Effect of Sintering Temperature on the Microstructure and Electrical Properties of SnO2-Based Varistors

被引：0

作者：

Hu, Guangliang ^{[1
]}

Zhu, Jianfeng ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Key Lab Auxiliary Chem & Technol Chem Ind, Minist Educ, Xian 710021, Shaanxi, Peoples R China

来源：

ECO-MATERIALS PROCESSING AND DESIGN XIII | 2012年 / 724卷

关键词：

SnO2; varistors; microstructure; electrical properties; SNO2 BASED VARISTOR;

D O I：

10.4028/www.scientific.net/MSF.724.323

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

SnO2-based varistors were successfully fabricated from the mixed powders, SnO2, Co2O3, Nb2O5 and Cr2O3. The effects of sintering temperature (1250, 1300, 1350 and 1400 degrees C) on the microstructure and electrical properties were investigated. The results reveal that the grain size increases with increasing the sintering temperature, and the breakdown electrical filed decreases gradually. When the sintering temperature was 1300 degrees C, the nonlinear coefficient of the as fabricated SnO2 based varistors presents the maximum of 27. Meanwhile, the leakage current possesses the minimum of 4.5 mu A.

引用

页码：323 / 326

页数：4

共 12 条

[1] SnO2, ZnO and related polycrystalline compound semiconductors:: An overview and review on the voltage-dependent resistance (non-ohmic) feature [J].

Bueno, Paulo R. ;

Varela, Jose A. ;

Longo, Elson .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2008, 28 (03) :505-529

[2] Characterization of SnO2-varistors with different additives [J].

Castro, MS ;

Aldao, CM .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1998, 18 (14) :2233-2239

[3] Electrical conduction in SnO2 varistors [J].

Glot, A. B. ;

Gaponov, A. V. ;

Sandoval-Garcia, A. P. .

PHYSICA B-CONDENSED MATTER, 2010, 405 (02) :705-711

[4] The influence of sintering process and atmosphere on the non-ohmic properties of SnO2 based varistor [J].

Leite, ER ;

Nascimento, AM ;

Bueno, PR ;

Longo, E ;

Varela, JA .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 1999, 10 (04) :321-327

[5] Sensitivity of SnO2 non-ohmic behavior to the sintering process and to the addition of La2O3 [J].

Oliveira, MM ;

Bueno, PR ;

Cassia-Santos, MR ;

Longo, E ;

Varela, JA .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2001, 21 (09) :1179-1185

[6]

PIANARO SA, 1995, J MATER SCI LETT, V14, P692, DOI 10.1007/BF00253373

[7] Microstructure and electric properties of a SnO2 based varistor [J].

Pianaro, SA ;

Bueno, PR ;

Longo, E ;

Varela, JA .

CERAMICS INTERNATIONAL, 1999, 25 (01) :1-6

[8]

Rairez M.A., 2009, J MATER SCI-MATER EL, V20, P49

[9]

Stantos M.R.C., 2005, MATER CHEM PHYS, V90, P1

[10]

Stantos M.R.C., 2001, J EUR CERAM SOC, V21, P161

← 1 2 →