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000008898 0247_ $$2DOI$$a10.1016/j.memsci.2009.11.047
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000008898 1001_ $$0P:(DE-Juel1)VDB77935$$aHuang, B.X.$$b0$$uFZJ
000008898 245__ $$aMechanical aspects of ferro-elastic behavior and phase composition of La0.58Sr0.4Co0.2Fe0.8O3
000008898 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2010
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000008898 440_0 $$03536$$aJournal of Membrane Science$$v349$$x0376-7388$$y1
000008898 500__ $$aThe work was funded by the German Ministry of Economics and Technology (BMWI) as part of the research activities in the membrane project "OXYMEM". The authors would like to express their gratitude to Dr. W. Meulenberg and Dr. S. Baumann for preparing and supplying the disk-shaped LSCF specimens. In addition, the invaluable support by XRD characterization provided by Dr. W. Fischer is highly appreciated.
000008898 520__ $$aPhase composition and thermo-mechanical properties of La0.58Sr0.4Co0.2Fe0.8O3-delta (LSCF) have been studied. The LSCF perovskite material comprised two phases: rhombohedral and cubic, with a ratio that showed to depend on both cooling rate as well as atmosphere. The fracture stress of LSCF was determined on the basis of ring-on-ring bending tests between room temperature (RT) and 800 degrees C. Below 700 degrees C nonlinear load-displacement curves were obtained, an effect that is attributed to the ferro-elasticity of the rhombohedral phase. Both SEM and TEM verify the existence of a domain structure in the rhombohedral grains. The indentation fracture toughness appears to be insensitive to temperature variations from RT up to 350 degrees C. The importance of thermal history on phase composition and the resulting thermo-mechanical behavior is discussed. (C) 2009 Elsevier B.V. All rights reserved.
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000008898 65320 $$2Author$$aCeramics
000008898 65320 $$2Author$$aMembranes
000008898 65320 $$2Author$$aFracture
000008898 65320 $$2Author$$aOxygen separation
000008898 65320 $$2Author$$aMechanical properties
000008898 7001_ $$0P:(DE-Juel1)129755$$aMalzbender, J.$$b1$$uFZJ
000008898 7001_ $$0P:(DE-Juel1)VDB1573$$aSteinbrech, R. W.$$b2$$uFZJ
000008898 7001_ $$0P:(DE-Juel1)129810$$aWessel, E.$$b3$$uFZJ
000008898 7001_ $$0P:(DE-Juel1)VDB85249$$aPenkalla, H.-J.$$b4$$uFZJ
000008898 7001_ $$0P:(DE-Juel1)129795$$aSingheiser, L.$$b5$$uFZJ
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