| abstract |
(57) [Abstract] [Purpose] To provide a sealing treatment method which does not cause the problem of environmental pollution and has a sealing effect equal to or higher than conventional ones. [Structure] Gold, silver, rhodium, palladium, ruthenium and their alloy plating materials are superposed in an aqueous solution containing an organic compound having a corrosion inhibiting effect on one or more of the underlying metal or underlying metal components. A method for sealing a noble metal plated material, which comprises direct-current electrolyzing the plated material as an anode while irradiating a sound wave. |