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Oxidation of iron at 600 degrees C - experiments and simulations
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0001-8797-4585
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2016 (English)In: Materials and corrosion - Werkstoffe und Korrosion, ISSN 0947-5117, E-ISSN 1521-4176Article in journal (Refereed) Published
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Abstract [en]

Pure iron has been oxidized at 600°C and 1bar in dry O2 (oxygen partial pressure 0.05, bal. N2) and the mass gain as well as the thicknesses of the individual oxide phases have been measured. The oxidation process has been simulated using a modified version of the homogenization model as implemented in Dictra; this has helped to rationalize the kinetics of oxide scale formation and in particular the evolution of the hematite (Fe2O3), magnetite (Fe3O4), and wustite (FeO) which form. Independently assessed thermodynamic and kinetic Calphad databases are needed for the calculations; details of these are given. Reasonable agreement between simulation results and experimental data is obtained, though it is concluded that the large influence of grain boundary diffusion on the oxidation rate needs further consideration.

Place, publisher, year, edition, pages
Wiley-Blackwell, 2016.
Keyword [en]
Calphad, Iron, Modeling, Oxidation, Simulation, Grain boundaries, Models, Scale (deposits), Grain-boundary diffusion, Oxidation process, Oxidation rates, Oxide phasis, Oxide scale formations, Oxygen partial pressure
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-186758DOI: 10.1002/maco.201508781ISI: 000394663600003Scopus ID: 2-s2.0-84964355248OAI: oai:DiVA.org:kth-186758DiVA: diva2:931639
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QC 20160530

Available from: 2016-05-30 Created: 2016-05-13 Last updated: 2017-04-07Bibliographically approved

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Larsson, HenrikÅgren, John
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CiteExportLink to record
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