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Grain boundary oxidation in iron-based alloys, investigated by 18O enriched water vapour : the effect of mixed oxides in binary and ternary Fe-{Al, Cr, Mn, Si} systems
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Auinger, Michael, Praig, Vera G., Linder, Bernhard and Danninger, H. (Herbert) (2015) Grain boundary oxidation in iron-based alloys, investigated by 18O enriched water vapour : the effect of mixed oxides in binary and ternary Fe-{Al, Cr, Mn, Si} systems. Corrosion Science, 96 . pp. 133-143. doi:10.1016/j.corsci.2015.04.009
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Official URL: http://dx.doi.org/10.1016/j.corsci.2015.04.009
Abstract
Selective oxidation experiments at 700C in binary and ternary iron-based model alloys containing Al, Cr, Mn, and Si were carried out. The internal oxidation behaviour along grain boundaries and inside ferrite grains was analyzed by LOM, SEM and ToF-SIMS. Oxygen isotope exchange revealed the location of fast diffusion pathways in the alloy. Numerical calculations of oxide distributions were compared to experimental findings, revealing that oxygen transport within ferrite grains is significantly lower than reported from literature. Discrepancies between simulations and experiments were discussed. The presented hypothesis of oxygen trapping represents an important viewpoint to explain internal oxidation in metallic alloys.
| Item Type: | Journal Article | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry | ||||||||||
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||
| Library of Congress Subject Headings (LCSH): | Steel -- Corrosion, Steel -- Oxidation | ||||||||||
| Journal or Publication Title: | Corrosion Science | ||||||||||
| Publisher: | Pergamon | ||||||||||
| ISSN: | 0010-938X | ||||||||||
| Official Date: | July 2015 | ||||||||||
| Dates: |
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| Date of first compliant deposit: | 29 December 2015 | ||||||||||
| Volume: | 96 | ||||||||||
| Page Range: | pp. 133-143 | ||||||||||
| DOI: | 10.1016/j.corsci.2015.04.009 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| Funder: | Christian Doppler Forschungsgesellschaft, VÖEST-Alpine (Firm) |
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