Electrodeposition of fine-grained lustrous nickel

Claim 1

A METHOD FOR ELECTRODEPOSITING A FINE-GRAINED LUSTROUS PLATE WHICH IS ESSENTIALLY NICKEL COMPRISING STEP OF ELECTROLYZING AN AQUEOUS ACIDIC SOLUTION OF AT LEAST ONE NICKEL SALT SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFATE, NICKEL CHLORIDE, NICKEL FLUOBORATE, NICKEL SULFAMATE AND MIXTURES OF AT LEAST ONE SAID NICKEL SALT WITH UP TO ABOUT 40 GRAMS PER LITER OF AT LEAST ONE SALT SELECTED FROM THE GROUP CONSISTING OF THE SULFATES, CHLORIDES, FLUOBORATES AND SULFAMATES OF COBALT AND IRON AND AT LEAST ONE SOLUBLE ORGANIC ADDITION AGENT CAPABLE OF PRODUCING SAID FINE-GRAINED LUSTROUS PLATE, SAID BATH CONTAINING DISPERSED THEREIN ABOUT 10 TO ABOUT 500 GRAMS PER LITER OF AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICON CARBIDE, BORON CARBIDE, TITANIUM CARBIDE, SILICON DIOXIDE, MANGANESE OXIDE, TITANIUM OXIDE, ZIRCONIUM OXIDE, ALUMINUM OXIDE, CERIC OXIDE,FERRIC OXIDE, CHROMIC OXIDE, BORON NITRIDE, CALCIUM FLUORIDE,STRONTIUM FLUORIDE, BARIUM FLUORIDE, ZINC SULFIDE, CADMIUM SULFIDE AND IRON SILICIDE, SAID MATERIAL IN SAID BATH BEING IN THE FORM OF A FINE POWDER, THE SIZE OF WHICH IS LESS THAN ABOUT 2 MICRONS AVERAGE DIAMETER, CONTINUING SAID ELECTROLYSIS UNTIL AN ADHERENT DECORATIVE NICKEL PLATE IS FORMED ON SAID SURFACE, AND THEREAFTER ELECTRODEPOSITING THEREON AN OVERLAYER OF A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, RHODIUM, SILVER, TIN, BRASS, BRONZE, COPPER, GOLD AND AN ALLOY CONSISTING OF ABOUT 65% TIN AND ABOUT 35% NICKEL.

Claim 2

A METHOD FOR ELECTRODEPOSITING A FINE-GRAINED LUSTROUS PLATE WHICH IS ESSENTIALLY NICKEL COMPRISING STEP OF ELECTROLYZING AN AQUEOUS ACIDIC SOLUTION OF AT LEAST ONE NICKEL SALT SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFATE, NICKEL CHLORIDE, NICKEL FLUOBORATE, NICKEL SULFAMATE AND MIXTURES OF AT LEAST ONE SAID NICKEL SALT WITH UP TO ABOUT 40 GRAMS PER LITER OF AT LEAST ONE SALT SELECTED FROM THE GROUP CONSISTING OF THE SULFATES, CHLORIDES, FLUOBORATES AND SULFAMATES OF COBALT AND IRON AND AT LEAST ONE SOLUBLE ORGANIC ADDITION AGENT CAPABLE OF PRODUCING SAID FINE-GRAINED LUSTROUS PLATE, SAID BATH CONTAINING DISPERSED THEREIN ABOUT 10 TO ABOUT 500 GRAMS PER LITER OF AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICON CARBIDE, BORON CARBIDE, TITANIUM CARBIDE, SILICON DIOXIDE, MANGANESE OXIDE, TITANIUM OXIDE, ZIRCONIUM OXIDE, ALUMINUM OXIDE, CERIC OXIDE,FERRIC OXIDE, CHROMIC OXIDE, BORON NITRIDE, CALCIUM FLUORIDE,STRONTIUM FLUORIDE, BARIUM FLUORIDE, ZINC SULFIDE, CADMIUM SULFIDE AND IRON SILICIDE, SAID MATERIAL IN SAID BATH BEING IN THE FORM OF A FINE POWDER, THE SIZE OF WHICH IS LESS THAN ABOUT 2 MICRONS AVERAGE DIAMETER, CONTINUING SAID ELECTROLYSIS UNTIL AN ADHERENT DECORATIVE NICKEL PLATE IS FORMED ON SAID SURFACE, AND THEREAFTER ELECTRODEPOSITING THEREON AN OVERLAYER OF A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, RHODIUM, SILVER, TIN, BRASS, BRONZE, COPPER, GOLD AND AN ALLOY CONSISTING OF ABOUT 65% TIN AND ABOUT 35% NICKEL.