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- Cruchley, SUniversity of Birmingham, England (author)
Chromia layer growth on a Ni-based superalloy: Sub-parabolic kinetics and the role of titanium
- Article/chapterEnglish2013
Publisher, publication year, extent ...
- Elsevier,2013
- electronicrdacarrier
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- LIBRIS-ID:oai:DiVA.org:liu-97430
- https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-97430URI
- https://doi.org/10.1016/j.corsci.2013.05.016DOI
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- Language:English
- Summary in:English
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- Funding Agencies|Engineering and Physical Sciences Research Council||Rolls-Royce plc||
- Oxidation of the Ni-based superalloy RR1000 has been undertaken in air over the temperature range 600-900 degrees C for times up to 5000 h. The surface oxide consisted of a protective Ti-doped chromia layer but with rutile forming on its outer surface. Sub-surface oxidation of Al and Ti also occurred. The thickening kinetics of the chromia layer were sub-parabolic with initial rates around two orders of magnitude higher than expected for Ti-free chromia. This enhancement and the sub-parabolic kinetics are accounted for by Ti-doping of the chromia layer. Over time the enhancement reduced because of Ti-depletion in the alloy.
Subject headings and genre
- Superalloys
- Oxidation
- Selective Oxidation
- TECHNOLOGY
- TEKNIKVETENSKAP
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- Evans, H E.University of Birmingham, England (author)
- Taylor, M P.University of Birmingham, England (author)
- Hardy, M C.Rolls Royce Plc, England (author)
- Stekovic, SvjetlanaLinköpings universitet,Konstruktionsmaterial,Tekniska högskolan(Swepub:liu)svest75 (author)
- University of Birmingham, EnglandRolls Royce Plc, England (creator_code:org_t)
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- In:Corrosion Science: Elsevier75, s. 58-660010-938X1879-0496
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