Home > Publications database > Residual stress and mechanical strength of Ce0.8Gd0.2O2--FeCo2O4 dual phase oxygen transport membranes > print

001     894362
005     20240711092257.0
024 7 _ |a 10.1016/j.jeurceramsoc.2021.06.040
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024 7 _ |a 0955-2219
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024 7 _ |a 1873-619X
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024 7 _ |a 2128/29031
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037 _ _ |a FZJ-2021-03197
082 _ _ |a 660
100 1 _ |a Zeng, Fanlin
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245 _ _ |a Residual stress and mechanical strength of Ce0.8Gd0.2O2--FeCo2O4 dual phase oxygen transport membranes
260 _ _ |a Amsterdam [u.a.]
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520 _ _ |a Ce0.8Gd0.2O2-δ-FeCo2O4 membranes, benefiting from their excellent chemical stability, exhibit a broad application potential in oxygen-consuming industrial processes running in harsh environments. For long-term reliable operation, the membrane needs to possess sufficient mechanical strength. This paper characterizes the typical aspects that challenge the mechanical stability of the sintered membrane, including composition and microstructural defects as well as residual stress and residual stress gradients. It is revealed that mechanical strengths of the sintered membranes increase with decreasing iron cobalt spinel content, that the high iron cobalt spinel content induces microcracks, and that high residual tensile stress gradually decreases from the as-sintered surface to the bulk. Although the residual tensile stress can be reduced by applying an extensive elevated temperature dwell time during cooling, it is suggested to limit the iron cobalt spinel content to a nominal value of 15 wt% to eliminate the residual tensile stress while maintaining a high mechanical strength.
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700 1 _ |a Malzbender, Jürgen
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700 1 _ |a Baumann, Stefan
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700 1 _ |a Nijmeijer, Arian
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700 1 _ |a Winnubst, Louis
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700 1 _ |a Guillon, Olivier
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700 1 _ |a Schwaiger, Ruth
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700 1 _ |a Meulenberg, Wilhelm A.
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773 _ _ |a 10.1016/j.jeurceramsoc.2021.06.040
|g Vol. 41, no. 13, p. 6539 - 6547
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|p 6539 - 6547
|t Journal of the European Ceramic Society
|v 41
|y 2021
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856 4 _ |y Restricted
|u https://juser.fz-juelich.de/record/894362/files/2021%20Jornal%20of%20European%20Ceramic%20Society%2041%20Mechanics%20of%20CGO-FCO.pdf
856 4 _ |y Published on 2021-06-29. Available in OpenAccess from 2022-06-29.
|u https://juser.fz-juelich.de/record/894362/files/Residual%20stress%20and%20mechanical%20strength.pdf
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