Title:
METHOD FOR OBTAINING DEPOSIT OF YELLOW GOLD ALLOY BY ELECTROPLATING WITHOUT USING TOXIC METAL
Document Type and Number:
Japanese Patent JP2011084815
Kind Code:
A
Abstract:
To provide a method for depositing a thick layer of a yellow gold alloy free of toxic metals.
The method is for depositing the gold alloy onto an electrode through electroplating, provided that the electrode is immersed in a bath containing an alkaline gold cyanide, metallic gold in the form of an organometallic compound, a wetting agent, a metal ion sequestering agent and a free cyanide. The bath contains copper in the form of a double cyanide of copper and potassium and silver in the form of a cyanide and enables deposition of the yellow gold alloy that shines like a mirror. The invention is related to the area of electrodeposition.
Inventors:
HENZIROHS CHRISTOPHE
PLANKERT GUIDO
PLANKERT GUIDO
Application Number:
JP2010232903A
Publication Date:
April 28, 2011
Filing Date:
October 15, 2010
Export Citation:
Assignee:
SWATCH GROUP RES & DEV LTD
International Classes:
C25D3/56; C25D3/58
Domestic Patent References:
| JP2006348383A | 2006-12-28 | |||
| JPS62164889A | 1987-07-21 | |||
| JPS62164890A | 1987-07-21 | |||
| JPH03100194A | 1991-04-25 | |||
| JPS5433834A | 1979-03-12 | |||
| JPS5414343A | 1979-02-02 |
Other References:
JPN6014018016; ＲＡＰＳＯＮ Ｗ Ｓ: 'Ｔｈｅ ｍｅｔａｌｌｕｒｇｙ ｏｆ ｔｈｅ ｃｏｌｏｕｒｅｄ ｃａｒａｔ ｇｏｌｄ ａｌｌｏｙｓ．' Ｇｏｌｄ Ｂｕｌｌｅｔｉｎ Ｖｏｌ．２３ Ｎｏ．４, 1990, Ｐａｇｅ．１２５-１３３, Ｓｐｒｉｎｇｅｒ
Attorney, Agent or Firm:
Masaki Yamakawa
Shigeki Yamakawa
Shigeki Yamakawa