Zn-Co coatings
Electrodeposition of zinc alloys
Article REF: M1602 V1
Zn-Co coatings
Electrodeposition of zinc alloys

Authors : Martine DEPETRIS-WERY, Hassine Ferid AYEDI

Publication date: March 10, 2009 | Lire en français

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5. Zn-Co coatings

5.1 Elaboration

These coatings, containing less than 1% cobalt, are produced using low-ammonium or ammonium-free chlorinated acid electrolytes ( [33][34][35] ). This formulation is similar to that of a "pure" chloride zinc electrolyte, to which a small quantity of cobalt ions (sulfate or chloride) and various additives have been added, including a cobalt complexing agent (table 7 ). The cobalt content of the codeposit increases...

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