Journal Article

FZJ-2016-03045

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The Role of Oxygen Partial Pressure in Controlling the Phase Composition of La$_{1−x}$ Sr $_{x}$ Co $_{y}$ Fe$_{1−y}$ O$_{3−δ}$ Oxygen Transport Membranes Manufactured by Means of Plasma Spray-Physical Vapor Deposition

Marcano, D. (Corresponding author)FZJ* ; Mauer, G.FZJ* ; Sohn, Y. J.FZJ* ; Vassen, R.FZJ* ; Garcia-Fayos, J. ; Serra, J. M.

2016
Springer Boston, Mass.

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Please use a persistent id in citations: doi:10.1007/s11666-016-0383-y

Abstract: La0.58Sr0.4Co0.2Fe0.8O3− δ (LSCF) deposited on a metallic porous support by plasma spray-physical vapor deposition is a promising candidate for oxygen-permeation membranes. Ionic transport properties are regarded to depend on the fraction of perovskite phase present in the membrane. However, during processing, the LSCF powder decomposes into perovskite and secondary phases. In order to improve the ionic transport properties of the membranes, spraying was carried out at different oxygen partial pressures p(O2). It was found that coatings deposited at lower and higher oxygen partial pressures consist of 70% cubic/26% rhombohedral and 61% cubic/35% rhombohedral perovskite phases, respectively. During annealing, the formation of non-perovskite phases is driven by oxygen non-stoichiometry. The amount of oxygen added during spraying can be used to increase the perovskite phase fraction and suppress the formation of non-perovskite phases

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 113 - Methods and Concepts for Material Development (POF3-113) (POF3-113)

Appears in the scientific report 2016

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Database coverage:
Current Contents - Engineering, Computing and Technology ; IF < 5 ; JCR ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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