How to interpret “EIS” spectra?
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Electrochemical Impedance Spectroscopy (EIS) can be a useful tool for differentiating today’s high-performance coating systems. These advanced coatings with their improved barrier properties perform longer in-service environments that are notoriously challenging. The use of accelerated weathering/corrosion testing in the laboratory to differentiate coating performance is still viable, but can take a year or longer, versus 3-4 months that were used just a decade or so ago, which creates longer lead times to market and increased testing costs.
