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High temperature oxidation of Fe-Al and Fe-Cr-Al alloys: The role of Cr as a chemically active element
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2010 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 52, no 10, 3394-3404 p.Article in journal (Refereed) Published
Abstract [en]

Good high-temperature corrosion resistance of Fe-Al alloys in oxidizing environments is due to the alpha-Al2O3 film which is formed on the surface provided temperature is above 900 degrees C and the Al-content of the alloy exceeds the critical value. Ab initio calculations combined with experiments on Fe-13Al, Fe-18Al, Fe-23Al and Fe-10Cr-10Al alloys show that the beneficial effect of Cr on the oxidation resistance is significantly related to bulk effects. The comparison of experimental and calculated results indicates a clear correlation between the Fe-Cr chemical potential difference and the formation of the protective oxide scales.

Place, publisher, year, edition, pages
2010. Vol. 52, no 10, 3394-3404 p.
Keyword [en]
Alloy, Steel, AES, Oxidation, Passive films
National Category
Engineering and Technology
URN: urn:nbn:se:uu:diva-135187DOI: 10.1016/j.corsci.2010.06.019ISI: 000281315500029OAI: oai:DiVA.org:uu-135187DiVA: diva2:374676
Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2012-03-30Bibliographically approved

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Johansson, BörjeVitos, Levente
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