The electrodissolution of cobalt in gas saturated 0.1 N H2SO4 was studied with a rotating disk electrode (RDE) and microband electrodes. No mass transport effect was found. The corrosion rates obtained by voltammetry were very close to those obtained with the Quartz Crystal Microbalance (QCM). Copper electrodissolution in gas saturated 0.1 N HCl was influence by mass transport. Different current densities were obtained for a RDE at different rotating speeds or for a microdisk electrode where spherical diffusion enhanced mass transport.

Subject
Films, Materials, Corrosion rate, Microelectrodes, Dissolution, Quartz, Voltammetry, Mass transfer, Anodic reactions, Anodic dissolution, Cobalt, Copper, Electrodes
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1989
Association for Materials Protection and Performance (AMPP)
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