MICROSTRUCTURAL STUDY OF VANADIUM-TITANIUM OXIDE POWDERS OBTAINED BY LASER-INDUCED SYNTHESIS

被引：32

作者：

DEPERO, LE ^{[1
]}

BONZI, P ^{[1
]}

MUSCI, M ^{[1
]}

CASALE, C ^{[1
]}

机构：

[1] CISE TECHNOL INNOVAT,MILAN,ITALY

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1994年 / 111卷 / 02期

关键词：

D O I：

10.1006/jssc.1994.1224

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Using laser-induced pyrolysis, powder samples of pure TiO2 and mixed oxides with different vanadium content were prepared and analyzed by XRD. The diffraction patterns were interpreted in microstructural terms by Fourier analysis of their peak profiles. The influence of vanadium on the phase transition was studied and the changes in the particle and microstrain distributions obtained at different temperatures were analyzed. There is an evident correlation between the initial microstrain distribution in the Ti1-xVxO2 powder and the vanadium content. The segregation of the V2O5 phase causes a strain reduction into the anatase structure. We suggest that the previously observed lowering of the transition temperature for the anatase-to-rutile transformation in the presence of vanadium is due to distortions induced by this ion in the anatase structure. (C) 1994 Academic Press, Inc.

引用

页码：247 / 252

页数：6

共 8 条

[1] SYNTHESIS OF ULTRAFINE TIO2 POWDERS BY A CW CO2-LASER [J].