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Time‐temperature effects in polymer coatings for corrosion protection as analyzed by EIS
Author(s) -
Bierwagen Gordon,
He Lingyun,
Tallman Dennis
Publication year - 2002
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200209)187:1<909::aid-masy909>3.0.co;2-q
Subject(s) - materials science
More information is contained in Electrochemical Impedance Spectroscopy (EIS) results at steady‐state vs. Temperature data sets than just the low frequency limit/polymer coating film resistance data most often cited. We have analyzed various EIS‐Temperature data sets for several coating films in immersion and present the results considering the coating film dielectric constant vs. frequency and temperature. Water up‐take can be analyzed by these methods and can be used to estimate the role of this process in the failure of corrosion protective coatings. For coating films that have been subjected to cyclic exposure, analysis of the dielectric constant vs. frequency data resulting from EIS data on these films indicate that cyclic exposure contributes significantly to ‘physical aging’ of the coating polymer.