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@ARTICLE{Abaza:894626,
author = {Abaza, Amira and Meille, Sylvain and Nakajo, Arata and
Leguillon, Dominique and Hubert, Maxime and Lenser, C. and
Laurencin, Jérôme},
title = {{F}racture of {P}orous {C}eramics: {A}pplication to the
{M}echanical {D}egradation of {S}olid {O}xide {C}ell
{D}uring {R}edox {C}ycling},
journal = {ECS transactions},
volume = {103},
number = {1},
issn = {1938-6737},
address = {Pennington, NJ},
reportid = {FZJ-2021-03323},
pages = {1151 - 1163},
year = {2021},
abstract = {A model based on the Phase Field approach has been
developed to simulate the local fracture in porous electrode
microstructures. The model capacity to predict the crack
nucleation and propagation has been studied with theoretical
considerations. For the model validation, micro-compression
tests have been performed on porous YSZ micro-pillars. As
expected, the compressive fracture strength has been found
to decrease with the material porosity. Moreover, a
transition in fracture mode has been detected from a brittle
behavior toward a local damage when increasing the porosity.
It has been shown that the model is able to reproduce
correctly the experimental results. The validated model has
been used to simulate the fracture of the YSZ backbone
induced by the Ni re-oxidation in a typical Ni-YSZ cermet.
The generation and localization of the micro-cracks have
been discussed according to the degree of Ni re-oxidation
and the local morphology of the electrode microstructure.},
cin = {IEK-1},
ddc = {540},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123) /
Development of improved anodes in solid oxide fuel cells for
conversion of synthesis gas from thermo-chemical
gasification of biomass (275388933) / SOFC - Solid Oxide
Fuel Cell (SOFC-20140602)},
pid = {G:(DE-HGF)POF4-1231 / G:(GEPRIS)275388933 /
G:(DE-Juel1)SOFC-20140602},
typ = {PUB:(DE-HGF)16},
doi = {10.1149/10301.1151ecst},
url = {https://juser.fz-juelich.de/record/894626},
}