TY  - JOUR
AU  - Li, Xinfang
AU  - Groß-Barsnick, Sonja M.
AU  - Koppitz, Thomas
AU  - Baumann, Stefan
AU  - Meulenberg, Wilhelm A.
AU  - Natour, Ghaleb
TI  - Sealing behaviour of glass-based composites for oxygen transport membranes
JO  - Journal of the European Ceramic Society
VL  - 42
IS  - 6
SN  - 0955-2219
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2022-01859
SP  - 2879 - 2891
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000766625000001
DO  - DOI:10.1016/j.jeurceramsoc.2022.01.052
UR  - https://juser.fz-juelich.de/record/907132
ER  -