Journal Article

FZJ-2015-01996

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Creep behavior of porous La$_{0.6}$Sr$_{0.4}$Co$_{0.2}$Fe0.8$_{O3−δ}$ oxygen transport membrane supports

Zou, Y.FZJ* ; Schulze-Küppers, F.FZJ* ; Malzbender, J. (Corresponding Author)FZJ*

2015
Göller Baden-Baden

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Please use a persistent id in citations: doi:10.1016/j.ceramint.2014.11.100

Abstract: Advanced oxygen transport membrane designs rely upon a thin functional layer supported by a porous substrate material that carries the mechanical loads. The creep deformation behavior needs to be assessed in order to warrant a long-term reliable operation at elevated temperatures. The current study reports the creep behavior of porous La0.6Sr0.4Co0.2Fe0.8O3−δ in air for a temperature range of 750–950 °C. Stress exponents and activation energies are derived from the deformation data. A comparison with the creep rates of dense material revealed a progressively increasing creep rate with increasing temperature that might be related to surface diffusional effects. Additional tests at room temperature revealed non-linear stress–strain curves and an apparent ferroelastic creep due to domain switching in the rhombohedral phase that is stable at lower temperature.

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)
2. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 111 - Efficient and Flexible Power Plants (POF3-111) (POF3-111)
2. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2015

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Database coverage:
Current Contents - Engineering, Computing and Technology ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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