Grain growth behaviour of ZnO-based multilayer varistors

被引：15
|
作者：
Kuo, Shu-Ting [1 ]
Tuan, Wei-Hsing [1 ]
机构：
[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2010年 / 30卷 / 02期
关键词：
ZnO; Varistor; Microstructure-final; Firing; Multilayer; ZINC-OXIDE VARISTORS; ELECTRICAL-PROPERTIES; BI2O3-DOPED ZNO; CERAMICS; BI2O3;
D O I：
10.1016/j.jeurceramsoc.2009.05.008
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：
In the present study, a model multilayer structure composing of seven Bi2O3-doped ZnO layers and AgPd inner electrodes is prepared. The Bi2O3-doped ZnO bulk specimens are also prepared for comparison purpose. The size of ZnO grains in the muitilayer specimens is smaller than that in the bulk specimen. Furthermore, the size of ZnO grains in the multilayer specimens decreases with the decrease of layer thickness. Microstructure analysis demonstrates that the Bi2O3-rich liquid phase wets not only the ZnO grains but also the AgPd electrodes. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：525 / 530
页数：6
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