IP Library › Granted Patent US 8,486,235
Granted Patent B2
US 8,486,235 · App. 12/896,673 · Granted Jul 16, 2013

Alkaline zinc-nickel bath

Inventor: Ernst-Walter Hillebrand (Wickede, DE)
Assignee: EWH Industrieanlagen GmbH & Co. KG
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Quick Facts
Patent No.
US 8,486,235
App. No.
12/896,673
Granted
Jul 16, 2013
Kind
B2
Abstract

The anode is separated from the alkaline electrode to avoid undesirable secondary reactions in an alkali zinc nickel electroplating bath.

Claims (4)

1. Alkaline electroplating cell ( 1 ) for plating zinc-nickel coatings, having an anode ( 2 ) a cathode ( 3 ) and an alkaline electrolyte comprising amines, wherein the anode is separated from the alkaline electrolyte by an ion exchange membrane ( 6 ).

2. Electroplating cell ( 1 ) according to claim 1 , wherein the ion exchange membrane( 6 ) comprises a perfluorinated cation ion exchange membrane.

3. Electroplating cell ( 1 ) according to claims 1 or 2 , characterized by sulfuric acid, phosphoric acid, methanesulfonic acid, amidosulfonic acid and/or phosphonic acid as anolyte ( 5 ).

4. Electroplating cell ( 1 ) according to one of claims 1 or 2 , wherein the anode comprises a platinum-coated titanium anode.

Priority Claims (1)
DE 198 34 353 · Jul 30, 1998 · national
Continuity (4)
Continuation 12030750 · Feb 13, 2008
Continuation 10618352 · Jul 11, 2003
Division 09744706
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