Process of electrodepositing a corrosion resistant nickel-chromium coating

Claim 1

A METHOD FOR ELECTRODEPOSITING A DECORATIVE NICKEL PLATE WHICH COMPRISES THE 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 AND NICKEL SULFAMATE AND AT LEAST ONE SOLUBLE ORGANIC ADDITION AGENT CAPABLE OF PRODUCING SEMI-BRIGHT TO FULL BRIGHT NICKEL PLATE, SAID SOLUTION CONTANING DISPERSED THEREIN ABOUT 0.1 TO ABOUT 50 GRAMS/ LITER OF AT LEAST ONE WATER-INSOLUBLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE PHOSPHATES OF LEAD, ABOUT 0.1 TO 20 GRAMS/LITER OF LEAD CHROMATE, AND LEAD OXALATE, 0.1 TO ABOUT 5 GRAMS/LITER OF BARIUM CHROMATE, 1 TO ABOUT 50 GRAMS/LITER OF THE OXIDES AND HYDROXIDES OF COBALT AND NICKEL, AND 0.2 TO ABOUT 20 GRAMS/LITER OF THE STANNATES OF CALCIUM, STRONTIUM, BARIUM, MAGNESIUM, LEAD, NICKEL, COBALT, IRON, ANTIMONY AND BISMUTH, SAID MATERIAL BEING IN THE FORM OF A PARTICULATE DISPERSION THE PARTICLES OF WHICH HAVING AN ULTIMATE PARTICLE SIZE OF LESS THAN ABOUT 5 MICRONS AVERAGE DIAMETER, AND THEREAFTER PLATING ON SAID ELECTRO-DEPOSITED LAYER AN OVERLAYER OF A METAL SELECTED FRM THE GROUP CONSISTING OF CHROMIUM, RHODIUM, SILVER, TIN, BRASS, BRONZE, COPPER, GOLD AND AN ALLOY CONSISTING OF 65 TIN AND 35 NICKEL, SAID OVERLAYER HAVING A THICKNESS LESS THAN ABOUT 5 MICRONS.

Claim 2

A METHOD FOR ELECTRODEPOSITING A DECORATIVE NICKEL PLATE WHICH COMPRISES THE 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 AND NICKEL SULFAMATE AND AT LEAST ONE SOLUBLE ORGANIC ADDITION AGENT CAPABLE OF PRODUCING SEMI-BRIGHT TO FULL BRIGHT NICKEL PLATE, SAID SOLUTION CONTANING DISPERSED THEREIN ABOUT 0.1 TO ABOUT 50 GRAMS/ LITER OF AT LEAST ONE WATER-INSOLUBLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE PHOSPHATES OF LEAD, ABOUT 0.1 TO 20 GRAMS/LITER OF LEAD CHROMATE, AND LEAD OXALATE, 0.1 TO ABOUT 5 GRAMS/LITER OF BARIUM CHROMATE, 1 TO ABOUT 50 GRAMS/LITER OF THE OXIDES AND HYDROXIDES OF COBALT AND NICKEL, AND 0.2 TO ABOUT 20 GRAMS/LITER OF THE STANNATES OF CALCIUM, STRONTIUM, BARIUM, MAGNESIUM, LEAD, NICKEL, COBALT, IRON, ANTIMONY AND BISMUTH, SAID MATERIAL BEING IN THE FORM OF A PARTICULATE DISPERSION THE PARTICLES OF WHICH HAVING AN ULTIMATE PARTICLE SIZE OF LESS THAN ABOUT 5 MICRONS AVERAGE DIAMETER, AND THEREAFTER PLATING ON SAID ELECTRO-DEPOSITED LAYER AN OVERLAYER OF A METAL SELECTED FRM THE GROUP CONSISTING OF CHROMIUM, RHODIUM, SILVER, TIN, BRASS, BRONZE, COPPER, GOLD AND AN ALLOY CONSISTING OF 65 TIN AND 35 NICKEL, SAID OVERLAYER HAVING A THICKNESS LESS THAN ABOUT 5 MICRONS.