Corrosion Beneath Polymeric Coatings on Thin Metal Films as Studied Using Concurrent AC Impedance and Parallel DC Resistance Measurements
- 1 January 1986
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 133 (1) , 43-48
- https://doi.org/10.1149/1.2108538
Abstract
A comparison is made between two electrical techniques for studying the deterioration of polymer‐coated metals. AC impedance measurements and parallel dc resistance measurements are concurrently made on the same sample exposed to a variety of aggressive environments. Thin metal films supported on glass and coated with polybutadiene are investigated. Together, these two techniques provide complementary information on the state of a painted metal as a function of time. AC measurements integrate effects over the coating/metal interface, whereas the parallel dc measurements yield information about the electron conduction of the metallic substrate only.Keywords
This publication has 0 references indexed in Scilit: