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| Home > Publications database > Deposition of La1−x Sr x Fe1−y Co y O3−δ Coatings with Different Phase Compositions and Microstructures by Low-Pressure Plasma Spraying-Thin Film (LPPS-TF) Processes |
| Home > Publications database > Deposition of La1−x Sr x Fe1−y Co y O3−δ Coatings with Different Phase Compositions and Microstructures by Low-Pressure Plasma Spraying-Thin Film (LPPS-TF) Processes |
| Journal Article | PreJuSER-21053 |
; ; ; ;
2012
Springer
Boston, Mass.
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Please use a persistent id in citations: doi:10.1007/s11666-012-9768-8
Abstract: Perovskite-type materials with the general chemical formula A(1-x) A' (x) B1-y B' (y) O3-delta have received considerable attention as candidates for oxygen separation membranes. Preparation of La1-x Sr (x) Fe1-y Co (y) O3-delta (LSFC) coatings by low-pressure plasma spraying-thin film processes using different plasma spray parameters is reported and discussed. Deposition with Ar-He plasma leads to formation of coatings containing a mixture of cubic LSFC perovskite, SrLaFeO4, FeCo, and metal oxides. Coatings deposited at higher oxygen partial pressures by pumping oxygen into the vacuum chamber contain more than 85% perovskite and only a few percent Fe3-x Co (x) O-4, and/or CoO. The microstructures of the investigated LSFC coatings depend sensitively on the oxygen partial pressure, the substrate temperature, the plasma jet velocities, and the deposition rate. Coatings deposited with Ar-rich plasma, relatively low net torch power, and with higher plasma jet velocities are most promising for applications as oxygen permeation membranes.
Keyword(s): J ; low pressure plasma spraying-thin film (LPPS-TF) (auto) ; LSFC (auto) ; oxygen permeation membranes (auto) ; plasma jet velocities (auto) ; x-ray diffraction (auto)
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