CHROMIUM-PLATED PART AND PRODUCTION METHOD THEREOF

Title:

CHROMIUM-PLATED PART AND PRODUCTION METHOD THEREOF

Document Type and Number:

Japanese Patent JP2015221944

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a chromium-plated part which has corrosion resistance in ordinary and specific environments and eliminates the need of additional treatments after chromium plating and its production method.SOLUTION: A chromium-plated part 1 includes a basis material, a glossy nickel plating layer 5b formed on the basis material 2, a noble potential nickel plating layer 5a which is formed on and adjacent to the glossy nickel plating layer 5b and has a potential difference between the glossy nickel plating layer 5b and it of 60-120 mV and a trivalent chromium plating layer 6 which is formed on and adjacent to the noble potential nickel plating layer 5a and has at least one of a microporous structure and a micro-crack structure.

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Inventors:

SUGAWARA SOICHIRO
SAKAI HIROSHI
HARTMANN PHILIP

Application Number:

JP2015157402A

Publication Date:

December 10, 2015

Filing Date:

August 07, 2015

Export Citation:

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Assignee:

NISSAN MOTOR
ATOTECH DEUTSCHLAND GMBH

International Classes:

C25D5/14; C25D3/56; C25D7/00; C25D15/02

Domestic Patent References:

JPH1025594A	1998-01-27
JPH05171468A	1993-07-09
JPH08100273A	1996-04-16
JPS5437564B2	1979-11-15
JP2010185116A	2010-08-26

Foreign References:

WO2006043507A1

2006-04-27

Other References:

JPN7015000985; ＭＩＫＥ　ＢＡＲＮＳＴＥＡＤ　ｅｔ．ａｌ．: 'Ｔｒｉｖａｌｅｎｔ　Ｃｈｒｏｍｉｕｍ　ｆｏｒ　ａ　Ｎｅｗ　Ｇｅｎｅｒａｔｉｏｎ' ｍｅｔａｌ　ＦｉｎｉｓｈｉｎｇＶｏｌ．１０７，Ｎｏ．１, 20090129, ｐ．２７-３０，３３
JPN7015000986; 渡邉和夫: '装飾３価クロムめっき技術' 表面技術Ｖｏｌ．５６，Ｎｏ．６, 2005, ｐ．２０-２４
JPN7014002202; ＭＡＲＫ　ＳＣＨＡＲＩＯ: 'Ｔｒｏｕｂｌｅｓｈｏｏｔｉｎｇ　Ｄｅｃｏｒａｔｉｖｅ　Ｎｉｃｋｅｌ　Ｐｌａｔｉｎｇ　Ｓｏｌｕｔｉｏｎｓ　（Ｐａｒｔ　ＩＩ　ｏｆ　ＩＩＩ　ｉｎｓｔａｌｌｍｅｎｔｓ）' ＭＥＴＡＬＦＩＮＩＳＨＩＮＧ , 200705, ｐ．４１-４４

Attorney, Agent or Firm:

Hidekazu Miyoshi
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu

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