abstract |
IN A METHOD OF ELECTROPLATING READILY OXIDIZABLE METALS AND ALLOYS, AN ARTICLE TO BE PLATED IS FIRST PICKED WITH A MIXTURE OF NITRIC ACID AND HYDROFLUORIC ACID OR A MIXTURE OF BORIC ACID AND HYDROFLUORIC ACID, IMMEDIATELY WASHED WITH AN ANHYROUS ORGANIC SOLVENT, DRIED BY AN INERT GAS OR UNDER VACUUM, DIPPED IN A PLATING BATH WITHOUT BEING EXPOSED TO THE ATMOSPHERE AND THEN AFTER A SHORT TIME ELECTROLYTICALLY PLATED. |