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Characterisation of rust surfaces formed on mild steel exposed to marine atmospheres using XRD and SEM/Micro-Raman techniques

AuthorsFuente, Daniel de la; Alcántara, J.; Chico, Belén; Díaz, Iván; Jiménez, José Antonio; Morcillo, Manuel
Raman spectroscopy
Atmospheric corrosion
Mild steel
Issue Date2016
CitationCorrosion Science 110: 253-264 (2016)
AbstractThe exposure of mild steel to marine atmospheres gives rise to the formation of various corrosion products, mainly lepidocrocite, goethite, magnetite and akaganeite. In this study, Grazing Incidence X-Ray Diffraction, Micro-X-Ray Diffraction and Scanning Electron Microscopy/Micro-Raman are used to characterise rust layer surfaces and to identify the principal component rust phases and their morphology. The main conclusion reached is that lepidocrocite is preferentially located on the outermost surface while magnetite and akaganeite form mostly close to base steel. The Scanning Electron Microscopy/Micro-Raman technique has been very useful for characterising (identifying) the wide variety of morphologies presented by the rust phases.
Publisher version (URL)http://dx.doi.org/10.1016/j.corsci.2016.04.034
Identifiersdoi: 10.1016/j.corsci.2016.04.034
issn: 0010-938X
Appears in Collections:(CENIM) Artículos
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