Details
| Original language | English |
|---|---|
| Pages (from-to) | 2833-2843 |
| Number of pages | 11 |
| Journal | Journal of the European Ceramic Society |
| Volume | 35 |
| Issue number | 10 |
| Early online date | 15 Apr 2015 |
| Publication status | Published - 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.
Keywords
- Electron microscopy, FAST/SPS sintering, Microstructure, Phase transition, Ruddlesden-Popper phase
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Materials Science(all)
- Materials Chemistry
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In: Journal of the European Ceramic Society, Vol. 35, No. 10, 01.09.2015, p. 2833-2843.
Research output: Contribution to journal › Article › Research › 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 -