The electroless nickel plating process is favored by industry for its ability to uniformly plate nickel on the surface of a workpiece without the need for an applied current. However, electroless nickel plating layers are often deficient in corrosion resistance due to their relatively high porosity, especially in salt spray tests, which limits their application in some harsh environments. In order to improve the corrosion resistance and extend the service life of electroless nickel plating layers, platers often use nickel-plated aqueous sealers for post-treatment.
Some customer inquired that how many hours of neutral salt spray test can the passivated workpiece reach during the production process using electroplated colored zinc passivator.
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.
In the bright nickel plating process, the use of nickel plating brightener is one of the key factors, they are usually divided into primary brightener and secondary brightener, each of which has its own specific function and role.
In the pyrophosphate copper plating process, the Hull cell test is a conventional method used to evaluate the performance of plating solutions and process parameters. However, when the bright area of the test piece plating is on the small side, it may suggest some potential problems that need to be emphasized and solved.
Zinc-nickel alloy coatings are widely used in many industrial applications due to their excellent corrosion resistance, high hardness and good decorative properties. Black passivation is a surface treatment process that provides better protection for zinc-nickel alloy coatings and gives them an attractive black surface. However, during the black passivation process, the surface of the coating is prone to coloration, which affects the appearance and corrosion protection. The coloration is caused by the non-uniformity of the passivate layer and is usually due to the following reasons:
