This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1111/jace.17583 in citations.
Please use the identifier: http://hdl.handle.net/2128/27181 in citations.
Mechanical reliability of Ce 0.8 Gd 0.2 O 2− δ ‐FeCo 2 O 4 dual phase membranes synthesized by one‐step solid‐state reaction
Mechanical reliability of Ce 0.8 Gd 0.2 O 2− δ ‐FeCo 2 O 4 dual phase membranes synthesized by one‐step solid‐state reaction
Ce0.8Gd0.2O2−δ‐FeCo2O4 composites are attractive candidate materials for high‐purity oxygen generation providing robust chemical stability. Aiming for future industrial applications, a feasible solid‐state reaction process with one thermal processing step was used to synthesize 50 wt% Ce0.8Gd0.2O2−δ...
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Personal Name(s): | Zeng, Fanlin (Corresponding author) |
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Malzbender, Jürgen / Baumann, Stefan / Zhou, Wenyu / Ziegner, Mirko / Nijmeijer, Arian / Guillon, Olivier / Schwaiger, Ruth / Meulenberg, Wilhelm Albert | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 JARA-ENERGY; JARA-ENERGY Werkstoffstruktur und -eigenschaften; IEK-2 |
Published in: | Journal of the American Ceramic Society, 104 (2020) 4, S. 1814-1830 |
Imprint: |
Westerville, Ohio
Soc.
2020
|
DOI: |
10.1111/jace.17583 |
Document Type: |
Journal Article |
Research Program: |
Methods and Concepts for Material Development |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/27181 in citations.
Ce0.8Gd0.2O2−δ‐FeCo2O4 composites are attractive candidate materials for high‐purity oxygen generation providing robust chemical stability. Aiming for future industrial applications, a feasible solid‐state reaction process with one thermal processing step was used to synthesize 50 wt% Ce0.8Gd0.2O2−δ:50 wt% FeCo2O4 and 85 wt% Ce0.8Gd0.2O2−δ:15 wt% FeCo2O4 composites. Mechanical reliabilities of the sintered membranes were assessed based on the characterized mechanical properties and subcritical crack growth behavior. In general, the fracture strengths of as‐sintered membranes were reduced by tensile residual stresses and microcracks. In particular, the enhanced subcritical crack growth behavior, which leads to limited stress tolerance and high failure probability after a 10‐year operation, was evaluated in more detail. Further materials and processing improvements are needed to eliminate the tensile stress and microcracks to warrant a long‐term reliable operation of the composites. |