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Application of Electrochemical Impedance Spectroscopy to evaluate cathodically protected coated steel in seawater
Abstract
Two types of organic coated carbon steel (S235JR2 grade) electrodes were exposed to artificial seawater environment. One prepared type was defect free while the other one had an intentionally introduced φ0,5 cm coating defect. Both kinds of samples were polarized during the exposure to four potentials corresponding to four different cathodic protection levels. Evolution of their EIS spectra is presented in this paper. Results obtained in the experiment indicate that protective organic coating condition could be estimated and monitored in time based on EIS investigations. If a sample is defected EIS allows a recognition of overprotected and unprotected sample. Distinguishing a fully protected sample from partially protected sample based on EIS was troublesome.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
CONSTRUCTION AND BUILDING MATERIALS
no. 181,
pages 721 - 726,
ISSN: 0950-0618 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Narożny M., Żakowski K., Darowicki K.: Application of Electrochemical Impedance Spectroscopy to evaluate cathodically protected coated steel in seawater// CONSTRUCTION AND BUILDING MATERIALS. -Vol. 181, (2018), s.721-726
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.conbuildmat.2018.06.033
- Sources of funding:
-
- grant NCBiR nr 2012/05/N/ST8/02899
- Verified by:
- Gdańsk University of Technology
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