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@ARTICLE{Niewolak:12262,
author = {Niewolak, L. and Wessel, E. and Singheiser, L. and
Quadakkers, W. J.},
title = {{P}otential {S}uitability of {F}erritic and {A}ustenitic
{S}teels as {I}nterconnect {M}aterials for {S}olid {O}xide
{F}uel {C}ells {O}perating at 600°{C}},
journal = {Journal of power sources},
volume = {195},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {PreJuSER-12262},
pages = {7600 - 7608},
year = {2010},
note = {The authors are grateful for financial support from the
European Commission under contract No. SES6-2006-020089
(project SOFC600).},
abstract = {The oxidation behavior of a number of commercially
available ferritic and austenitic steels was tested in air
and in two simulated anode gases of a solid oxide fuel cell
(SOFC) to evaluate the potential suitability as construction
materials for interconnects in SOFC's operating at 600
degrees C. During air exposure all studied materials showed
excellent oxidation resistance due to formation of a
protective, double layered chromia/spinel surface scale even
if the steel Cr content was as low as $17\%.$ However, in
the anode side gases the presence of water vapour (and
possibly CO/CO2) increased the tendency to form poorly
protective Fe-base oxide scales, in combination with
internal oxidation of Cr. The occurrence of this adverse
effect could be suppressed not only by increased Cr contents
of the alloy but also by a small alloy grain size either in
the bulk of the material Or in the specimen/component
surface. The latter can be promoted by cold work e.g.
introduced by specimen/component grinding. As high Cr
contents may lead to undesired sigma-phase formation and
defined surface treatments of an interconnect will not be
possible in all designs, the relatively low operating
temperature of 600 degrees C, resulting in low Cr
diffusivity in the alloy grains, may require the use of a
fine grained interconnect material to obtain and sustain
protective chromia base surface scale formation during
long-term operation. (C) 2010 Elsevier B.V. All rights
reserved.},
keywords = {J (WoSType)},
cin = {IEK-2 / JARA-ENERGY},
ddc = {620},
cid = {I:(DE-Juel1)IEK-2-20101013 / $I:(DE-82)080011_20140620$},
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:000280974800017},
doi = {10.1016/j.jpowsour.2010.06.007},
url = {https://juser.fz-juelich.de/record/12262},
}