EIS techniques for coating evaluation

Corrosion and coatings are not the only source of time constants. Other examples of phenomena which produce these characteristics include: induction (e.g. hydrogen ions adsorbing on a metal surface): diffusion (e.g. electron exchange between a metal and an electrochemically active species is so rapi...

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Bibliographic Details
Published in:Transactions of the Institute of Metal Finishing 2002-07, Vol.80 (4), p.B59-B61
Main Author: Dawson, M
Format: Article
Language:English
Online Access:Get full text
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Summary:Corrosion and coatings are not the only source of time constants. Other examples of phenomena which produce these characteristics include: induction (e.g. hydrogen ions adsorbing on a metal surface): diffusion (e.g. electron exchange between a metal and an electrochemically active species is so rapid that the corrosion rate is controlled by the species diffusion to the metal surface); and parasitic pathways (the solution resistance is so large that the applied ac voltage finds a less resistive pathway through the electronic instrumentation).
ISSN:0020-2967