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Enhanced mass transfer at the rotating cylinder electrode. I. Characterization of a smooth cylinder and roughness development in solutions of constant concentration |
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| Authors: | D. R. Gabe F. C. Walsh |
| Affiliation: | (1) Department of Materials Engineering and Design, University of Technology, LE11 3TU Loughborough, Leicestershire, UK;(2) Present address: Wolfson Centre for Electrochemical Science, Department of Chemistry, University of Southampton, SO9 5NH Southampton, UK |
| Abstract: | A versatile rotating cylinder electrode (RCE) assembly has been constructed in order to study the development of surface roughness during the prolonged cathodic deposition of metal at high overpotential. The initial smooth cylindrical surface and its behaviour have been characterized and the onset of rough deposits is described by an empirical power law (based on the mass transfer correlation)I L= (constant)U x where x～-0.74 for a smooth surface and x～-0.90 for a roughened surface. The uses and limitations of this power law are discussed. |
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