BICOVOX: Sintering and grain size dependence of the electrical properties

被引：50

作者：

Steil, MC

Fouletier, J

Kleitz, M

Labrune, P

机构：

[1] Inst Natl Polytech Grenoble, Lab Electrochim & Physicochim Mat & Interfaces, F-38402 St Martin Dheres, France

[2] CNRS, F-38402 St Martin Dheres, France

[3] Ctr Rech Claude Delorme, F-78354 Jouy En Josas, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1999年 / 19卷 / 6-7期

关键词：

BICOVOX; grain growth; sintering; grain size; impedance;

D O I：

10.1016/S0955-2219(98)00322-7

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：

The sintering conditions and the effects of the mean grain size on the electrical properties of cobalt-substituted bismuth vanadate (Bi(2)V(0.9)Co(0.1)O(5.35)), referred to as BICOVOX, have been studied. The influence of the experimental conditions (sintering temperature and duration, oxygen partial pressure) on the resulting density of the pellet was evaluated by dilatometric measurements. The grain size dependence of the electrical properties was studied by impedance spectroscopy. It is shown that the BIMEVOX characteristic hysteresis, which results in a significant decrease of the ionic conductivity below about 450 degrees C, is suppressed provided that the grain size is small enough. (C) 1999 Elsevier Science Limited. All rights reserved.

引用

页码：815 / 818

页数：4

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