Study of The Corrosion Products Formed on Carbon Steels in The Tropical Atmosphere of Panama

 

Authors

Jaén, Juan A.; De Villalaz, M. S.; Araque, L.; Hernández, Cecilio; De Bósquez, A.

Format

Article

Status

publishedVersion

Description

Mössbauer spectroscopy and X-ray powder diffraction (in selected samples) have been used to characterize corrosion products on carbon steels after atmospheric exposure to the tropical Panamanian locations of Panama and Colon, classified according to ISO 9223 as C3 and C5, respectively. Goethite (α-FeOOH) of intermediate particle size (20-100 nm), lepidocrocite (γ-FeOOH), a spinel phase consisting of non-stoichiometric magnetite (Fe3- XO4) and/or maghemite (γ-Fe2O3) and nano- sized particles were identified in the corrosion products. The spinel phase is related to short term atmospheric exposure transforms in time to other corrosion products. The corrosion resistance increased with fraction of goethite following a saturation-type behavior.
Mössbauer spectroscopy and X-ray powder diffraction (in selected samples) have been used to characterize corrosion products on carbon steels after atmospheric exposure to the tropical Panamanian locations of Panama and Colon, classified according to ISO 9223 as C3 and C5, respectively. Goethite (α-FeOOH) of intermediate particle size (20-100 nm), lepidocrocite (γ-FeOOH), a spinel phase consisting of non-stoichiometric magnetite (Fe3- XO4) and/or maghemite (γ-Fe2O3) and nano- sized particles were identified in the corrosion products. The spinel phase is related to short term atmospheric exposure transforms in time to other corrosion products. The corrosion resistance increased with fraction of goethite following a saturation-type behavior.

Publication Year

2003

Language

eng

Topic

Mössbauer spectroscopy
Tropical atmosphere
atmospheric corrosion mild steel
rust
corrosion
Mössbauer spectroscopy
Tropical atmosphere
atmospheric corrosion mild steel
rust
corrosion

Repository

RI de Documento Digitales de Acceso Abierto de la UTP

Get full text

http://ridda2.utp.ac.pa/handle/123456789/2542

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openAccess

License

https://creativecommons.org/licenses/by-nc-sa/4.0/