The effect of hydrogen on the breakdown of the protective oxide scale in solid oxide fuel cell interconnects
Journal article, 2021
In this study, the effect of hydrogen, on the degradation of AISI 441 interconnect, under solid oxide fuel cell operating conditions was investigated between 500−800 °C for 336 h. As a new hypothesis, it is concluded that, hydrogen impedes Cr diffusion, probably in the grain boundaries, leading to the breakdown of the protective oxide scale. This effect is most severe at 600 °C, while at lower or higher temperatures the effect is attenuated. Cr diffusion is enhanced at high temperatures, whereas protective scales can be obtained at low temperatures with a lower amount of Cr.
Solid oxide fuel cell
Interconnect
Hydrogen
Corrosion
AISI 441
Dual
Atmosphere
Author
Kerem Gündüz
Gebze Institute of Technology (GYTE)
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Anton Chyrkin
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Claudia Goebel
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Lukas Hansen
Student at Chalmers
Oscar Hjorth
Student at Chalmers
Jan-Erik Svensson
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Jan Froitzheim
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Corrosion Science
0010-938X (ISSN)
Vol. 179 109112Subject Categories
Ceramics
Chemical Process Engineering
Other Chemical Engineering
DOI
10.1016/j.corsci.2020.109112