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Influence of Gd deposition on the oxidation behavior and electrical properties of a layered system consisting of Crofer 22 APU and MnCo2O4 spinel
Abstract
In the study, the surface of the Crofer 22APU ferritic steel was modified with gadolinium oxide nanoparticles and a protective-conducting layer consisting of the MnCo2O4 spinel. This system was studied in the context of application in IT-SOFC interconnects. Four types of samples were studied: unmodified steel, steel coated with a manganese-cobalt spinel layer, steel modified with gadolinium oxide nanoparticles, and a system consisting of steel after both modifications. Steel samples with Gd2O3 nanoparticles were obtained via dip-coating, while the spinel coatings were deposited electrophoretically. All samples were oxidized for 1000 and 2260 h in air at 1073 K. Microstructural and oxidation kinetics studies revealed that gadolinium segregation at grain boundaries in the Cr2O3 scale between the steel and the spinel layer reduces the oxidation rate for the steel/coating system, thereby improving the adhesion of the scale to the substrate. The applied modification decreased the chromium evaporation rate and improved the electrical properties of the interconnect material.
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Authors (7)
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Tomasz Brylewski
- AGH University of Science and Technology
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M. Marczyński
- AGH University of Science and Technology
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Ł. Mazur
- AGH University of Science and Technology
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K. Domaradzki
- AGH University of Science and Technology
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O. Kryshtal
- AGH University of Science and Technology
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A. Gil
- AGH University of Science and Technology
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
no. 46,
pages 6775 - 6791,
ISSN: 0360-3199 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Brylewski T., Molin S., Marczyński M., Mazur Ł., Domaradzki K., Kryshtal O., Gil A.: Influence of Gd deposition on the oxidation behavior and electrical properties of a layered system consisting of Crofer 22 APU and MnCo2O4 spinel// INTERNATIONAL JOURNAL OF HYDROGEN ENERGY -Vol. 46,iss. 9 (2021), s.6775-6791
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ijhydene.2020.11.169
- Verified by:
- Gdańsk University of Technology
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