Details
| Original language | English |
|---|---|
| Pages (from-to) | 3750-3755 |
| Number of pages | 6 |
| Journal | Materials letters |
| Volume | 59 |
| Issue number | 28 |
| Early online date | 3 Aug 2005 |
| Publication status | Published - Dec 2005 |
Abstract
Phase structure and stability of three typical mixed ionic and electronic conducting perovskite-type membranes, SrCo0.8Fe0.2O 3-δ (SCF), Ba0.5Sr0.5Co 0.8Fe0.2O3-δ (BSCF) and BaCo 0.4Fe0.4Zr0.2O3-δ (BCFZ) were studied by in situ high temperature X-ray diffraction at temperatures from 303 to 1273 K and under different atmospheres (air, 2% O2 in Ar and pure Ar) at 1173 K. By analyzing their lattice parameters the thermal expansion coefficients (TECs) of BSCF, SCF and BCZF are obtained to be 11.5 × 10- 6 K- 1, 17.9 × 10- 6 K- 1 and 10.3 × 10- 6 K- 1, respectively. A relationship between phase stability and TEC was proposed: the higher is the TEC, the lower is the operation stability of the perovskite materials.
Keywords
- Membrane, Mixed conductor, Oxygen separation, Perovskite, POM
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Materials letters, Vol. 59, No. 28, 12.2005, p. 3750-3755.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - In situ high temperature X-ray diffraction studies of mixed ionic and electronic conducting perovskite-type membranes
AU - Wang, Haihui
AU - Tablet, Cristina
AU - Yang, Weishen
AU - Caro, Jürgen
PY - 2005/12
Y1 - 2005/12
N2 - Phase structure and stability of three typical mixed ionic and electronic conducting perovskite-type membranes, SrCo0.8Fe0.2O 3-δ (SCF), Ba0.5Sr0.5Co 0.8Fe0.2O3-δ (BSCF) and BaCo 0.4Fe0.4Zr0.2O3-δ (BCFZ) were studied by in situ high temperature X-ray diffraction at temperatures from 303 to 1273 K and under different atmospheres (air, 2% O2 in Ar and pure Ar) at 1173 K. By analyzing their lattice parameters the thermal expansion coefficients (TECs) of BSCF, SCF and BCZF are obtained to be 11.5 × 10- 6 K- 1, 17.9 × 10- 6 K- 1 and 10.3 × 10- 6 K- 1, respectively. A relationship between phase stability and TEC was proposed: the higher is the TEC, the lower is the operation stability of the perovskite materials.
AB - Phase structure and stability of three typical mixed ionic and electronic conducting perovskite-type membranes, SrCo0.8Fe0.2O 3-δ (SCF), Ba0.5Sr0.5Co 0.8Fe0.2O3-δ (BSCF) and BaCo 0.4Fe0.4Zr0.2O3-δ (BCFZ) were studied by in situ high temperature X-ray diffraction at temperatures from 303 to 1273 K and under different atmospheres (air, 2% O2 in Ar and pure Ar) at 1173 K. By analyzing their lattice parameters the thermal expansion coefficients (TECs) of BSCF, SCF and BCZF are obtained to be 11.5 × 10- 6 K- 1, 17.9 × 10- 6 K- 1 and 10.3 × 10- 6 K- 1, respectively. A relationship between phase stability and TEC was proposed: the higher is the TEC, the lower is the operation stability of the perovskite materials.
KW - Membrane
KW - Mixed conductor
KW - Oxygen separation
KW - Perovskite
KW - POM
UR - http://www.scopus.com/inward/record.url?scp=27144454307&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2005.06.067
DO - 10.1016/j.matlet.2005.06.067
M3 - Article
AN - SCOPUS:27144454307
VL - 59
SP - 3750
EP - 3755
JO - Materials letters
JF - Materials letters
SN - 0167-577X
IS - 28
ER -