Hostname: page-component-7b7567c8c-jswmv Total loading time: 0 Render date: 2026-11-15T17:43:33.850Z Has data issue: false hasContentIssue false

Crystal structure and local order of nanocrystalline zirconia-based solid solutions

Published online by Cambridge University Press:  06 March 2012

I. O. Fábregas
Affiliation:
Centro de Investigaciones en Sólidos (CINSO), Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas-Consejo Nacional de Investigaciones Científicas y Técnicas (CITEFA-CONICET), J.B. de La Salle 4397, 1603 Villa Martelli, Pcia. de Buenos Aires, Argentina
D. G. Lamas
Affiliation:
Centro de Investigaciones en Sólidos (CINSO), Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas-Consejo Nacional de Investigaciones Científicas y Técnicas (CITEFA-CONICET), J.B. de La Salle 4397, 1603 Villa Martelli, Pcia. de Buenos Aires, Argentina
L. M. Acuña
Affiliation:
Centro de Investigaciones en Sólidos (CINSO), Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas-Consejo Nacional de Investigaciones Científicas y Técnicas (CITEFA-CONICET), J.B. de La Salle 4397, 1603 Villa Martelli, Pcia. de Buenos Aires, Argentina
N. E. Walsöe de Reca
Affiliation:
Centro de Investigaciones en Sólidos (CINSO), Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas-Consejo Nacional de Investigaciones Científicas y Técnicas (CITEFA-CONICET), J.B. de La Salle 4397, 1603 Villa Martelli, Pcia. de Buenos Aires, Argentina
A. F. Craievich
Affiliation:
Instituto de Física, Universidade de São Paulo, Rua do Matão Travessa R 187, 05508-900 São Paulo, São Paulo, Brazil
M. C. A. Fantini
Affiliation:
Instituto de Física, Universidade de São Paulo, Rua do Matão Travessa R 187, 05508-900 São Paulo, São Paulo, Brazil
R. J. Prado
Affiliation:
Departamento de Física, Instituto de Ciências Exatas e da Terra, Universidade Federal de Mato Grosso, Av. Fernando Corrêa s/n, Coxipó, 78060-900 Cuiabá, Mato Grosso, Brazil
Get access

Abstract

Crystal and local structures (long- and short-range order, respectively) of four nanocrystalline zirconia-based solid solutions—ZrO2-6 and 16 mol % CaO and ZrO2-2.8 and 12 mol % Y2O3—synthesized by a pH-controlled nitrate-glycine gel-combustion process were studied. These materials were characterized by synchrotron X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) spectroscopy. Our XRD results indicate that the solid solution with low CaO and Y2O3 contents (6 and 2.8 mol %, respectively) exhibit a tetragonal crystallographic lattice, and those with higher CaO and Y2O3 contents (16 and 12 mol %, respectively) have a cubic lattice. Moreover, our EXAFS study demonstrates that the tetragonal-to-cubic phase transitions, for increasing CaO and Y2O3 contents, are both related to variations in the local symmetry of the Zr–O first neighbor coordination sphere.

Information

Type
Technical Articles
Copyright
Copyright © Cambridge University Press 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable