Fabrication of textured bismuth titanate by templated grain growth using aqueous tape casting

被引：76

作者：

Kan, YM

Wang, PL ^{[1
]}

Li, YX

Cheng, YB

Yan, DS

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Monash Univ, Sch Phys & Mat Engn, Clayton, Vic 3800, Australia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 12期

关键词：

aqueous tape casting; Bi4Ti3O12; dielectric properties; grain growth; microstructure-final; platelets;

D O I：

10.1016/S0955-2219(03)00035-9

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：

Textured bismuth titanate (Bi4Ti3O12) ceramics were fabricated by templated grain growth (TGG), using plate-like Bi4Ti3O12, particles prepared by a molten salt method as the templates. The templates were aligned in the fine-grained matrix by aqueous tape casting with their major surface parallel to the casting plane. Effect of sintering conditions on the grain orientation in the material was investigated. It was found that the degree of grain orientation (Lotgering factor, f) increased with the increase in sintering temperature. soaking time and heating rate. High Lotgering factor (fgreater than or equal to0.92) can be obtained through careful control of the sintering parameters. The textured Bi4Ti3O12 ceramics showed a high anisotropy in its dielectric properties in the directions parallel and perpendicular to the casting plane. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：2163 / 2169

页数：7

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