Common problem

When using a medium-phosphorus electroless nickel plating solution, the deposition rate of the coating slows down. Have you paid attention to these points?

2022-01-06

    In the production process of using medium-phosphorus electroless nickel plating solution, sometimes the deposition rate of the back workpiece coating will slow down. What is the reason?

    Bigolly Technology has made an analysis based on field experience and the characteristics of the medium-phosphorus electroless nickel plating solution Ni-809 in the product. When the deposition rate of the coating slows down, do you pay attention to these points?

    1. The pH value of the electroless nickel plating solution is too low: adjust the pH value of the plating solution and control the pH at the lower limit. Although a higher pH value can increase the settling rate, it will affect the stability of the plating solution.

    2. The temperature of the plating solution is too low: During normal production, the temperature of the electroless nickel plating solution should be controlled between 86-92°C. When the temperature of the plating solution is too low, the deposition rate of the plating layer is slower, thereby reducing the production efficiency.


    3. Low concentration of the main components of the plating solution: adjust the main components of the plating solution through titration analysis. If the reducing agent is insufficient, add Ni-809H reductant replenisher; when the nickel ion concentration is low, add Ni-809A nickel replenisher.

    4. Too much phosphite: When there is too much phosphite in the plating solution, part of the plating solution needs to be discarded.

    5. The concentration of the stabilizer in the plating solution is too high: when the concentration of the stabilizer in the plating solution is high, the activity of the plating solution is poor, and the deposition rate of the plating layer is slow or does not deposit.Drain part of the plating solution, add a small amount of it several times with Medium phosphorus electroless nickel plating solution.

    Therefore, we need to pay attention to these 5 points in the production process of using the medium-phosphorus electroless nickel plating solution, which can effectively reduce the occurrence of failures.If you are interested in medium-phosphorus electroless nickel plating solution, please contact Bigolly customer service for free samples and detailed technical information!

    If you want to know more about copper plating, you can check "common  problem".