Abstract 1. A METHOD OF IMPROVING THE CORROSION PROTECTION OF A BASE METAL COMPRISING THE SUCCESSIVE STEPS OF: (A) ELECTRODEPOSITING A DECORATIVE LAYER OF NICKEL, COBALT OR AN ALLOY THEREOF OVER THE BASE METAL; (B) IMPINGING A SOLID PARTICULATE MATERIAL AGAINST THE DECORATIVE LAYER TO FORM AT LEAST 3000 MICRONICKS PER SQUARE INCH EXTENDING INTO, BUT NOT THROUGH, SAID DECORATIVE LAVER WITHOUT VISABLY DULLING THE SAME, THE SIZE OF SAID MICRONICKS NOT EXCEEDING ABOUT 8 MICRONS AT THE SURFACE OF SAID LAYERS; AND (C) DEPOSITING A LAYER OF CHROMIUM TO A THICKNESS OF AT LEAST ABOUT 5 MILLIONTH OF AN INCH OVER SAID DECORATIVE LAYER, SAID CHROMIUM LAYER BEING SUBSTANTIALLY CONTINUOUS BUT BEING CHARACTERIZED BY THE PRESENCE OF DISCONTINUITIES COINCIDING WITH THE MICRONICKS IN THE DECORATIVE LAYER.
A METHOD OF IMPROVING THE CORROSION PROTECTION OF A BASE METAL COMPRISING THE SUCCESSIVE STEPS OF: (A) ELECTRODEPOSITING A DECORATIVE LAYER OF NICKEL, COBALT OR AN ALLOY THEREOF OVER THE BASE METAL; (B) IMPINGING A SOLID PARTICULATE MATERIAL AGAINST THE DECORATIVE LAYER TO FORM AT LEAST 3000 MICRONICKS PER SQUARE INCH EXTENDING INTO, BUT NOT THROUGH, SAID DECORATIVE LAVER WITHOUT VISABLY DULLING THE SAME, THE SIZE OF SAID MICRONICKS NOT EXCEEDING ABOUT 8 MICRONS AT THE SURFACE OF SAID LAYERS; AND (C) DEPOSITING A LAYER OF CHROMIUM TO A THICKNESS OF AT LEAST ABOUT 5 MILLIONTH OF AN INCH OVER SAID DECORATIVE LAYER, SAID CHROMIUM LAYER BEING SUBSTANTIALLY CONTINUOUS BUT BEING CHARACTERIZED BY THE PRESENCE OF DISCONTINUITIES COINCIDING WITH THE MICRONICKS IN THE DECORATIVE LAYER.
Claim 2
Independent Claim
125 words
A METHOD OF IMPROVING THE CORROSION PROTECTION OF A BASE METAL COMPRISING THE SUCCESSIVE STEPS OF: (A) ELECTRODEPOSITING A DECORATIVE LAYER OF NICKEL, COBALT OR AN ALLOY THEREOF OVER THE BASE METAL; (B) IMPINGING A SOLID PARTICULATE MATERIAL AGAINST THE DECORATIVE LAYER TO FORM AT LEAST 3000 MICRONICKS PER SQUARE INCH EXTENDING INTO, BUT NOT THROUGH, SAID DECORATIVE LAVER WITHOUT VISABLY DULLING THE SAME, THE SIZE OF SAID MICRONICKS NOT EXCEEDING ABOUT 8 MICRONS AT THE SURFACE OF SAID LAYERS; AND (C) DEPOSITING A LAYER OF CHROMIUM TO A THICKNESS OF AT LEAST ABOUT 5 MILLIONTH OF AN INCH OVER SAID DECORATIVE LAYER, SAID CHROMIUM LAYER BEING SUBSTANTIALLY CONTINUOUS BUT BEING CHARACTERIZED BY THE PRESENCE OF DISCONTINUITIES COINCIDING WITH THE MICRONICKS IN THE DECORATIVE LAYER.