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| Home > Publications database > Joining of ceramic Ba$_{0.5}$Sr$_{0.5}$Co$_{0.8}$Fe$_{0.2}$O$_{3}$ membranes for oxygen production to high temperature alloys |
| Home > Publications database > Joining of ceramic Ba$_{0.5}$Sr$_{0.5}$Co$_{0.8}$Fe$_{0.2}$O$_{3}$ membranes for oxygen production to high temperature alloys |
| Journal Article | FZJ-2016-01574 |
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2016
Elsevier
New York, NY [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.memsci.2016.01.050
Abstract: The possibility of joining dense ceramic BCSF tubular membranes to metal alloys using a silver braze was investigated. Four different alloys (Crofer 22 APU®, Kanthal APM®, Haynes 214® and EN 1.4841) were considered and the influence of their oxide scale stability/reactivity and their thermal expansion coefficient on the stability of the final joint was evaluated. Leak tight assemblies were obtained only for steels with a thermal expansion coefficient of >16 [10−6 K−1] and protective coating. Proof-of-concept oxygen flux measurements up to 830 °C were performed on these assemblies, demonstrating the functionality of the developed hot sealing. In addition a simulation of the stresses occurring in the joint assembly during use was performed for different materials and geometries. The obtained results fit well with the experimental findings.
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