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@ARTICLE{Zeng:888275,
author = {Zeng, Fanlin and Malzbender, Jürgen and Baumann, Stefan
and Nijmeijer, Arian and Winnubst, Louis and Ziegner, Mirko
and Guillon, Olivier and Schwaiger, Ruth and Meulenberg,
Wilhelm Albert},
title = {{O}ptimization of sintering conditions for improved
microstructural and mechanical properties of dense
{C}e0.8{G}d0.2{O}2--{F}e{C}o2{O}4 oxygen transport
membranes},
journal = {Journal of the European Ceramic Society},
volume = {41},
number = {1},
issn = {0955-2219},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2020-04801},
pages = {509 - 516},
year = {2021},
abstract = {Ce0.8Gd0.2O2-δ-FeCo2O4 composite is an excellent oxygen
transport membrane material with good chemical stability for
applications in oxygen separation and membrane reactors. To
improve microstructural and mechanical properties, sintering
profiles for Ce0.8Gd0.2O2-δ-FeCo2O4 composites were
optimized. Different sintering temperatures are selected
based on our study of phase interactions among the initial
powder mixtures using high-temperature X-ray diffraction.
The results reveal that the phase interaction at ∼1050 ℃
accelerates densification process, and a further increase of
sintering temperature to 1200 ℃ contributes to the
homogenization of the pore distribution. A higher density
and an improved homogeneity of pore distribution result in
enhanced mechanical strength. However, the density decreases
once the sintering temperature reaches 1350 ℃. Hence, the
optimal sintering temperature considering both
microstructural and mechanical properties appears to be 1200
℃. Sintering at this temperature results in a
microstructure with a density exceeding 99 $\%$ with only
small surface defects and a high average flexural strength
of approximately 266 MPa.},
cin = {IEK-1 / IEK-2},
ddc = {660},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013},
pnm = {1232 - Power-based Fuels and Chemicals (POF4-123)},
pid = {G:(DE-HGF)POF4-1232},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000582675600057},
doi = {10.1016/j.jeurceramsoc.2020.09.009},
url = {https://juser.fz-juelich.de/record/888275},
}