When we use chemical nickel plating solution for production, abnormal temperature may also cause thin plating and aborted plating reaction.
Abnormal plating temperature
During the chemical nickel plating reaction process, the rate of oxidation of hypophosphorous acid (H2PO2-) and the temperature is a positive correlation, when the higher the temperature of the bath solution, the faster the reaction rate will be, the more atomic hydrogen generated, and then accelerate the deposition of nickel layer.
When the temperature is lower than 70℃, the oxidation reaction of hypophosphite in chemical nickel plating can not be carried out, so it can not provide atomic hydrogen, resulting in nickel ions can not be reduced to nickel, then it will cause the production of chemical nickel plating to stop.
How to troubleshoot the cause
A plating plant once occured such problem, during the analysis and investigation, they found that as the temperature decreases, the initial reaction time is prolonged when the temperature is higher than 70 ℃ but lower than the process requirements of 82 ℃.H2PO2- and metal substrate (metal in the oxidation process of H2PO2- play a catalytic role in the middle of the reaction) react in the process for too long to cause a certain degree of passivation effect, resulting in a slow reaction.
Have you found it? When electroplating plant occurs malfunction, the causes are often various, if you want to quickly solve the problem, you need a high degree of technical strength. We know that now electroplating production is basically with the use of electroplating additives, when technical problems occur in the use of the process, electroplating additives suppliers can quickly provide solutions,because they understand their own products, as well as products behind the matching of the main salt content and process parameters.
Bigely can provide customers with electroless nickel plating solution as well as corresponding technical support programs.
If you are interested in nickel plating solution and other products and services, please feel free to contact us.