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Stability of Extern...
Stability of External alpha-Al2O3 Scales on Alloy 602 CA at 1100-1200 A degrees C
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- Chyrkin, Anton, 1984 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Swadzba, R. (författare)
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- Pillai, R. (författare)
- Forschungszentrum Jülich GmbH
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- Galiullin, T. (författare)
- Forschungszentrum Jülich GmbH
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- Wessel, E. (författare)
- Forschungszentrum Jülich GmbH
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- Gruener, D. (författare)
- Forschungszentrum Jülich GmbH
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- Quadakkers, W. J. (författare)
- Forschungszentrum Jülich GmbH
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(creator_code:org_t)
- 2017-12-16
- 2018
- Engelska.
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Ingår i: Oxidation of Metals. - : Springer Science and Business Media LLC. - 1573-4889 .- 0030-770X. ; 90:1-2, s. 119-133
- Relaterad länk:
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- An external ultrathin alpha-Al2O3 scale grown on the Ni-base alloy 602 CA during air oxidation at 800 A degrees C was characterized by means of high-resolution TEM/EDX and electron diffraction. Alloy samples pre-oxidized at 800 A degrees C were subsequently exposed at 1100, 1150 and 1200 A degrees C for up to 100 h. Whereas the external alumina remained stable at 1100 A degrees C, with the increasing exposure temperature, the pre-grown alumina scale tended to break down resulting in an external chromia scale accompanied by internal alumina precipitation. The transition from external to internal Al oxidation was investigated using SEM/EDX/EBSD. The critical Al depletion at the scale-alloy interface during the post-exposure at 1100-1200 A degrees C was modeled using the CALPHAD-based thermodynamic-kinetic approach.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Keramteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Ceramics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Korrosionsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Corrosion Engineering (hsv//eng)
Nyckelord
- Alumina scales
- Alloy 602 CA
- Pre-oxidation
- Breakaway
- Depletion
- Internal oxidation
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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