EFFECT OF FERROUS ION CONCENTRATION ON THE ELECTRODEPOSITION OF IRON-NICKEL ALLOYS

Ni-Fe alloys were deposited galvanostatically on the disk part of the platinum rotating ring-disk electrodes (RRDEs). Contents of nickel and iron were determined using the electrochemical stripping method. It w as shown experimentally and explained theoretically that nickel deposi tion rate is inhibited as the ferrous ion concentration in the bath is increased. A mathematical model that includes the phenomenon of surfa ce competition between FeOH+ and NiOH+ ions can quantify the inhibitio n of nickel deposition rate in the presence of ferrous ion species.