Synthesis of stable nanocrystalline cubic zirconia

Authors
Citation
S. Roy et J. Ghose, Synthesis of stable nanocrystalline cubic zirconia, MATER RES B, 35(7), 2000, pp. 1195-1203
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS RESEARCH BULLETIN
ISSN journal
00255408 → ACNP
Volume
35
Issue
7
Year of publication
2000
Pages
1195 - 1203
Database
ISI
SICI code
0025-5408(200005)35:7<1195:SOSNCZ>2.0.ZU;2-I
Abstract
Nanocrystalline pure cubic zirconia was prepared by precipitation in polyme r matrix. The average particle size obtained by this method was smaller tha n that obtained by aqueous coprecipitation. X-ray diffraction showed that t he cubic form is stable in air up to 1173 K and partially stable in an iner t argon atmosphere up to 1273 K. The stability of the cubic phase of ZrO2 a t such high temperatures was due to the presence of surface and bulk oxygen vacancies present in the nanocrystalline samples. Polymer decomposition du ring calcination increased oxygen vacancies already present in the nanocrys talline samples. (C) 2000 Elsevier Science Ltd. All rights reserved.