Patent attributes
The present invention is to provide a chrome-plated part having a corrosion resistance in normal and specific circumstances and not requiring additional treatments after chrome plating, and to provide a manufacturing method of such a chrome plated part. The chrome-plated part 1 includes: a substrate 2; a bright nickel plating layer 5b formed over the substrate 2; a noble potential nickel plating layer 5a formed on the bright nickel plating layer 5b. An electric potential difference between the bright nickel plating layer 5b and the noble potential nickel plating layer 5a is within a range from 40 mV to 150 mV. The chrome-plated part 1 further includes: a trivalent chrome plating layer 6 formed on the noble potential nickel plating layer 5a and having at least any one of a microporous structure and a microcrack structure.
