In the production process of using medium phosphorus electroless nickel plating solution, there will always be particulate impurities in the plating solution.What effect do these particles have on the plating solution?
Bigolly Technology made an analysis based on the field experience and the characteristics of the product's medium phosphorus electroless nickel plating solution Ni-809,particle impurities mainly come from particles in raw materials, dust in the air, foreign matter in the plating tank, pollutants on the surface of the workpiece, active particles generated during the reaction process, and nickel hydroxide flocs formed during pH adjustment.These impurities have an impact on both the plating solution and the workpiece coating:
1. The influence on the plating solution.Medium phosphorus electroless nickel plating solution is a thermodynamically unstable system. Local overheating, high pH value or the influence of certain impurities will make these particles have catalytic effect.They will cause the plating solution to undergo a self-catalyzed reaction and produce more black powder, which can accelerate the spontaneous decomposition of the plating solution and make the plating solution scrapped in advance.
2. The influence on the coating.The content and particle size of impurity particles in the plating solution have a great influence on the neutral salt spray corrosion resistance and wear resistance of medium phosphorus electroless nickel coatings.The higher the content of impurity particles, the larger the particles, the thinner the effective thickness of the coating, the smaller the protective effect on the substrate, and the worse the corrosion resistance of neutral salt spray.
Therefore, when we use medium phosphorus electroless nickel plating solution to produce, we should strictly control the content and particle size of impurity particles in the plating solution, and the plating solution needs to be cyclically filtered to reduce the impact of these particulate impurities on the plating solution.If you are interested in medium phosphorus electroless nickel plating solution,please contact Bigolly customer service to get free samples and detailed technical information!
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