Chromium electrodeposit and method of plating

Claim 1

THE METHOD OF PRODUCING A POROUS CHROMIUM ELECTROPLATE HAVING A SPONGY STRUCTURE INTO WHICH OIL IS READILY ABSORBED AND THROUGH WHICH OIL READILY PREMEATES WHICH COMPRISES ELECTROLYTICALLY DEPOSITING CHROMIUM ON A WORK PIECE CATHODE FROM AN AQUEOUS ELECTROLYTE CONTAINING FROM 150 TO 600 GRAMS PER LITER OF CRO3 AND A CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFATE IONS AND FLUORIDE IONS IN AN AMOUNT IN THE RANGE FROM 1/150 TO 1/80 THE WEIGHT OF THE CRO3, THE CURRENT DENSITY BEING MAINTAINED AT A VALUE EXCEEDING 12 AMPERERS PER SQUARE INCH OF CATHODE SURFACE AND THE TEMPERATURE OF THE ELECTROLYTE BEING SUBSTANTIALLY BELOW, AND SUFFICIENTLY LESS THAN THE VALUE INDICATED BY THE LINE BC ON FIG. 1 OF THE DRAWINGS FOR THE PARTICULAR CURRENT DENSITY EMPLOYED TO PRODUCE SAID POROUS, SPONGY CHROMIUM ELECTROPLATE.

Claim 2

THE METHOD OF PRODUCING A POROUS CHROMIUM ELECTROPLATE HAVING A SPONGY STRUCTURE INTO WHICH OIL IS READILY ABSORBED AND THROUGH WHICH OIL READILY PREMEATES WHICH COMPRISES ELECTROLYTICALLY DEPOSITING CHROMIUM ON A WORK PIECE CATHODE FROM AN AQUEOUS ELECTROLYTE CONTAINING FROM 150 TO 600 GRAMS PER LITER OF CRO3 AND A CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFATE IONS AND FLUORIDE IONS IN AN AMOUNT IN THE RANGE FROM 1/150 TO 1/80 THE WEIGHT OF THE CRO3, THE CURRENT DENSITY BEING MAINTAINED AT A VALUE EXCEEDING 12 AMPERERS PER SQUARE INCH OF CATHODE SURFACE AND THE TEMPERATURE OF THE ELECTROLYTE BEING SUBSTANTIALLY BELOW, AND SUFFICIENTLY LESS THAN THE VALUE INDICATED BY THE LINE BC ON FIG. 1 OF THE DRAWINGS FOR THE PARTICULAR CURRENT DENSITY EMPLOYED TO PRODUCE SAID POROUS, SPONGY CHROMIUM ELECTROPLATE.