Article ID Journal Published Year Pages File Type
7895540 Corrosion Science 2015 8 Pages PDF
Abstract
Carbon steel coupons were set in the tidal zone of a French seaport for 7 years with or without cathodic protection. The average corrosion rates decreased from 90 μm yr−1 to 9 μm yr−1 under cathodic protection. The corrosion product layers covering the unprotected coupons, characterized by Raman spectroscopy and X-ray diffraction, were mainly made up of magnetite and Fe(III) oxyhydroxides, with magnetite being clearly predominant. The products of the residual corrosion process under cathodic protection, similar to those observed at open circuit potential, formed a thin layer on the steel surface under the calcareous deposit.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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