Preparation of dense, ultra-thin MIEC ceramic membranes by atmospheric spray-pyrolysis technique
| Autor: | Albert Figueras, Simon A. Rushworth, Z Salciunas, V. Kubilius, G Garcia, Adulfas Abrutis, Z. Saltyte, V Faucheux, A. Teiserskis |
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| Rok vydání: | 2004 |
| Předmět: |
Materials science
Oxide chemistry.chemical_element Ionic bonding Mineralogy Filtration and Separation Biochemistry Thermal expansion chemistry.chemical_compound Membrane chemistry Chemical engineering visual_art Lanthanum visual_art.visual_art_medium General Materials Science Ceramic Physical and Theoretical Chemistry Thin film Perovskite (structure) |
| Zdroj: | Journal of Membrane Science. 240:113-122 |
| ISSN: | 0376-7388 |
| DOI: | 10.1016/j.memsci.2004.03.043 |
| Popis: | Dense ceramic mixed ionic and electronic conducting membranes have been deposited by atmospheric spray-pyrolysis technique onto porous ceramic substrates. Perovskite oxide layers, i.e. manganites La1−xSrxMnO3, ferrites La1−xSrxFe1−y(Co,Ni)yO3, gallates La1−xSrxGa1−y(Co,Ni,Fe)yO3, cobaltites La1−xSrxCoO3 and related perovskites such as lanthanum nickelate La2NiO4 layers have been prepared. The structure, morphology and composition of the layers were characterised by XRD, SEM and WDS, respectively. Density and gas tightness of the layers were studied as a function of deposition process parameters, film thickness (from ∼0.5 to ∼3 μm) and preparation procedure. The presence of cracks and defects due to thermo-mechanical stresses applied during or after the preparation process were correlated with the membrane composition and the corresponding thermal expansion coefficient differences between substrates and membranes. |
| Databáze: | OpenAIRE |
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