CHROME-PLATED PART AND MANUFACTURING METHOD OF THE SAME

Japanese Patent JP2009074170

A

To provide a chrome-plated part having high resistance to corrosion and providing a white silver design similar or equivalent to hexavalent chromium plating with decorative trivalent chromium plating as the base.

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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SUGAWARA SOICHIRO
KOYASU HIROAKI
SAKAI HIROSHI
GEISSLER JENS-ERIC
KEERS GRANT

JP2008217561A

April 09, 2009

August 27, 2008

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NISSAN MOTOR

C23C28/00; C25D3/06; C25D5/12; C25D11/38

JPH01298191A	1989-12-01
JPS58153795A	1983-09-12
JP2007039770A	2007-02-15
JPH03291395A	1991-12-20
JPH03229890A	1991-10-11
JP2009074168A	2009-04-09
JPH01298191A	1989-12-01
JPS58153795A	1983-09-12
JP2007039770A	2007-02-15
JPH03291395A	1991-12-20
JPH03229890A	1991-10-11

Tsuyoshi Hashimoto
Hiromichi Kobayashi
Tomioka Kiyoshi

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