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Journal Article

Corrosion behaviour of nitrided ferritic stainless steels for use in solid oxide fuel cell devices

MPS-Authors
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Wang,  Zhu-Jun
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Willinger,  Marc Georg
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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1-s2.0-S0010938X19321869-main.pdf
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Citation

Bianco, M., Poitel, S., Hong, J.-E., Yang, S., Wang, Z.-J., Willinger, M. G., et al. (2020). Corrosion behaviour of nitrided ferritic stainless steels for use in solid oxide fuel cell devices. Corrosion Science, 165: 108414. doi:10.1016/j.corsci.2019.108414.


Cite as: http://hdl.handle.net/21.11116/0000-0005-8ED0-0
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.