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High temperature oxidation of Fe-Al and Fe-Cr-Al alloys: The role of Cr as a chemically active element
Vise andre og tillknytning
2010 (engelsk)Inngår i: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 52, nr 10, s. 3394-3404Artikkel i tidsskrift (Fagfellevurdert) 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. (C) 2010 Elsevier Ltd. All rights reserved.

sted, utgiver, år, opplag, sider
2010. Vol. 52, nr 10, s. 3394-3404
Emneord [en]
Alloy, Steel, AES, Oxidation, Passive films
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-26831DOI: 10.1016/j.corsci.2010.06.019ISI: 000281315500029Scopus ID: 2-s2.0-77955514351OAI: oai:DiVA.org:kth-26831DiVA, id: diva2:375469
Merknad
QC 20101208Tilgjengelig fra: 2010-12-08 Laget: 2010-11-29 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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