Journal article
Interaction mechanisms between slurry coatings and solid oxide fuel cell interconnect alloys during high temperature oxidation
Mixed Conductors, Department of Energy Conversion and Storage, Technical University of Denmark1
Department of Energy Conversion and Storage, Technical University of Denmark2
Department of Mechanical Engineering, Technical University of Denmark3
Materials and Surface Engineering, Department of Mechanical Engineering, Technical University of Denmark4
Six different coatings consisting of fluorite-, corundum-, spinel- or perovskite-type oxides were deposited on a Fe22Cr alloy (Crofer 22APU) and oxidized at 900°C in moisturized air.Five of the coatings prevented break-away oxidation otherwise observed for the uncoated alloy, and the parabolic oxidation rate constant was reduced with 50–90% of that for uncoated alloy.
One coating consisting of MnCo2O4 did not significantly affect the oxidation rate of the alloy, and just as for uncoated samples break-away oxidation occurred for MnCo2O4 coated samples. The interaction mechanisms between the growing oxide scales and applied coatings can be classified according to three types.
| Language: | English |
|---|---|
| Year: | 2012 |
| Pages: | 16-29 |
| ISSN: | 18734669 and 09258388 |
| Types: | Journal article |
| DOI: | 10.1016/j.jallcom.2011.12.095 |
| ORCIDs: | Hendriksen, P.V. and Somers, M.A.J. |
