Dense ceramics of BaTiO3 produced from powders prepared by a chemical process

被引：31

作者：

Miot, C

Proust, C

Husson, E

机构：

[1] UNIV ORLEANS,ESEM,LAB PHYS & MECAN MAT,F-45071 ORLEANS 2,FRANCE

[2] CNRS,CRPHT,F-45071 ORLEANS 2,FRANCE

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1995年 / 15卷 / 12期

关键词：

D O I：

10.1016/0955-2219(95)00090-9

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：

A sintering optimization of barium titanate ceramics from fine-grained and homogeneous reproducible powders obtained by the citric process is presented. Different sintering parameters are studied. heating rates, final temperature, dwelling rimes at this final temperature, and influence of the powder deagglomeration step. The sintering is followed by dilatometric measurements The ceramics obtained by sintering at 1230 or 1300 degrees C are fi ee of barium carbonate, the residual carbon content being estimated at about 400 ppm in the surface layer. They exhibit a grain size close to I mu m, a structure in which the cubic and tetragonal phases coexist, and a density of about 96% of the theoretical density. Their permittivity and loss factor are respectively about 5000 and 2.5 X 10(-2) at 25 degrees C.

引用

页码：1163 / 1170

页数：8

共 17 条

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