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@ARTICLE{Bram:15819,
author = {Bram, M. and Niewolak, L. and Shah, N. and Sebold, D. and
Buchkremer, H.P.},
title = {{I}nteraction of sealing material mica with interconnect
steel for solid oxide fuel cells application at 600 degrees
{C}},
journal = {Journal of power sources},
volume = {196},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {PreJuSER-15819},
pages = {5889 -5896},
year = {2011},
note = {The authors are grateful for financial support from the
European Commission under contract No. SES6-2006-020089
(SOFC600). They also would like to thank B. Hausmann for
manufacturing composite samples, V. Haanappel for conducting
the experiments in the dual environment, M. Kappertz for
helping in metallographic preparation, H. Moitroux for
taking macro pictures and E. Wessel for SEM/EDX
investigations. We would also like to thank W.J. Quadakkers
for helpful discussions.},
abstract = {In the last few years, a lot of effort has been undertaken
to reduce the operation temperature of solid oxide fuel
cells (SOFCs). Intermediate temperatures in the range of
600-650 degrees C are thought to be highly attractive due to
the expected reduction of high-temperature corrosion and
interdiffusion phenomena. Furthermore, each stack operated
at higher temperatures has to pass this temperature range
during thermal cycling. In this work, a study has been
carried out to investigate the interaction between
interconnect steel (DIN 1.4760) and vermiculite mica paper
filled with talc at 600 degrees C. Mica paper has been
implemented recently as a new sealing material for SOFC
stacks, aiming to replace established but brittle glass
ceramics. Corrosion experiments were conducted at 600
degrees C under dual gas atmosphere conditions as well as in
air. The interconnect steel showed the formation of
non-protective oxide scales in contact with mica, especially
in the presence of air. The morphology of oxide scales was
investigated by SEM/EDX. Possible reasons for this
unexpected result are discussed. The complete encapsulation
of mica by embossed and welded sheets made of FeCrAlY-steel
(DIN 1.4767) as well as the pre-oxidation of interconnect
steel were investigated as solutions to this problem.
Pre-oxidation was found to be a promising measure to protect
the interconnect steel from breakaway oxidation in contact
with mica. (C) 2011 Elsevier B.V. All rights reserved.},
keywords = {J (WoSType)},
cin = {IEK-1 / IEK-2},
ddc = {620},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013},
pnm = {Rationelle Energieumwandlung / SOFC - Solid Oxide Fuel Cell
(SOFC-20140602)},
pid = {G:(DE-Juel1)FUEK402 / G:(DE-Juel1)SOFC-20140602},
shelfmark = {Electrochemistry / Energy $\&$ Fuels},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000290837000017},
doi = {10.1016/j.jpowsour.2011.02.086},
url = {https://juser.fz-juelich.de/record/15819},
}