Universiti Teknologi Malaysia Institutional Repository

Does coating resistance control corrosion?

Sykes, John and Whyte, Edward and Xu, Yan and Sharer Sahir, Zalilah (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
Additional Information:RADIS System Ref No:PB/2016/05175
Uncontrolled Keywords:paint coatings; resistance inhibition
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:66492
Deposited By: Fazli Masari
Deposited On:03 Oct 2017 21:23
Last Modified:03 Oct 2017 21:23

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