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000017253 0247_ $$2DOI$$a10.1016/j.memsci.2011.07.036
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000017253 084__ $$2WoS$$aEngineering, Chemical
000017253 084__ $$2WoS$$aPolymer Science
000017253 1001_ $$0P:(DE-Juel1)VDB93654$$aRutkowski, B.$$b0$$uFZJ
000017253 245__ $$aInfluence of Thermal History on the Cubic-To-Hexagonal Phase Transformation and Creep Behaviour of Ba0.5Sr0.5Co0.8Fe0.2O3 Ceramics
000017253 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2011
000017253 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000017253 440_0 $$03536$$aJournal of Membrane Science$$v381$$x0376-7388$$y1
000017253 500__ $$aThe authors would like to express their gratitude to T. Osipova, J. Monch and R. Kuppers for the experimental support for the creep tests and Dr. R. Kriegel, IKTS-HITK for providing the BSCF specimens. This work was supported by the Initiative and Networking Fund of the Helmholtz Association, contract HA-104 ("MEM-BRAIN").
000017253 520__ $$aThe influence of the partial cubic-to-hexagonal phase transformation of Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) on the creep behaviour of this perovskite-type oxygen transport membrane was investigated. Isothermal compressive creep tests were carried out in air in the temperature range 750-950 degrees C. Arrhenius plots of the creep rate revealed a significant hysteresis effect. During heating, the creep rate changed slightly up to about 850 degrees C and increased substantially above this temperature. Upon cooling from 950 degrees C it decreased in a nearly linear manner to temperature. Microstructural investigations support the conclusion that the hysteresis is linked with the growth and transformation kinetics of the hexagonal polymorph at the boundaries of cubic grains of BSCF. (C) 2011 Elsevier B.V. All rights reserved.
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000017253 65320 $$2Author$$aOxygen separation
000017253 65320 $$2Author$$aCeramic membranes
000017253 65320 $$2Author$$aCreep
000017253 65320 $$2Author$$aStability
000017253 65320 $$2Author$$aPhase transformation
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000017253 7001_ $$0P:(DE-Juel1)129755$$aMalzbender, J.$$b1$$uFZJ
000017253 7001_ $$0P:(DE-Juel1)VDB98094$$aSteinbrech, R.W.$$b2$$uFZJ
000017253 7001_ $$0P:(DE-Juel1)129685$$aBeck, T.$$b3$$uFZJ
000017253 7001_ $$0P:(DE-HGF)0$$aBouwmeester, H.J.M.$$b4
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000017253 8567_ $$uhttp://dx.doi.org/10.1016/j.memsci.2011.07.036
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