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A Mössbauer and Electrochemical Characterization of the Corrosion Products Formed from Marine and Marine-Antartic Environments

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Abstract

Corrosion products formed on low alloy steel under two marine environments are characterised. Both environments are classified as C4 according to the ISO 9223 Standard. The corrosion products are identified and their relative proportion is determined by Mössbauer spectroscopy (transmission geometry). Free potentials of corrosion are measured to evaluate the activity of their surfaces. Structural characterisation by XRD were performed on selected samples. It is concluded that the principal phases are goethite, lepidocrocite, ferrihidrite and maghemite. The relative amount of each of them changes with time and with the atmospheric dynamics of each environment.

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Authors and Affiliations

  1. Facultad de Ingeniería, Instituto de Ingeniería Química, UDELAR J. Herrera y Reissig 565, C.P. 11200, Montevideo, Uruguay

    M. Ohanian, R. Caraballo, E. A. Dalchiele & E. Quagliata

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  1. M. Ohanian
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  2. R. Caraballo
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  3. E. A. Dalchiele
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  4. E. Quagliata
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Ohanian, M., Caraballo, R., Dalchiele, E.A. et al. A Mössbauer and Electrochemical Characterization of the Corrosion Products Formed from Marine and Marine-Antartic Environments. Hyperfine Interactions 148, 193–198 (2003). https://doi.org/10.1023/B:HYPE.0000003780.80572.cc

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  • DOI: https://doi.org/10.1023/B:HYPE.0000003780.80572.cc

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