Synchrotron X-ray powder diffraction study of the tetragonal-cubic phase transition in nanostructured ZrO2-Sc2O3 solid solutions

被引：1

作者：

Abdala, Paula M. ^{[1
]}

Lamas, Diego G. ^{[1
]}

Fernandez de Rapp, Maria E. ^{[1
]}

Walsoee de Reca, Noemi E. ^{[1
]}

Craievich, Aldo F. ^{[2
]}

Fantini, Marcia C. A. ^{[2
]}

机构：

[1] CITEFA CONICET, Inst Invest Cient & Tecn Fuerzas, Ctr Invest Solidos CINSO, Pcia De Buenos Aires, Argentina

[2] Univ Sao Paulo, Inst Fis, BR-05508900 Sao Paulo, Brazil

来源：

POWDER DIFFRACTION | 2008年 / 23卷 / 02期

关键词：

nanocrystalline powders; zirconia-scandia; high-temperature X-ray powder diffraction; synchrotron radiation;

D O I：

10.1154/1.2903426

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The transition between tetragonal and cubic phases in nanostructured ZrO2-Sc2O3 solid solutions by high-temperature X-ray powder diffraction using synchrotron radiation is presented. ZrO2-8 and 11 mol% Sc2O3 nanopowders that exhibit the t'- and t ''-forms of the tetragonal phase, respectively, were synthesized by a stoichiometric nitrate-lysine gel-combustion route. The average crystallite size treated at 900 degrees C was about 25 nm for both compositions. Our results showed that t'-t '' and t ''-cubic transitions take place for the 8 and 11 mol% Sc2O3 samples, respectively. (C) 2008 International Centre for Diffraction Data.

引用

页码：S87 / S90

页数：4

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