| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroless nickel plating method where zinc in a nickel strike plating liquid is efficiently recovered, and the service life of the nickel strike plating liquid can be elongated while maintaining a high plating rate and high plating quality. SOLUTION: In the electroless nickel plating method where aluminum, magnesium, titanium or the alloy thereof subjected to zinc substitution treatment is dipped into a nickel strike plating liquid, is subjected to nickel strike plating, and is thereafter subjected to functional plating, the nickel strike plating liquid is brought into contact with an extract comprising an acid organic phosphorous compound to extract zinc, and thereafter, the nickel strike plating liquid subjected to the extraction treatment is reused. COPYRIGHT: (C)2005,JPO&NCIPI
|
