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Chromia layer growt...
Chromia layer growth on a Ni-based superalloy: Sub-parabolic kinetics and the role of titanium
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- Cruchley, S (författare)
- University of Birmingham, England
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- Evans, H E. (författare)
- University of Birmingham, England
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- Taylor, M P. (författare)
- University of Birmingham, England
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- Hardy, M C. (författare)
- Rolls Royce Plc, England
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- Stekovic, Svjetlana (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska högskolan
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(creator_code:org_t)
- Elsevier, 2013
- 2013
- Engelska.
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Ingår i: Corrosion Science. - : Elsevier. - 0010-938X .- 1879-0496. ; 75, s. 58-66
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Nyckelord
- Superalloys
- Oxidation
- Selective Oxidation
- TECHNOLOGY
- TEKNIKVETENSKAP
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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