Chrome-plated part and manufacturing method of the same
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United States of America Patent
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May 16, 2017
Grant Date -
Sep 25, 2014
app pub date -
Jun 3, 2014
filing date -
Aug 30, 2007
priority date (Note) -
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Abstract
An nickel plating layer (5a) intended for corrosion current distribution is formed over a body (2), and a 0.05 to 2.5 micrometers thick surface chrome plating layer (6) made of trivalent chromium is formed on the surface thereof using basic chromium sulfate as a source of metal. Further on the same, a not less than 7 nm thick chromium compound film (7) is formed by cathode acidic electrolytic chromatin. The corrosion distribution nickel plating layer (5a) has a function of forming a microporous structure, a microcrack structure, or the both of the same in the surface chrome plating layer (6).
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