TY  - JOUR
AU  - Xing, Y.
AU  - Baumann, S.
AU  - Sebold, D.
AU  - Ruettinger, M.
AU  - Venskutonis, A.
AU  - Meulenberg, W.A.
AU  - Stoever, D.
TI  - Chemical Compatibility Investigation of Thin-Film Oxygen Transport Membranes on Metallic Substrates
JO  - Journal of the American Ceramic Society
VL  - 94
SN  - 0002-7820
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - PreJuSER-14681
SP  - 861 - 866
PY  - 2011
N1  - This work was supported by the Helmholtz Association of German Research Centres (Initiative and Networking Fund), under the Helmholtz Alliance MEM-BRAIN).
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000288261500042
DO  - DOI:10.1111/j.1551-2916.2010.04171.x
UR  - https://juser.fz-juelich.de/record/14681
ER  -