Effect Of sintering temperature on microstructure and electrical properties of ZnO-0.5 mol%V2O5-0.5 mol%Cr2O3 varistors

被引：9
作者：
Kharchouche, Faical [1 ]
机构：
[1] Univ Setif I, Dept Electrotech, Fac Technol, Setif 19000, Algeria
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2018年 / 29卷 / 05期
关键词：
ZNO VARISTOR; DEGRADATION; BEHAVIOR; IMPROVEMENT; CERAMICS;
D O I：
10.1007/s10854-017-8327-y
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The sintering effect on the microstructure, electrical properties, and dielectric characteristics of ZnO-V2O3-Cr2O3-based ceramics was investigated. With the increase of sintering temperature from 950 to 1250 A degrees C, the density of the sintered pellets decreased from 98.2 to 97.5% and the average grain size increased from 15.95 to 24.65 mu m. The breakdown field decreased noticeably from 127.5 to 67 V/cm with the increase of sintering temperature. The varistor ceramics sintered at 1050 A degrees C exhibited the best nonlinear properties: 11.6 in the nonlinear coefficient. The dielectric constant in frquence 10 kHz increased sharply from 1862 to 2790 with the increase of sintering temperature. On the whole, the dielectric loss exhibited a fluctuation with the increase of the sintering temperature, and a minimum value of 0.0098 at 950 A degrees C.
引用
收藏
页码：3891 / 3897
页数：7
相关论文
共 43 条
[1]   Microstructure and electrical properties of Sm2O3 doped Bi2O3-based ZnO varistor ceramics [J].
Ashraf, M. A. ;
Bhuiyan, A. H. ;
Hakim, M. A. ;
Hossain, M. T. .
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2011, 176 (11) :855-860
[2]   Microstructure and electrical properties of Ho2O3 doped Bi2O3-based ZnO varistor ceramics [J].
Ashraf, M. A. ;
Bhuiyan, A. H. ;
Hakim, M. A. ;
Hossain, M. T. .
PHYSICA B-CONDENSED MATTER, 2010, 405 (17) :3770-3774
[3]  
Chen G.-H., J MAT SCI MAT ELECT, V24, P3675
[4]   Microstructure and electrical properties of Dy2O3-doped ZnO-Bi2O3 based varistor ceramics [J].
Chen, Guo-hua ;
Li, Ji-le ;
Yang, Yun ;
Yuan, Chang-lai ;
Zhou, Chang-rong .
MATERIALS RESEARCH BULLETIN, 2014, 50 :141-147
[5]   Soft core behavior in ZnO-Bi2O3-based varistors containing oxides of Ce and Gd [J].
Cheng, Pengfei ;
Li, Shengtao ;
Alim, Mohammad A. .
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2007, 204 (03) :887-899
[6]   Low voltage varistors based on CeO2 [J].
Deshpande, VV ;
Patil, MM ;
Ravi, V .
CERAMICS INTERNATIONAL, 2006, 32 (01) :85-87
[7]  
Dong X.U., 2012, T NONFERR METAL SOC, V22, ps110
[8]   Nonlinear electrical behaviour of the Cr2O3, ZnO, CoO and Ta2O5-doped SnO2 varistors [J].
Filho, FM ;
Simoes, AZ ;
Ries, A ;
Perazolli, L ;
Longo, E ;
Varela, JA .
CERAMICS INTERNATIONAL, 2006, 32 (03) :283-289
[9]   Non-Ohmic conduction in tin dioxide based varistor ceramics [J].
Glot, A. B. ;
Skuratovsky, I. A. .
MATERIALS CHEMISTRY AND PHYSICS, 2006, 99 (2-3) :487-493
[10]   Electrical properties of SnO2 ceramics for low voltage varistors [J].
Glot, A. B. ;
Bulpett, R. ;
Ivon, A. I. ;
Gallegos-Acevedo, P. M. .
PHYSICA B-CONDENSED MATTER, 2015, 457 :108-112
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