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Third element effect in the surface zone of Fe-Cr-Al alloys
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2010 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 81, no 3Article in journal (Refereed) Published
Abstract [en]

The third element effect to improve the high temperature corrosion resistance of the low-Al Fe-Cr-Al alloys is suggested to involve a mechanism that boosts the recovering of the Al concentration to the required level in the Al-depleted zone beneath the oxide layer. We propose that the key factor in this mechanism is the coexistent Cr depletion that helps to maintain a sufficient Al content in the depleted zone. Several previous experiments related to our study support that conditions for such a mechanism to be functional prevail in real oxidation processes of Fe-Cr-Al alloys.

Place, publisher, year, edition, pages
2010. Vol. 81, no 3
Keyword [en]
stainless-steels, phase-separation, potential model, fecral alloys, ods, alloy, oxidation, approximation, aluminum, 1000-degrees-c, segregation
National Category
Condensed Matter Physics
URN: urn:nbn:se:kth:diva-19157DOI: 10.1103/PhysRevB.81.033105ISI: 000274002300005ScopusID: 2-s2.0-77954803099OAI: diva2:337204
Swedish Research Council
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-01-24Bibliographically approved

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Johansson, BörjeVitos, Levente
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