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Oxidation After Bre...
Oxidation After Breakdown of the Chromium-Rich Scale on Stainless Steels at High Temperature: Internal Oxidation
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- Jonsson, Torbjörn, 1970 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Karlsson, Sofia, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hoseini Hooshyar, Hamed, 1986 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sattari, Mohammad, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Liske, Jesper, 1978 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Svensson, Jan-Erik, 1965 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Lars-Gunnar, 1952 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2016-01-20
- 2016
- Engelska.
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Ingår i: Oxidation of Metals. - : Springer Science and Business Media LLC. - 1573-4889 .- 0030-770X. ; 85:5-6, s. 509-536
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https://research.cha... (primary) (free)
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https://link.springe...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Breakaway oxidation of alloy 304L at 600 degrees C was studied in four environments (O-2 + H2O + KCl, O-2 + H2O + SO2 + KCl, H-2 + H2O + Ar, O-2 + K2CO3) for up to 168 h. The resulting scales were investigated by FIB/SEM, SEM/EDX, STEM/EELS, STEM/EDS and oxidation was elucidated by thermodynamic calculations (Thermo-Calc). The initial thin protective scale broke down in all cases. After breakaway, the scale consisted of two layers, i.e. an inward growing spinel/reaction zone and an outward growing iron-rich layer. The general features and microstructure of the scales after breakaway were similar in all environments and were explained in terms of: (1) Different diffusivities of Cr3+ and Fe2+ in the spinel oxide. (2) The appearance of a miscibility gap in the FeCr and FeCrNi spinel oxides. (3) The equilibrium composition of the spinel (at low pO(2) Ni is not present in the spinel).
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Breakaway corrosion
- Alkali
- 304L
- Oxidation
- Internal oxidation
- TEM
- Water vapour
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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