Control of microstructure in TiO2-doped ceramic varistors based in the ZnO-Bi2O3-Sb2O3 system

被引:2
|
作者
Cruz, A. M. [1 ]
Reyes, Y. [1 ]
Gallego, B. [2 ]
Fernandez-Hevia, D. [2 ,3 ]
Peiteado, M. [1 ]
机构
[1] CSIC, Inst Ceram & Vidrio, Dept Electroceram, Madrid 28049, Spain
[2] INAEL Elect Syst SA, Toledo 45007, Spain
[3] Univ Palmas Gran Canaria, Dept Quim, E-35017 Gran Canaria, Spain
来源
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO | 2012年 / 51卷 / 01期
关键词
ZnO varistors; microstructure; spinel; grain growth; ZNO-BASED VARISTORS; ELECTRICAL-PROPERTIES; GRAIN-GROWTH; OXIDE VARISTOR; EVOLUTION; BISMUTH; REGION; PHASES; SB2O3; TIO2;
D O I
10.3989/cyv.092012
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
Typically Titanium oxide is added to the formulation of Bi2O3-doped ZnO based varistors to enhance the growth of ZnO grains, thus allowing their application in low voltage devices. However its incorporation to formulation based on the ZnO-Bi2O3-Sb2O3 (ZBS system), characteristic of high voltage applications has not been analyzed jet. In this contribution it has been verified that far from promoting the ZnO grain growth, the incorporation of TiO2 to varistor formulations based on this ZBS ternary system leads to a better control of the varistor microstructure, which in turns causes an appreciable improvement of its electrical response.
引用
收藏
页码:61 / 66
页数:6
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