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@ARTICLE{Ananyev:202228,
author = {Ananyev, M. V. and Bronin, D. I. and Osinkin, D. A. and
Eremin, V. A. and Steinberger-Wilckens, R. and de Haart,
L.G.J. and Mertens, Josef},
title = {{C}haracterization of {N}i-cermet degradation phenomena
{I}. {L}ong termresistivity monitoring, image processing and
{X}-ray fluorescenceanalysis},
journal = {Journal of power sources},
volume = {286},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2015-04517},
pages = {414 - 426},
year = {2015},
abstract = {The present paper is devoted to Ni-cermet degradation
phenomena and places emphasis on experimental approaches and
data handling. The resistivity of Ni-YSZ cermet (nickel and
8 $mol.\%$ yttria stabilized zirconia) anode substrates was
monitored during 3000 h at 700 and 800 °C in a gas mixture
of 80 $vol.\%$ water vapor and 20 $vol.\%$ hydrogen. The
experimentally evaluated dependence of resistivity of the
Ni-YSZ substrates can be well described by exponential decay
functions. Post test analysis by image processing and XRF
(X-ray fluorescence) analysis for characterization of the
microstructure and elemental composition were carried out
for virgin samples and after 300, 1000 and 3000 h of
exposure time. The 3D-microstructure was reconstructed using
an original spheres packing algorithm. Two processes leading
to the Ni-YSZ degradation were observed: Ni-phase particle
coarsening and volatilization. The effect of these processes
on resistivity and such microstructure parameters as
porosity, Ni-phase fraction, Ni and YSZ phases particle size
distributions, triple phase boundary length, and tortuosity
factor are considered in this paper.},
cin = {IEK-9},
ddc = {620},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {135 - Fuel Cells (POF3-135)},
pid = {G:(DE-HGF)POF3-135},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000355027400048},
doi = {10.1016/j.jpowsour.2015.03.168},
url = {https://juser.fz-juelich.de/record/202228},
}