ELECTROLESS PLATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an electroless plating method, which can ensure good adhesion between a plating film and a workpiece without using any noble metal such as palladium and without using any harmful chemical such as chromic acid and can permit repeated use of a plating solution.

SOLUTION: The electroless plating method includes: a step (1) of applying a polymer containing, as side chains, organic residues having the ability to reduce metallic ions of a plating metal onto the surface of a workpiece; a step (2) of depositing a partially reduced metal oxide of the metal ion on the surface of the workpiece with the applied polymer in a solution containing the metallic ions but not containing a reducing agent capable of reducing the metallic ions; a step (3) of reducing the partially reduced metal oxide into a self-catalytic plating metal in a solution containing a reducing agent capable of reducing the metal ions; and a step (4) of forming a coat of the plating metal on the surface of the workpiece in an electroless plating solution.

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