%0 Journal Article
%A Li, Xinfang
%A Groß-Barsnick, Sonja M.
%A Koppitz, Thomas
%A Baumann, Stefan
%A Meulenberg, Wilhelm A.
%A Natour, Ghaleb
%T Sealing behaviour of glass-based composites for oxygen transport membranes
%J Journal of the European Ceramic Society
%V 42
%N 6
%@ 0955-2219
%C Amsterdam [u.a.]
%I Elsevier Science
%M FZJ-2022-01859
%P 2879 - 2891
%D 2022
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000766625000001
%R 10.1016/j.jeurceramsoc.2022.01.052
%U https://juser.fz-juelich.de/record/907132