Gesing, Thorsten M. ORCID: 0000-0002-4119-2219, Fischer, Reinhard X., Burianek, Manfred, Muehlberg, Manfred, Debnath, Tapas, Ruescher, Claus H., Ottinger, Jan, Buhl, J. -Christian and Schneider, Hartmut (2011). Synthesis and properties of mullite-type (Bi1-xSrx)(2)((M1-yMy2)-M-1)(4)O9-x (M = Al, Ga, Fe). J. Eur. Ceram. Soc., 31 (16). S. 3055 - 3063. OXFORD: ELSEVIER SCI LTD. ISSN 1873-619X

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Abstract

Mullite-type A(2)M(4)O(9) phases (M = Al, Ga, Fe), representing promising oxygen conducting materials for solid oxide fuel cells (SOFCs), were synthesized using the glycerine- and the EDTA/citric acid synthesis method. For strontium-doped material pure phases could be obtained only by washing the samples after the heating in both synthesis methods. Temperature dependent investigations were carried out to show the influence of the metal atoms on the structural stability and thermal expansion coefficients. Whereas the Sr-free phases show a quasi linear thermal expansion behavior in all three directions up to their incongruent melting points, a discontinuity in the measured range is observed for the investigated strontium doped dibismuth-nonaoxotetrametallate(III) caused by the decomposition into Bi2M4O9, strontium metallates and bismuthoxide. Big single crystals were only observed for the Sr-free compound, of which the structure of Bi-2(Ga0.45Fe0.55)(4)O-9 will be presented here in the Barnighausen tree corresponding mulfite-type setting. (C) 2011 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Gesing, Thorsten M.UNSPECIFIEDorcid.org/0000-0002-4119-2219UNSPECIFIED
Fischer, Reinhard X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Burianek, ManfredUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Muehlberg, ManfredUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Debnath, TapasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ruescher, Claus H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ottinger, JanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Buhl, J. -ChristianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneider, HartmutUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-484891
DOI: 10.1016/j.jeurceramsoc.2011.04.004
Journal or Publication Title: J. Eur. Ceram. Soc.
Volume: 31
Number: 16
Page Range: S. 3055 - 3063
Date: 2011
Publisher: ELSEVIER SCI LTD
Place of Publication: OXFORD
ISSN: 1873-619X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
OXIDE-ION CONDUCTIVITY; BI2AL4O9Multiple languages
Materials Science, CeramicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/48489

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