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Hyperfine Interactions

, Volume 192, Issue 1–3, pp 51–59 | Cite as

Characterization of initial atmospheric corrosion of conventional weathering steels and a mild steel in a tropical atmosphere

  • Juan A. Jaén
  • Alcides Muñóz
  • Jaime Justavino
  • Cecilio Hernández
Article

Abstract

The phases and compositions of the corrosion products of a mild steel (A-36) and two weathering steels (A-588 and COR 420) formed after 3 months exposure to the tropical marine atmosphere of Panama were examined using FTIR and Mössbauer spectroscopy. The results show that amorphous or crystallized iron oxyhydroxides goethite α-FeOOH and lepidocrocite γ-FeOOH are early corrosion products. Maghemite γ-Fe2O3 and magnetite Fe3O4 have also been identified and found to be prominent components for steels exposed to the most aggressive conditions. The formation of akaganeite β-FeOOH was observed when chlorides were occluded within the rust. FTIR showed the presence of hematite α-Fe2O3 in one sample.

Keywords

Atmospheric corrosion Weathering steel Carbon steel Tropical atmosphere Corrosion product 

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Juan A. Jaén
    • 1
  • Alcides Muñóz
    • 2
  • Jaime Justavino
    • 3
  • Cecilio Hernández
    • 3
  1. 1.Depto. de Química Física, CITEN, Lab. N° 105, Edificio de Laboratorios Científicos—VIPUniversidad de PanamáPanama CityPanama
  2. 2.Depto. de Física, Lab. N° 216, Edificio de Laboratorios Científicos—VIPUniversidad de PanamáPanama CityPanama
  3. 3.Laboratorio de Química y Física AplicadaUniversidad Tecnológica de PanamáPanama CityPanama

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