This article describes an innovative test program using electrochemical impedance spectroscopy to evaluate two high-build epoxy linings for rapid water immersion. The performance of a two-coat application of a low-temperature-cure 80% volume solids modified phenalkamine epoxy was compared with a one-coat application of a 100% volume solids polyamide epoxy. Each system was immersed in distilled and deionized water after only a 24- to 48-h curing time.
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