Improvement in the non-linear electrical characteristics of the SnO2 • Co2O3 • Ta2O5 varistor material with Pr6O11 additive

被引：6
|
作者：
Zhang, Jiaqi [1 ,2 ]
Bian, Liang [1 ]
Ren, Wei [1 ]
Wang, Lei [1 ]
Xu, Jinbao [1 ]
机构：
[1] Xinjiang Tech Inst Phys & Chem CAS, Xinjiang Key Lab Elect Informat Mat & Devices, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
[2] Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 08期
基金：
中国科学院西部之光基金;
关键词：
SnO2; Pr6O11; Varistors; Electrical properties; SNO2-BASED VARISTOR; MICROSTRUCTURE; CONDUCTIVITY; SYSTEM; FILMS;
D O I：
10.1016/j.ceramint.2015.03.315
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 electrical and microstructural properties of SnO2-based varistor ceramic sample were improved by addition of Pr6O11. It was found that the introduction of Pr6O11 can lead to a great improvement in the threshold voltage and the non-linear electrical properties of SnO2-based varistors. As the amount of Pr6O11 increased from 0.00 to 0.5 mol%, the mean grain size decreases from 16.64 to 7.58 mu m, the relative dielectric constant (at 1 kHz) increases from 1243.2 to 4534.6, the non-linear coefficient increases from 15.44 to 18.25 and the break down electrical field increases from 275.3 to 880.5 V/mm. The structure-property relationship is discussed systematically. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：9399 / 9402
页数：4
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