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A mathematical model of galvanostatic pulse and pulsed reverse electroplating of gold on a rotating disk electrode is presented. Using experimental polarization curves, dc current efficiencies, and literature-reported diffusion coefficients, model parameters are estimated. An accurate prediction of current efficiency by the on–off pulse-plating model was confirmed by experimental measurement. The...
The impact of pulsed reverse current on cobalt hard gold electrodeposition from a cyanide bath is presented. The reversed current results in a significant change in the morphology of electrodeposits, improvement of the overall current efficiency, and reduction of deposit porosity. With longer pulses, hemispherical surface features are generated, while larger grains result from shorter pulse widths...
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