Method of forming a metal layer on a substrate

摘要

1,149,703. Coating with metals. INTERNATIONAL BUSINESS MACHINES CORP. Oct.5, 1967 [Dec.29, 1966], No.45430/67. Heading C7F. Prior to coating a substrate, which may be a plastic coated metal plate, with a metal by e.g. electroless plating, vapour deposition or sputtering, the surface is coated with a solution containing a metal salt and a plastics material, e.g. a polyimide, and the metal salt is reduced. The metal salt may be nickel hexachloropalladate, palladium nitride or palladium trimethylbenzyl ammonium nitride. The salt is reduced by heating in e.g. hydrogen or argon or dipping in sodium hypophosphite. A layer of Ni or Cu may then be electroless plated on the palladium. The coated substrate may be heated. A Ni-Fe or Cu layer may be electro-plated on the electroless layer.