The phase composition of Zn-Ni alloys electrodeposited from acetate-chloride plating solutions containing Zn ?2 and Ni ?2 ions at ratio of 1-12.8 at 50°C was investigated by the potentiodynamic stripping method. Two anodic current density (i a ) peaks emerged in potentiodynamic stripping curves (PDC) at E \ 0.0 V and E [ 0.0 V (vs. Ag/AgCl/KCl sat ), that were attributed to oxidation of certain phases of the Zn-Ni alloy. The ratio of these phases in deposited Zn-Ni alloys under potentiodynamic conditions was affected by the potential sweep rate (m) and maximum cathodic current density (i c ) The ratio of Zn and Ni in certain phases of Zn-Ni alloy was determined by the partial potentiodynamic stripping technique. Experimental data show that Zn-Ni alloy, containing 6.5 at.% Zn and 93.5 at.% Ni and dissolved in i a peak H (E [ 0.0 V), provides the black coloration of the Zn-Ni alloy.
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