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Microstructural Inv...
Microstructural Investigation of the Initial Oxidation of the FeCrAlRE Alloy Kanthal AF in Dry and Wet O-2 at 600 and 800 degrees C
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- Canovic, Sead, 1979 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Engkvist, Josefin, 1972 (author)
- Högskolan i Dalarna,Dalarna university
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- Liu, Fang, 1975 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lai, Haiping, 1979 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Götlind, Helena, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hellström, Kristina M, 1971 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Svensson, Jan-Erik, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Lars-Gunnar, 1952 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Olsson, M. (author)
- Högskolan i Dalarna,Dalarna university
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- Halvarsson, Mats, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- The Electrochemical Society, 2010
- 2010
- English.
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In: Journal of the Electrochemical Society. - : The Electrochemical Society. - 1945-7111 .- 0013-4651. ; 157:6, s. C223-C230
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The FeCrAlRE (where RE is reactive element) alloy Kanthal AF was exposed isothermally at 600 and 800 degrees C for 72 h in dry O-2 and in O-2 with 10 vol % H2O. The mass gains were 3-5 times higher at the higher temperature. The presence of water vapor increased the oxidation rate at 800 degrees C, while no significant effect was observed at 600 degrees C. A thin two-layered oxide formed at 600 degrees C: an outer (Fe, Cr)(2)O-3 corundum-type oxide, containing some Al, and an inner, probably amorphous, Al-rich oxide. At 800 degrees C a two-layered oxide formed in both environments. The inner layer consisted of inward grown alpha-Al2O3. In dry O-2 the originally formed outward grown gamma-Al2O3 had transformed to alpha-Al2O3 after 72 h. Water vapor stabilized the outward grown gamma-Al2O3 and hence no transformation occurred after 72 h in humid environment. RE-rich oxide particles with varying composition (Y, Zr, and Ti) were distributed in the base oxide at both temperatures and in both environments. The RE-rich particles were separated from the alloy substrate by a layer of Al-rich oxide. At 800 degrees C the Y-rich RE particles were surrounded by thick oxide patches in both dry and humid O-2.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Keyword
- 40-percent h2o
- 900 degrees-c
- mg-incorporation
- oxide scales
- water-vapor
- alumina scales
- cyclic oxidation
- fecraire alloys
- high-temperature oxidation
- growth
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Canovic, Sead, 1 ...
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Engkvist, Josefi ...
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Liu, Fang, 1975
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Lai, Haiping, 19 ...
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Götlind, Helena, ...
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Hellström, Krist ...
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show more...
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Svensson, Jan-Er ...
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Johansson, Lars- ...
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Olsson, M.
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Halvarsson, Mats ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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Journal of the E ...
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Chalmers University of Technology