TY - JOUR
T1 - High-temperature compressive creep behaviour of perovskite-type oxides SrTi1-xFexO3-δ
AU - ten Donkelaar, S.F.P.
AU - Stournari, V.
AU - Malzbender, J.
AU - Nijmeijer, A.
AU - Bouwmeester, H.J.M.
N1 - Funding Information:
The authors gratefully acknowledge financial support for this research from ADEM, A green Deal in Energy Materials of the Ministry of Economic Affairs of The Netherlands ( www.adem-innovationlab.nl ), and from the Helmholtz Association of German Research Centers (Initiative and Networking Fund) through the MEM-BRAIN Helmholtz Alliance . We further wish to acknowledge Dr. Wessel, Ms. T. Osipova, Mr. R. Küppers and Mr. M. Ziegner for instrumental and technical support, and Dr. G. Pećanac for fruitful discussions.
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - Compressive creep tests have been performed on mixed ionic-electronic conducting perovskite-type oxides SrTi1-xFexO3-δ (STF, x=0.3, 0.5 and 0.7). Observed activation energies and stress exponents, at 800-1000°C and in the stress range 10100MPa, indicate that the steady-state creep rate of STF under these conditions is predominantly limited by cation lattice diffusion (Nabarro-Herring creep). The effective stress exponents reflect a contribution of dislocation creep to the mechanism of creep in STF30 (x=0.3). The observed creep rates are compared with those exhibited by related perovskite-type oxides, and are discussed in view of the possible application of STF as oxygen transport membrane (OTM).
AB - Compressive creep tests have been performed on mixed ionic-electronic conducting perovskite-type oxides SrTi1-xFexO3-δ (STF, x=0.3, 0.5 and 0.7). Observed activation energies and stress exponents, at 800-1000°C and in the stress range 10100MPa, indicate that the steady-state creep rate of STF under these conditions is predominantly limited by cation lattice diffusion (Nabarro-Herring creep). The effective stress exponents reflect a contribution of dislocation creep to the mechanism of creep in STF30 (x=0.3). The observed creep rates are compared with those exhibited by related perovskite-type oxides, and are discussed in view of the possible application of STF as oxygen transport membrane (OTM).
KW - Compressive creep
KW - Oxygen transport membrane (OTM)
KW - Perovskite
KW - SrTiFeO (STF)
KW - 2023 OA procedure
UR - https://www.scopus.com/pages/publications/84940899629
U2 - 10.1016/j.jeurceramsoc.2015.08.002
DO - 10.1016/j.jeurceramsoc.2015.08.002
M3 - Article
SN - 0955-2219
VL - 35
SP - 4203
EP - 4209
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 15
ER -