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Kinetics and structural studies of the atmospheric corrosion of carbon steels in Panama

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Abstract

The corrosion of a carbon steel was studied in different atmospheres at sites in the Republic of Panama. The weight loss (corrosion penetration) suffered by the carbon steel is related to time by a bilogarithmic law. Mössbauer spectroscopy indicated the rust was composed of non-stoichiometric magnetite (Fe3-xO4), maghemite (γ-Fe2O3), goethite (α-FeOOH) of intermediate particle size, lepidocrocite (γ-FeOOH) and superparamagnetic particles. Magnetite formation is related to the alternating dry--wet cycles. Goethite is related to corrosion penetration by a saturation type of behavior, following a Langmuir type of relationship. Goethite in rust protects steel against further atmospheric corrosion.

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Authors and Affiliations

  1. Centro de Investigaciones con Técnicas Nucleares, Universidad de Panamá, Panama

    Juan A. Jaén & Lilibeth de Araque

  2. Laboratorio de Metalurgia, Universidad Tecnológica de Panamá, Panama

    Mariela Sánchez de Villalaz

  3. Departamento de Química, Universidad de Panamá, Panama

    Agnes de Bósquez

Authors
  1. Juan A. Jaén
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  2. Mariela Sánchez de Villalaz
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  3. Lilibeth de Araque
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  4. Agnes de Bósquez
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Jaén, J.A., de Villalaz, M.S., de Araque, L. et al. Kinetics and structural studies of the atmospheric corrosion of carbon steels in Panama. Hyperfine Interactions 110, 93–99 (1997). https://doi.org/10.1023/A:1012606928682

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  • DOI: https://doi.org/10.1023/A:1012606928682

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