The effects of MnO2 on the microstructure and electrical properties based on ZnO-Bi2O3-Sb2O3-Cr2O3-Co2O3 varistors

被引:1
作者
Huang, Xiaolong [1 ]
Li, Jiaqi [1 ]
Pan, Guangxu [2 ]
Zhu, Dachuan [1 ]
机构
[1] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610065, Peoples R China
[2] Civil Aviat Elect Technol Co Ltd, Chengdu 611430, Peoples R China
关键词
Electrical properties; Grain size; Microstructure; ZnO varistor; MnO2; GRAIN-SIZE; ZNO; TEMPERATURE;
D O I
10.1007/s10832-024-00360-2
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 this work, nano ZnO powders, Bi2O3, Sb2O3, Cr2O3, Co2O3 and a various content of MnO2 were blended thoroughly and pre-calcined at 800degree celsius and then pressed in to pellets which were sintered at 950degree celsius to form varistor ceramics. Subsequently, the effects of MnO2 on the microstructure and electrical properties of the ZnO-based varistor were investigated. It was found that the amount of spinel phase (Zn7Sb2O12) and Bi2O3 phase increased with the MnO2 increasing, while the content of pyrochlore (Zn2Bi3Sb3O14) phase decreased. As a result, the growth of ZnO grain was reduced with the average grain size from 9.5 mu m down to 5.3 mu m, leading to the increase of breakdown field of ZnO-based varistor. Particularly, the ZnO-based varistor with 1.2 mol% MnO2 exhibited the best comprehensive electrical performance with the breakdown field E-b of 901.4 V/mm, the nonlinear coefficient alpha of 66.7 and the leakage current density J(L) of 1.1 mu A/cm(2).
引用
收藏
页码:261 / 270
页数:10
相关论文
共 32 条
[1]   Influence of Cr2O3 on highly nonlinear properties and low leakage current of ZnO-Bi2O3 varistor ceramics [J].
Bai, Hairui ;
Li, Shuhui ;
Zhao, Yunhan ;
Xu, Zhijun ;
Chu, Ruiqing ;
Hao, Jigong ;
Chen, Chong ;
Li, Huaiyong ;
Gong, Yunyun ;
Li, Guorong .
CERAMICS INTERNATIONAL, 2016, 42 (09) :10547-10550
[2]   AN ELECTROCONDUCTOMETRIC INVESTIGATION OF MN3O4 AND THE MN3O4 REVERSIBLE MN2O3 TRANSFORMATION [J].
BARBARIOL, I ;
ROITTI, S .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1984, 3 (02) :181-183
[3]   Effect of Pr6O11 doping on the microstructure and electrical properties of ZnO varistors [J].
Cao, Wenbin ;
Xie, Xin ;
Wang, Youqing ;
Chen, Minge ;
Qiao, Yinan ;
Wang, Pan ;
Zhang, Yunxia ;
Liu, Jianke .
CERAMICS INTERNATIONAL, 2019, 45 (18) :24777-24783
[4]   Effect of powder characteristics on electrical properties of (Ba,Bi,Nb)-added TiO2 ceramics [J].
Cheng, JJ ;
Wu, JM .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1996, 35 (9A) :4704-4710
[5]   Effect of chromium on the phase evolution and microstructure of ZnO doped with bismuth and antimony [J].
Cho, SG ;
Lee, H ;
Kim, HS .
JOURNAL OF MATERIALS SCIENCE, 1997, 32 (16) :4283-4287
[6]  
Clarke D. R., 1999, Journal of the American Ceramic Society, V82, P485, DOI 10.1111/j.1151-2916.1999.tb01793.x
[7]   Shock-sintering of low-voltage ZnO-based varistor ceramics with Bi4Ti3O12 additions [J].
Daneu, Nina ;
Gramc, Nives Novak ;
Recnik, Aleksander ;
Krzmanc, Marjeta Macek ;
Bernik, Slavko .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2013, 33 (02) :335-344
[8]   APPLICATION OF ZINC-OXIDE VARISTORS [J].
GUPTA, TK .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (07) :1817-1840
[9]   Deep donors in polycrystalline Mn-doped ZnO [J].
Han, JP ;
Senos, AMR ;
Mantas, PQ .
MATERIALS CHEMISTRY AND PHYSICS, 2002, 75 (1-3) :117-120
[10]   The electrical properties of Mn3O4-doped ZnO [J].
Hong, YW ;
Kim, JH .
CERAMICS INTERNATIONAL, 2004, 30 (07) :1301-1306