Corrosion behaviour of nitrided ferritic stainless steels for use in solid oxide fuel cell devices
Research output: Contribution to journal › Article › peer-review
Authors
Colleges, School and Institutes
External organisations
- École Polytechnique Fédérale de Lausanne (EPFL)
- Korean Institute of Energy Research (KIER)
- TEER COATINGS LIMITED
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- EPFL
Abstract
Plasma nitriding was applied to ferritic stainless steel substrates to improve their performances as interconnects for solid oxide fuel cell devices. The samples underwent electrical conductivity test and SEM/EDS, TEM/EDS, environmental-SEM analyses. The first stages of corrosion were recorded in-situ with the e-SEM. Nitriding is effective in limiting the undesired chromium evaporation from the steel substrates and accelerates the corrosion kinetics, but its influence of the electrical conductivity is ambiguous. No intergranular corrosion is found in the steel substrate after long time operation. Nitriding helps commercially competitive porous coating to improve chromium retention properties of metal interconnects.
Details
Original language | English |
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Article number | 108414 |
Number of pages | 10 |
Journal | Corrosion Science |
Volume | 165 |
Early online date | 10 Jan 2020 |
Publication status | Published - 1 Apr 2020 |
Keywords
- High temperature corrosion, Nitriding, Oxide coatings, Stainless steel, TEM