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@INPROCEEDINGS{SchulzeKppers:849536,
author = {Schulze-Küppers, Falk and Silva, Rafael and Baumann,
Stefan and Malzbender, Jürgen and Krüger, Manja and
Guillon, Olivier},
title = {{M}echanical properties and lifetime predictions of
{S}r{T}i1-x{F}ex{O}3-d (x = 0.25, 0.35, 0.5)},
reportid = {FZJ-2018-03719},
year = {2018},
abstract = {Oxygen transport membranes based on mixed ionic-electronic
conducting ceramics can be an alternative to existing
state-of-the-art processes for oxygen production in small
and medium scale. Typically, such membranes have to be
operated at 800 - 900 °C and under large pressure
gradients, which challenges significantly the mechanical
stability of the respective ceramic components. The current
work concentrates on the mechanical characterization of
promising oxygen transport perovskite membranes based on
SrTi1-xFexO3-δ, (STFx) with x = 0.25, 0.35 and 0.5. The
materials were synthesized through solid state reaction and
most mechanical testing relevant specimens were obtained by
tape casting. The mechanical stability was assessed via
ring-on-ring bending tests serving the estimate of
materials’ reliabilities and lifetime. Furthermore, aiming
towards the determination of the mechanical stability at the
operational relevant temperatures, flexural tests were
conducted at 900 °C, where the derived fracture stress
revealed to be higher. Hence, it appears that the material
undergoes stress relaxation at high temperature associated
to an anelastic behavior that might relate to a strong
primary creep. Overall, the current study aids the
adjustment of the membrane design regarding the process
requirements, while data for mechanically derived lifetime
predictions are acquired for STF based membranes.},
month = {Jun},
date = {2018-06-18},
organization = {15th International Conference on
Inorganic Membranes, Dresden (Germany),
18 Jun 2018 - 22 Jun 2018},
subtyp = {After Call},
cin = {IEK-1 / IEK-2 / JARA-ENERGY},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013 /
$I:(DE-82)080011_20140620$},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/849536},
}