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Communication - an approach to measuring local electrochemical impedance for monitoring cathodic disbondment of coatings

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journal contribution
posted on 01.01.2016, 00:00 authored by Fari Mahdavi, Mike Yongjun TanMike Yongjun Tan, Maria ForsythMaria Forsyth
An electrochemically integrated multi-electrode array has been used for monitoring and visualizing the cathodic disbondment of
defective coatings by measuring local electrochemical impedance. Compared with the conventional electrochemical impedance and
local current measurement approaches, this new approach significantly enhances the sensitivity of detecting the propagation of
coating disbondment by eliminating the effects of the dominating low impedance regions, such as those that arise at coating defects,
and thus increases the visibility of higher impedance regions deep in the disbonded coating. Furthermore, it facilitates the probing
of electrode processes and mechanisms in selected local electrode regions.

History

Journal

Journal of the electrochemical society

Volume

163

Issue

5

Pagination

C228 - C231

Publisher

Electrochemical Society

Location

Pennington, N.J.

ISSN

0013-4651

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2016, The Authors