Anatase-to-rutile transformation in titania powders

被引：257

作者：

Gouma, PI ^{[1
]}

Mills, MJ ^{[1
]}

机构：

[1] Ohio State Univ, Dept Mat Sci & Engn, Ctr Ind Sensors & Measurements, Columbus, OH 43210 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2001年 / 84卷 / 03期

关键词：

D O I：

10.1111/j.1151-2916.2001.tb00709.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Titania (TiO2) is an important electronic ceramic material for use in diverse applications such as gas sensors, catalysts, dielectrics, and ceramic membranes. TiO2 exists as several polymorphic phases, most commonly as rutile or anatase, This paper investigates the microstructural evolution of anatase-based commercial TiO2 powders, with an average size of 100 nm, at high temperatures. These powders transform to the rutile structure at 1000 degreesC. The characteristics of the anatase-to-rutile transformation have been studied using transmission electron microscopy analysis, and new information regarding the nature and mechanisms of this polymorphic reaction has been revealed.

引用

页码：619 / 622

页数：4

共 15 条

[1]

BANFIELD JF, 1992, AM MINERAL, V77, P545

[2] Correlation between anatase-to-rutile transformation and grain growth in nanocrystalline titania powders [J].

Ding, XZ ;

Liu, XH .

JOURNAL OF MATERIALS RESEARCH, 1998, 13 (09) :2556-2559

[3] Structural stability of titania thin films [J].

Gouma, PI ;

Dutta, PK ;

Mills, MJ .

NANOSTRUCTURED MATERIALS, 1999, 11 (08) :1231-1237

[4] Particle size effects on transformation kinetics and phase stability in nanocrystalline TiO2 [J].

Gribb, AA ;

Banfield, JF .

AMERICAN MINERALOGIST, 1997, 82 (7-8) :717-728

[5] INVESTIGATION OF LOW-ENERGY GRAIN-BOUNDARIES IN METALS BY A SINTERING TECHNIQUE [J].

HERRMANN, G ;

GLEITER, H ;

BARO, G .

ACTA METALLURGICA, 1976, 24 (04) :353-359

[6]

Hishita S., 1983, Ceramics International, V9, P61, DOI 10.1016/0272-8842(83)90025-1

[7] GROWTH OF RUTILE CRYSTALLITES DURING THE INITIAL-STAGE OF ANATASE-TO-RUTILE TRANSFORMATION IN PURE TITANIA AND IN TITANIA-ALUMINA NANOCOMPOSITES [J].

KUMAR, KNP .

SCRIPTA METALLURGICA ET MATERIALIA, 1995, 32 (06) :873-877

[8] THE ATOMIC-STRUCTURE OF TWIN BOUNDARIES IN RUTILE [J].

LEE, WY ;

BRISTOWE, PD ;

GAO, Y ;

MERKLE, KL .

PHILOSOPHICAL MAGAZINE LETTERS, 1993, 68 (05) :309-314

[9] Formation of rutile nuclei at anatase {112} twin interfaces and the phase transformation mechanism in nanocrystalline titania [J].

Penn, RL ;

Banfield, JF .

AMERICAN MINERALOGIST, 1999, 84 (5-6) :871-876

[10]

Povarennykh A.S., 1972, CRYSTAL CHEM CLASSIF

← 1 2 →