This title appears in the Scientific Report :
2022
Please use the identifier:
http://hdl.handle.net/2128/31196 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.jeurceramsoc.2022.01.052 in citations.
Sealing behaviour of glass-based composites for oxygen transport membranes
Sealing behaviour of glass-based composites for oxygen transport membranes
In this study, seven different filler materials in different proportions were added to a Ba-Ca-Si glass matrix “H” to investigate new sealant with higher thermal expansion coefficient (CTE) value and good sealing performance for application in oxygen transport membrane (OTM). SrTi0.75Fe0.25O3-δ (STF...
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Personal Name(s): | Li, Xinfang (Corresponding author) |
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Groß-Barsnick, Sonja M. / Koppitz, Thomas / Baumann, Stefan / Meulenberg, Wilhelm A. / Natour, Ghaleb | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 Zentralinstitut für Technologie; ZEA-1 |
Published in: | Journal of the European Ceramic Society, 42 (2022) 6, S. 2879 - 2891 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2022
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DOI: |
10.1016/j.jeurceramsoc.2022.01.052 |
Document Type: |
Journal Article |
Research Program: |
Power-based Fuels and Chemicals |
Link: |
Published on 2022-01-31. Available in OpenAccess from 2024-01-31. Restricted |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1016/j.jeurceramsoc.2022.01.052 in citations.
In this study, seven different filler materials in different proportions were added to a Ba-Ca-Si glass matrix “H” to investigate new sealant with higher thermal expansion coefficient (CTE) value and good sealing performance for application in oxygen transport membrane (OTM). SrTi0.75Fe0.25O3-δ (STF25) was used as an OTM, and the sealing partners were ferritic steel Aluchrom and pre-oxidized Aluchrom. Compatibility tests were carried out to investigate the feasibility of the composites. Higher CTE values were found in dilatometer tests on composite samples by adding 40 wt% Ag (HAg40) and 30 wt% Ni-Cr (HNC30). Gas-tightness measurements of sandwiched samples produced appropriate helium leakage rates in the range of 10−6 mbar·l·s−1. Sealing behaviour of sealants HAg40 and HNC30 were investigated by joining STF25 and as-delivered/pre-oxidized Aluchrom together. Scanning electron microscopy (SEM) on cross-sections of the joints revealed a homogeneous microstructure and good adherence of the glass sealants to support metals and STF25. |