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High temperature co...
High temperature corrosion behavior of FeCrAlSi model alloys in the presence of water vapor and KCl at 600 °C – The influence of Cr content
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- Eklund, Johan, 1991 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hanif, Imran, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bigdeli, Sedigheh, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jonsson, Torbjörn, 1970 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- English.
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In: Corrosion Science. - : Elsevier BV. - 0010-938X. ; 198
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Abstract
Subject headings
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- The corrosion behavior of Fe(5−20)Cr3Al2Si model alloys and the underlying mechanisms after breakaway oxidation was investigated at 600 °C. Rapid breakaway oxidation was triggered for all alloys in the presence of KCl(s). Thermogravimetric analysis showed that alloys with a Cr content of ≥ 10 wt% transitioned into sub-parabolic oxidation kinetics at an early stage of the oxidation process after breakaway oxidation. Through advanced electron/ion microscopy, this behavior was attributed to high Cr-enrichment in the bottom part of the inward-growing scale, indicating the formation of a healing layer. Additionally, alloys with elevated Cr-content (≥15 wt%) were more prone to grain boundary attack.
Subject headings
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (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)
Keyword
- C. Internal oxidation
- A. Silicon
- C. High temperature corrosion
- A. Chromium
- B. STEM
- A. FeCrAl
Publication and Content Type
- art (subject category)
- ref (subject category)
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