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Influence of alloying elements in rust formed on low alloyed steels. A study by x-ray diffraction and Mössbauer spectroscopy

  • Surface Phenomena, Catalysis and Corrosion
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Abstract

In this research, three Bulgarian steels were employed, one carbon (08KP) and other two low alloyed (KBC) and (KORAT). These three steels were exposed on a test site affected with industrial pollution in the Cuban climate, for a period of one, two and three years.

The phase composition obtained by means of XRD and Mössbauer spectroscopy is mainly a mixture of Goethite (α-FeOOH) and Lepidocrocite (γ-FEOOH) in the three steels. The mean width of the Goethite reflexions, as determined in the diffractograms, is increased in the case of the low alloyed steels, while in Mössbauer spectra two types of magnetic arrangement for Goethite appear, one antiferromagnetic (sextet) and the other superparamagnetic (doublet).

This behaviour is due to the effect of the small particle size and the presence of alloying elements in the structure.

In this paper, the values of the areas of both effects are discussed from the greater formation of superparamagnetic Goethite in the KORAT steel which exibits the lowest corrosion rate.

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Authors and Affiliations

  1. Corrosion Division, National Center for Scientific Research, Havana City, Cuba

    C. Haces, N. R. Furet & L. Muleshkova

Authors
  1. C. Haces
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  2. N. R. Furet
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  3. L. Muleshkova
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Haces, C., Furet, N.R. & Muleshkova, L. Influence of alloying elements in rust formed on low alloyed steels. A study by x-ray diffraction and Mössbauer spectroscopy. Hyperfine Interact 67, 587–593 (1991). https://doi.org/10.1007/BF02398205

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  • DOI: https://doi.org/10.1007/BF02398205

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