When we use medium phosphorus electroless nickel plating solution to produce, after the workpiece is plated with electroless nickel coating, it will go through the process of cleaning and drying.Does the workpiece need to be passivated after electroless nickel plating?
Bigolly Technology made an analysis based on the field experience and the characteristics of the product medium phosphorus electroless nickel plating solution Ni-809,In fact, the workpiece needs to be passivated after electroless nickel plating.Although different workpieces have different purposes and technical requirements, the follow-up treatment after electroless nickel plating is basically the same.Here, Bigolly Technology provides the post-treatment process of medium phosphorus electroless nickel plating:
1. Wash and dry.The purpose of this link is to remove the residual chemical plating solution on the surface of the workpiece and keep the plating layer with a good appearance.After the workpiece is plated with medium phosphorus chemical nickel, it should be quickly picked up and cleaned to ensure that there is no residual plating solution on the surface of the workpiece, and then the workpiece should be dried.
2. Passivation and sealing.Since the medium-phosphorus electroless nickel coating has a certain porosity, passivation or sealing treatment is required after the medium-phosphorus electroless nickel plating is completed, which can effectively improve the corrosion resistance of the workpiece.The high-phosphorus electroless nickel coating generally does not need to be sealed due to its low porosity or no porosity at all.
3. Heat treatment.The heat treatment of the workpiece is to improve the hardness of the electroless nickel coating to the hardness value required by the technical requirements. Generally, the heat treatment of the medium phosphorus electroless nickel coating is kept at 400 ° C for 1 hour.It should be noted that when heat treatment is performed, the alloy composition of the medium phosphorus electroless nickel coating needs to be determined first, so that the effect of heat treatment will be better.
Therefore, when we use medium phosphorus electroless nickel plating solution to produce, the plated workpiece needs to be passivated, so that the workpiece has a good coating appearance and good corrosion resistance.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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