Degradation behaviour of Al-Fe coatings in wet-seal area of molten carbonate fuel cells
SCIE
SCOPUS
- Title
- Degradation behaviour of Al-Fe coatings in wet-seal area of molten carbonate fuel cells
- Authors
- Jun, J; Jun, J; Kim, K
- Date Issued
- 2002-10-24
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- The corrosion resistance of Al-Fe coatings increases as a protective LiAlO2 layer forms. If, however, the Al-Fe coatings lack sufficient aluminium for maintaining this protective layer, the corrosion resistance of the coating is degraded by the growth of non-protective scales, such as LiFeO2. In this study, the degradation behaviour of Al-Fe coatings is investigated in the wet-seal environment of molten carbonate fuel cells (MCFC). Al-Fe coated specimens with various amounts of aluminium in the range 8-70 at.% and bulk specimens of Fe-23.9 Al (at.%) are prepared. A corrosion test is performed in Li/K carbonate systems at 650 degreesC with a single-cell and an immersion test. Test results reveal that aluminium contents in the coatings should be higher than 25 at.% in order to form and maintain a protective LiAlO2 layer. In addition to aluminium content, the influence of microstructural features on the degradation behaviour of Al-Fe coatings is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
- Keywords
- molten carbonate fuel cell; Al-Fe coating; separator plate; wet-seal corrosion; CORROSION BEHAVIOR; SEPARATOR PLATES; STAINLESS-STEEL; ALUMINUM-ALLOYS; IRON; ENVIRONMENT; NI
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18844
- DOI
- 10.1016/S0378-7753(02)00353-1
- ISSN
- 0378-7753
- Article Type
- Article
- Citation
- JOURNAL OF POWER SOURCES, vol. 112, no. 1, page. 153 - 161, 2002-10-24
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- There are no files associated with this item.
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