Title:
METHOD FOR REMOVING RARE EARTH IMPURITIES IN NICKEL ELECTROPLATING SOLUTION
Document Type and Number:
WIPO Patent Application WO/2014/156761
Kind Code:
A1
Abstract:
This method for removing rare earth impurities in a nickel electroplating solution is characterized in that after rare earth compounds are added to a nickel electroplating solution containing rare earth impurities, and the solution is maintained in a heated state for a fixed time at 60°C or above, precipitates precipitated by the heat are removed from the nickel electroplating solution by sedimentation and/or filtering together with the rare earth compounds that were added.
Inventors:
KAMACHI MASANAO (JP)
Application Number:
PCT/JP2014/057107
Publication Date:
October 02, 2014
Filing Date:
March 17, 2014
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
C25D21/18
Domestic Patent References:
| WO2013047340A1 | 2013-04-04 |
Foreign References:
| JPH02209500A | 1990-08-20 | |||
| JPS61533A | 1986-01-06 | |||
| JP2006077271A | 2006-03-23 | |||
| JP2002194600A | 2002-07-10 |
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
Kitsuma Takaishi (JP)
Kitsuma Takaishi (JP)
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