There are always feedbacks from customers that in the production process of using high phosphorus electroless nickel plating solution, the service life of the plating solution is short. What is the reason?
The general high phosphorus electroless nickel plating solution is composed of nickel salt, reducing agent, complexing agent, buffer, stabilizer and other components.Its main component nickel salt is usually nickel sulfate, and the reducing agent is sodium hypophosphite.
Generally, the by-products obtained by high-phosphorus electroless nickel plating are sodium ions, sulfate ions and phosphate ions.With the progress of the high phosphorus electroless nickel plating reaction, nickel ions and phosphoric acid ions are continuously consumed in the plating solution.In order to make high phosphorus electroless nickel plating continue, it is necessary to continuously add nickel ions and phosphate ions.
With the progress of the reaction, the by-products of sodium ion, sulfate ion and phosphate ion in the plating solution increase continuously and accumulate more and more, and the viscosity of the plating solution increases with it.Usually, the products are prone to problems such as rough coating, blistering, streaks, and high stress within 6 cycles, and the deposition speed is also slow.By the 7th cycle, the deposition rate of the bath will drop to 40% of the original, and by the 8th cycle, it can no longer be used.
When there are a large number of by-products in the high phosphorus electroless nickel plating solution, the stability of the plating solution will be greatly reduced, the service life of the plating solution will be shortened, and the quality of the workpiece coating will be affected.The high phosphorus electroless nickel plating solution Ni-811 of Bigolly Technology is different from general high phosphorus electroless nickel products. It adds ingredients that can inhibit the production of by-products, greatly improves the stability of the plating solution, and effectively prolongs the use of the plating solution. The life can generally be carried out for 14 cycles.