Abstract
The influence of and bulk concentrations on the electrodeposition of NiCoFe ternary alloys is examined under conditions where the bulk concentration of is in comparable excess. Experiments are carried out with recessed rotating cylinder cathodes at a single rotation rate. The Fe rate during alloy deposition appears independent of and bulk concentrations but is enhanced compared to its single metal rate. Both catalytic and inhibiting effects are observed for Co deposition. The Co rate increases with the bulk concentration but is inhibited with the bulk concentration. The Ni rate is also inhibited with an increase of the bulk concentration but appears unaffected by changes in the bulk concentration. A mixed metal catalytic mechanism is shown to describe the experimental anomalous behavior. © 2003 The Electrochemical Society. All rights reserved.
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