382 can obviously improve the catalytic activity of the plating solution, which makes the process of plating layer formation more rapid and uniform, and improves the denseness and finish of the plating layer.
4. Good wetting ability: The wetting agent has excellent wetting ability, which can make the plating solution spread on the surface of the workpiece better, and further prevent the retention of hydrogen bubbles, thus avoiding the emergence of pinhole phenomenon of the plating layer.
Conclusion
Overall, Bigely nickel plating wetting agent Ni-382 effectively solves the problem of pinholes in nickel electroless nickel plating by improving bonding, lowering interfacial tension, increasing bath activity and providing good wetting ability, which improves the quality of the plated layer.
If you are interested in nickel plating wetting agent and electroless nickel plating process, please feel free to contact us.
