DETECTING CORROSION RESISTANCE OF COATED STEEL REBARS BY ELECTROCHEMICAL TECHNIQUE (EIS)

J. Ryou and S. Shah
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J. Ryou: Department of Civil Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
S. Shah: Center for Advanced Cement-Based Materials, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA

Surface Review and Letters (SRL), 2006, vol. 13, issue 04, 345-349

Abstract: Electrochemical impedance spectroscopy (EIS) is one of the electrochemical techniques used in materials science. The present measurements are used to evaluate the corrosion resistance of new types of coated steel rebar used in reinforced concrete. In this study,Si-based coating materials are used and evaluated, because addingSito metals and alloys, including steel, generally increases their corrosion, oxidation, and erosion resistance. The result suggests that electrochemical impedance spectroscopy may be useful for monitoring corrosion activity on coated steel rebars. Based upon impedance changes, it appears that the silicon powder coating bonds well to the steel, and that the coating has a good performance.

Keywords: Electrochemical impedance spectroscopy; corrosion resistance; steel rebar; coating (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1142/S0218625X06008293

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