Journal of Applied Electrochemistry

, Volume 22, Issue 6, pp 506–511 | Cite as

Voltammetric study of plating baths for electrodeposition of Co-W amorphous alloys

  • K. Wikiel
  • J. Osteryoung


Cyclic voltammetry and chronoamperometry at glassy carbon and platinum microdisc electrodes have been used to study the electrodeposition of Co−W amorphous alloys. Voltammetric results show that cathodic deposition of Co−W alloy is accompanied by hydrogen evolution and the efficiency of Co−W electrodeposition does not exceed 20%. Voltammetric behaviour of cobalt (II) and tungstate in ammonium citrate solution depend strongly on composition of the plating bath. The concentration of Co(II) ions can be monitoredin situ during electroplating by means of anodic stripping voltammetry at a platinum microelectrode. The deposit of the alloy on the microelectrode is stable in the atmosphere and thus can be stored for subsequent comparison with a deposit obtained later in the life of the working bath.


Hydrogen Atmosphere Ammonium Platinum Cobalt 
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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • K. Wikiel
    • 1
  • J. Osteryoung
    • 1
  1. 1.Department of ChemistryState University of New York at BuffaloBuffaloUSA

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