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11–23% Cr steels fo...
11–23% Cr steels for solid oxide fuel cell interconnect applications at 800 °C – How the coating determines oxidation kinetics
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- Reddy, Mareddy, 1993 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Chausson, T. E. (author)
- Université de Toulouse,University of Toulouse
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- Svensson, Jan-Erik, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Froitzheim, Jan, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
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In: International Journal of Hydrogen Energy. - : Elsevier BV. - 0360-3199. ; 48:34, s. 12893-12904
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Abstract
Subject headings
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- The present work investigates the low-cost steels AISI 441, AISI 430, and AISI 444 against the tailor-made high Cr steel Crofer 22 APU (22.9 wt% Cr) at 800 °C in simulated solid oxide fuel cell (SOFC) cathode conditions. Furthermore, a low Cr steel, AISI 409 (11.4 wt% Cr) is included in the study. The oxidation, chromium evaporation, and area-specific resistance (ASR) of the uncoated and Ce/Co-coated steels are studied for up to 3000 h. Ce/Co-coated steels showed significant improvement in behaviour compared to their uncoated counterparts. The oxidation and chromium evaporation behaviour between the uncoated steels varied substantially while the Ce/Co coated steels exhibited highly similar behaviour. The area-specific resistance of the coated low-cost steels was on par with Crofer 22 APU. However, 430 formed a continuous silica layer, resulting in a higher ASR after 3000 h. Cross-sections of the uncoated and Ce/Co-coated steels were analysed using a scanning electron microscope and energy dispersive X-ray spectroscopy.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (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
- Cr evaporation
- Solid oxide fuel cell
- Ce/Co coating
- Comparision
- Interconnect
- Reactive element effect
Publication and Content Type
- art (subject category)
- ref (subject category)
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