Universiti Teknologi Malaysia Institutional Repository

Does "coating resistance" control corrosion?

Sykes, J. M. and Whyte, E. P. and Yu, X. and Sahir, Z. Sharer (2017) Does "coating resistance" control corrosion? Progress in Organic Coatings, 102 . pp. 82-87. ISSN 0300-9440

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Official URL: http://dx.doi.org/10.1016/j.porgcoat.2016.04.015

Abstract

Bacon, Smith and Rugg first identified a link between the DC resistance of a coated panel after exposure to salt solution and the performance of the coating in an exposure test. Mayne explained this as “resistance inhibition”. This paper will consider what coating resistance measured by Electrochemical Impedance Spectroscopy (EIS) tells us about factors controlling the corrosion process. It shows that the activation energy for ion conduction does not correspond with that for the corrosion process, suggesting that the paint resistance we measure is not the controlling factor. Furthermore, tests on a model galvanic cell reveal a significant influence of both electrode polarisation and resistance inhibition.

Item Type:Article
Uncontrolled Keywords:resistance inhibition, electrochemical impedance spectroscopy, coating resistance
Subjects:T Technology > T Technology (General)
Divisions:Others
ID Code:80271
Deposited By: Narimah Nawil
Deposited On:25 Apr 2019 09:24
Last Modified:25 Apr 2019 09:24

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