Details
| Original language | English |
|---|---|
| Pages (from-to) | 197-201 |
| Number of pages | 5 |
| Journal | Journal of the American Ceramic Society |
| Volume | 76 |
| Issue number | 1 |
| Publication status | Published - Jan 1993 |
| Externally published | Yes |
Abstract
Valence state and site symmetry of Ti ions in TiO2–Y2O3–ZrO2 powders with 2 mol% Y2O3 and 5, 10, 15, and 20 mol% TiO2, respectively, are studied by X‐ray absorption near‐edge spectroscopy (XANES). Tetravalent Zr4+ ions are replaced predominantly by Ti4+ ions. Within the solubility region of Ti ions, a subsequent displacement of Ti ions from the center of symmetry is observed with increasing TiO2 content in TiO2–Y2O3‐stabilized tetragonal ZrO2 polycrystals (Ti‐Y‐TZP) under investigation. This behavior cannot be interpreted with a random substitution of Ti4+ ions on Zr4+ lattice sites. On the contrary, this correlation between the TiO2 content in Ti‐Y‐TZP and the shift of Ti ions indicates an increasing interaction between the Ti ions with growing TiO2 content, caused by a subsequent clustering of Ti ions.
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Materials Science(all)
- Materials Chemistry
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In: Journal of the American Ceramic Society, Vol. 76, No. 1, 01.1993, p. 197-201.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Synchrotron Radiation Ti‐k XANES Study of TiO2─Y2O3‐Stabilized Tetragonal Zirconia Polycrystals
AU - Zschech, Ehrenfried
AU - Kountouros, Paris N.
AU - Petzow, Günter
AU - Behrens, Peter
AU - Lessmann, Alex
AU - Frahm, Ronald
PY - 1993/1
Y1 - 1993/1
N2 - Valence state and site symmetry of Ti ions in TiO2–Y2O3–ZrO2 powders with 2 mol% Y2O3 and 5, 10, 15, and 20 mol% TiO2, respectively, are studied by X‐ray absorption near‐edge spectroscopy (XANES). Tetravalent Zr4+ ions are replaced predominantly by Ti4+ ions. Within the solubility region of Ti ions, a subsequent displacement of Ti ions from the center of symmetry is observed with increasing TiO2 content in TiO2–Y2O3‐stabilized tetragonal ZrO2 polycrystals (Ti‐Y‐TZP) under investigation. This behavior cannot be interpreted with a random substitution of Ti4+ ions on Zr4+ lattice sites. On the contrary, this correlation between the TiO2 content in Ti‐Y‐TZP and the shift of Ti ions indicates an increasing interaction between the Ti ions with growing TiO2 content, caused by a subsequent clustering of Ti ions.
AB - Valence state and site symmetry of Ti ions in TiO2–Y2O3–ZrO2 powders with 2 mol% Y2O3 and 5, 10, 15, and 20 mol% TiO2, respectively, are studied by X‐ray absorption near‐edge spectroscopy (XANES). Tetravalent Zr4+ ions are replaced predominantly by Ti4+ ions. Within the solubility region of Ti ions, a subsequent displacement of Ti ions from the center of symmetry is observed with increasing TiO2 content in TiO2–Y2O3‐stabilized tetragonal ZrO2 polycrystals (Ti‐Y‐TZP) under investigation. This behavior cannot be interpreted with a random substitution of Ti4+ ions on Zr4+ lattice sites. On the contrary, this correlation between the TiO2 content in Ti‐Y‐TZP and the shift of Ti ions indicates an increasing interaction between the Ti ions with growing TiO2 content, caused by a subsequent clustering of Ti ions.
UR - http://www.scopus.com/inward/record.url?scp=0027186754&partnerID=8YFLogxK
U2 - 10.1111/j.1151-2916.1993.tb03707.x
DO - 10.1111/j.1151-2916.1993.tb03707.x
M3 - Article
AN - SCOPUS:0027186754
VL - 76
SP - 197
EP - 201
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 1
ER -