Corrosion behaviour of nitrided ferritic stainless steels for use in solid oxide fuel cell devices
Research output: Contribution to journal › Article › peer-review
Colleges, School and Institutes
- Ecole Polytechnique Federale de Lausanne
- Korean Institute of Energy Research (KIER)
- Teer Coatings Ltd.
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
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.
|Number of pages||10|
|Early online date||10 Jan 2020|
|Publication status||Published - 1 Apr 2020|