Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 2833-2843 |
| Seitenumfang | 11 |
| Fachzeitschrift | Journal of the European Ceramic Society |
| Jahrgang | 35 |
| Ausgabenummer | 10 |
| Frühes Online-Datum | 15 Apr. 2015 |
| Publikationsstatus | Veröffentlicht - 1 Sept. 2015 |
Abstract
The membrane microstructure and phase composition of Ruddlesden-Popper-type La2NiO4+δ ceramics, which were prepared by field-assisted sintering technique/spark plasma sintering (FAST/SPS) process or by conventional pressing and pressureless sintering were investigated. As starting material, a La2NiO4+δ powder, with an average particle size of 0.2μm was used. The grain-size distribution of the resulting membranes varied from 0.015μm2 for FAST/SPS sintered ceramic to 6.11μm2 for pressureless sintered membrane. The microstructure analysis of membranes was performed by transmission and scanning electron microscopy combined with energy-dispersive X-ray spectroscopy and electron energy-loss spectroscopy. Phase transition from orthorhombic to tetragonal crystallographic structure in FAST/SPS material was investigated by temperature-dependent X-ray powder diffraction. The effect of sintering technique and grain size on the oxygen permeation performance of the membranes is discussed with respect to impurities in the material.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Keramische und Verbundwerkstoffe
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
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in: Journal of the European Ceramic Society, Jahrgang 35, Nr. 10, 01.09.2015, S. 2833-2843.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Influence of different sintering techniques on microstructure and phase composition of oxygen-transporting ceramic
AU - Ravkina, Olga
AU - Räthel, Jan
AU - Feldhoff, Armin
N1 - Funding Information: The authors greatly acknowledge financial support from the Chinese-German Centre for Science ( GZ676 ) and the Deutsche Forschungsgemeinschaft ( FE 928/4-1 ) as well as fruitful discussions with Prof. Jürgen Caro. Publisher Copyright: © 2015 Elsevier Ltd.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - The membrane microstructure and phase composition of Ruddlesden-Popper-type La2NiO4+δ ceramics, which were prepared by field-assisted sintering technique/spark plasma sintering (FAST/SPS) process or by conventional pressing and pressureless sintering were investigated. As starting material, a La2NiO4+δ powder, with an average particle size of 0.2μm was used. The grain-size distribution of the resulting membranes varied from 0.015μm2 for FAST/SPS sintered ceramic to 6.11μm2 for pressureless sintered membrane. The microstructure analysis of membranes was performed by transmission and scanning electron microscopy combined with energy-dispersive X-ray spectroscopy and electron energy-loss spectroscopy. Phase transition from orthorhombic to tetragonal crystallographic structure in FAST/SPS material was investigated by temperature-dependent X-ray powder diffraction. The effect of sintering technique and grain size on the oxygen permeation performance of the membranes is discussed with respect to impurities in the material.
AB - The membrane microstructure and phase composition of Ruddlesden-Popper-type La2NiO4+δ ceramics, which were prepared by field-assisted sintering technique/spark plasma sintering (FAST/SPS) process or by conventional pressing and pressureless sintering were investigated. As starting material, a La2NiO4+δ powder, with an average particle size of 0.2μm was used. The grain-size distribution of the resulting membranes varied from 0.015μm2 for FAST/SPS sintered ceramic to 6.11μm2 for pressureless sintered membrane. The microstructure analysis of membranes was performed by transmission and scanning electron microscopy combined with energy-dispersive X-ray spectroscopy and electron energy-loss spectroscopy. Phase transition from orthorhombic to tetragonal crystallographic structure in FAST/SPS material was investigated by temperature-dependent X-ray powder diffraction. The effect of sintering technique and grain size on the oxygen permeation performance of the membranes is discussed with respect to impurities in the material.
KW - Electron microscopy
KW - FAST/SPS sintering
KW - Microstructure
KW - Phase transition
KW - Ruddlesden-Popper phase
UR - http://www.scopus.com/inward/record.url?scp=84928826492&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2015.03.039
DO - 10.1016/j.jeurceramsoc.2015.03.039
M3 - Article
AN - SCOPUS:84928826492
VL - 35
SP - 2833
EP - 2843
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 10
ER -