%0 Journal Article
%A Xing, Y.
%A Baumann, S.
%A Sebold, D.
%A Ruettinger, M.
%A Venskutonis, A.
%A Meulenberg, W.A.
%A Stoever, D.
%T Chemical Compatibility Investigation of Thin-Film Oxygen Transport Membranes on Metallic Substrates
%J Journal of the American Ceramic Society
%V 94
%@ 0002-7820
%C Oxford [u.a.]
%I Wiley-Blackwell
%M PreJuSER-14681
%P 861 - 866
%D 2011
%Z This work was supported by the Helmholtz Association of German Research Centres (Initiative and Networking Fund), under the Helmholtz Alliance MEM-BRAIN).
%X Thin-film La0.58Sr0.4Co0.2Fe0.8O3−δ (LSCF58428) exhibits high oxygen permeability due to its high ionic and electronic conductivity. In order to increase the oxygen flux, a thin-film membrane on a structural substrate is beneficial. Different Ni-based alloys were studied as potential substrate materials. The chemical compositions and thermal expansion coefficients of Ni-based alloys were measured in this study. LSCF58428 layers were screen printed on Ni-based alloys and cofired at a high temperature in air. Microstructural and elemental analyses of samples were conducted using a scanning electron microscope and energy-dispersive X-ray spectroscope. X-ray diffraction was used to investigate the phase compositions. The Ni-based alloy, MCrAlY (with M=Ni, Co), with a high Al content showed better chemical compatibility with perovskite material at high temperatures than other Ni-based alloys. A reaction occurred between Sr in the perovskite and the alumina-based surface layer on MCrAlY. However, the reaction zone was found to be stable in mid-term annealing at 800°C in air. Hence, it is expected that this reaction will not prevent application as an oxygen transport membrane. Three different cofiring atmospheres were investigated. Air was found to be the only possible cofiring atmosphere.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000288261500042
%R 10.1111/j.1551-2916.2010.04171.x
%U https://juser.fz-juelich.de/record/14681