We all know that after using electroless nickel plating solution for a period of time, the plating solution will start to become unstable and decompose on its own.So how does the plating solution decompose on its own?
Share the four phenomena of the decomposition of the plating solution:
1. The gas slowly escapes from the bottom of the plating solution.When the bath begins to decompose on its own, the gas escapes not only on the surface of the workpiece, but also slowly and evenly throughout the bath.
2. The gas escape speed is accelerated.Self-decomposition of the plating solution has already occurred.If effective measures are not taken in time, the escape speed of gas will become faster and faster, and a large number of bubbles will be generated, making the plating solution into a foamy state.
3. The formation of black coating or suspension.When there is a lot of foam in the electroless nickel plating solution, the workpiece or the tank wall will start to form a rough black coating, or many irregular black granular suspensions will be produced in the plating solution.
4. The color of the plating solution becomes lighter.When the plating solution decomposes by itself, the color of the plating solution keeps getting lighter, because the concentration of nickel salts is decreasing.
Therefore, when we use electroless nickel plating solution for production, we need to take timely measures when the plating solution decomposes by itself to prevent further decomposition of the plating solution, effectively improve the stability of the plating solution, and save production costs.