How to make electrolytic dissolution of nickel in an electroless nickel plating solution

摘要

How to improve the pH stability of the bath and the method, extending the life of an electroless nickel plating bath by avoiding an increase in the anion undesired in the present invention relates processes to minimize the addition of pH modifying additives. The method comprising depositing on a substrate an electroless nickel (a) Electroless nickel plating bath [SOLUTION] The method, the electroless nickel plating bath is preferably hypophosphite ion source and the nickel source a process which contain, immersing in the plating bath (2) nickel anode, using a cathode which is separated from the nickel bath (3) ion exchange membrane, a cathode containing the salt or acid includes a step of completing the circuit, and a step of flowing a current (4) the bath by using the liquid. nickel concentration is maintained by the nickel is dissolved in the plating bath, the hydrogen is released from the cathode. None [Selection Figure]