Evaluation of nickel-cobalt deposition through the electrochemical impedance spectroscopy under magnetic field
Document Type
Article
Publication Date
1-1-2011
Abstract
Based on a dilute Watts bath, a nickel-cobalt electrolyte was formulated and its performance studied using Electrochemical Impedance Spectroscopy. The impedance spectrum is shown for electrodeposition at-0.9V and-I.IV in the presence of a permanent magnet field applied parallel to the cathode surface at a strength of 9T and in its absence. In the presence of such a magnetic field, a deposit with more uniform morphology was formed. Changes in deposit properties become less significant in the presence of AC, but even here, an effect is observed. Deposit properties were studied using SEM and AFM.
Keywords
AFM, Cathode surface, Impedance spectrum, Watts baths, Cobalt, Deposits, Electrochemical corrosion, Magnetic fields, Electrochemical impedance spectroscopy
Divisions
CHEMISTRY
Publication Title
Galvanotechnik
Volume
102
Issue
6
Publisher
E G Leuze Verlag
Additional Information
Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA