Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 3055-3062 |
| Seitenumfang | 8 |
| Fachzeitschrift | Journal of the European Ceramic Society |
| Jahrgang | 31 |
| Ausgabenummer | 16 |
| Frühes Online-Datum | 4 Mai 2011 |
| Publikationsstatus | Veröffentlicht - Dez. 2011 |
Abstract
Mullite-type A2M4O9 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 Bi2(Ga0.45Fe0.55)4O9 will be presented here in the Bärnighausen tree corresponding mullite-type setting.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Keramische und Verbundwerkstoffe
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
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in: Journal of the European Ceramic Society, Jahrgang 31, Nr. 16, 12.2011, S. 3055-3062.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Synthesis and properties of mullite-type (Bi1-xSrx)2(M11-yM2y)4O9-x (M=Al, Ga, Fe)
AU - Gesing, Thorsten M.
AU - Fischer, Reinhard X.
AU - Burianek, Manfred
AU - Mühlberg, Manfred
AU - Debnath, Tapas
AU - Rüscher, Claus H.
AU - Ottinger, Jan
AU - Buhl, J. Christian
AU - Schneider, Hartmut
N1 - Funding Information: We gratefully acknowledge the “Deutsche Forschungsgemeinschaft” for financial support in the projects GE1981/2-1, FI442/14-1 and MU1006/8-1 as part of the joint project PAK279.
PY - 2011/12
Y1 - 2011/12
N2 - Mullite-type A2M4O9 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 Bi2(Ga0.45Fe0.55)4O9 will be presented here in the Bärnighausen tree corresponding mullite-type setting.
AB - Mullite-type A2M4O9 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 Bi2(Ga0.45Fe0.55)4O9 will be presented here in the Bärnighausen tree corresponding mullite-type setting.
KW - Crystal structure
KW - EDTA/citric acid method
KW - Glycerine method
KW - Mullite-type compounds
KW - Thermal expansion
UR - http://www.scopus.com/inward/record.url?scp=80053446112&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2011.04.004
DO - 10.1016/j.jeurceramsoc.2011.04.004
M3 - Article
AN - SCOPUS:80053446112
VL - 31
SP - 3055
EP - 3062
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 16
ER -