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Iron oxidation at low temperature (260–500 C) in air and the effect of water vapor

Bertrand, Nathalie and Desgranges, Clara and Poquillon, Dominique and Lafont, Marie-Christine and Monceau, Daniel Iron oxidation at low temperature (260–500 C) in air and the effect of water vapor. (2009) Oxidation of Metals, 73 (1-2). 139-162. ISSN 1573-4889

(Document in English)

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Official URL: http://dx.doi.org/10.1007/s11085-009-9171-0


The oxidation of iron has been studied at low temperatures (between 260 and 500 C) in dry air or air with 2 vol% H2O, in the framework of research on dry corrosion of nuclear waste containers during long-term interim storage. Pure iron is regarded as a model material for low-alloyed steel. Oxidation tests were performed in a thermobalance (up to 250 h) or in a laboratory furnace (up to 1000 h). The oxide scales formed were characterized using SEM-EDX, TEM, XRD, SIMS and EBSD techniques. The parabolic rate constants deduced from microbalance experiments were found to be in good agreement with the few existing values of the literature. The presence of water vapor in air was found to strongly influence the transitory stages of the kinetics. The entire structure of the oxide scale was composed of an internal duplex magnetite scale made of columnar grains and an external hematite scale made of equiaxed grains. 18O tracer experiments performed at 400 C allowed to propose a growth mechanism of the scale.

Item Type:Article
Additional Information:Thanks to Springer Netherlands editor. The definitive version is available at http://www.springerlink.com/ The original PDF of the article can be found at Oxidation of Metals website : http://www.springerlink.com/content/35v3w4254202n104/
HAL Id:hal-03565652
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:25 Jan 2011 13:16

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