Thermal cycling of epoxy coatings using room temperature ionic liquids

B. R. Hinderliter, K. N. Allahar, G. P. Bierwagen, D. E. Tallman, S. G. Croll

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Nonaqueous room-temperature ionic liquids (RTILs) offer a method of using electrochemical impedance spectroscopy (EIS) to analyze coatings without the confounding effects, such as plasticization, associated with an aqueous working fluid. Thermal cycling has been used as an accelerated testing method for ranking the corrosion protection of coatings. The influence of thermal cycling on the degradation of a coating was investigated using a hydrophilic RTIL as the electrolyte for the drying cycle of EIS experiments. The change in diffusion coefficient, saturated water volume fraction, and activation energy for the absorption and desorption of water by the coating was obtained.

Original languageEnglish (US)
Pages (from-to)C93-C100
JournalJournal of the Electrochemical Society
Volume155
Issue number3
DOIs
StatePublished - Jan 29 2008

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