In situ evaluation of corrosion damage using non-destructive electrochemical measurements-A case study
Field application of electrochemical measurements with a non-invasive electrode arrangement has been used for investigating corrosion damage and protectiveness of a paint coating on an artwork sculpture. For this field application solid state probes were designed and used in electrochemical impedance spectroscopy (EIS) and electrochemical noise measurement (ENM) to evaluate the level of corrosion protection afforded by the paint coating. Samples were also analyzed in laboratory using analytical techniques. Results of electrochemical measurements indicated poor protective properties of the paint coating while analytical examinations revealed an inhomogeneous structure of the coating and a highly porous structure of the oxide scale.
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