Two-step method fabricating high nonlinearity ZnVSb based varistors

Ming Zhao; Xiang Chun Liu; Wei Min Wang; Feng Gao; Chang Sheng Tian

doi:10.1016/j.ceramint.2007.03.027

Two-step method fabricating high nonlinearity ZnVSb based varistors

Ming Zhao, Xiang Chun Liu, Wei Min Wang, Feng Gao, Chang Sheng Tian

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A two-step method was introduced to fabricate ZnO-V₂O₅-Sb₂O₃ (ZnVSb) based varistor at low temperatures, such as 900-950 °C. Sb₂O₃/V₂O₅ (V/Sb) precursor was first synthesized and then used to replace Sb₂O₃ as one of the main dopants. The effect of its concentration on the microstructure and electrical properties of the ZnVSb based ceramic was investigated at doping levels up to 1.5 mol%. The microstructural homogeneity of the ceramic was greatly improved by the addition of the precursor. With increasing V/Sb precursor, the average grain size decreased, while the nonlinearity of the as sintered ceramic was enhanced (α_Max = 89). The ZnVSb ceramic is a promising material in the fabrication of multi-layered varistor, in which it could be co-sintered with pure Ag inner electrode.

Original language	English
Pages (from-to)	1425-1429
Number of pages	5
Journal	Ceramics International
Volume	34
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2007.03.027
State	Published - Aug 2008

Keywords

Ceramic
D. ZnO
E. Varistors
Precursor

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10.1016/j.ceramint.2007.03.027

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title = "Two-step method fabricating high nonlinearity ZnVSb based varistors",

abstract = "A two-step method was introduced to fabricate ZnO-V2O5-Sb2O3 (ZnVSb) based varistor at low temperatures, such as 900-950 °C. Sb2O3/V2O5 (V/Sb) precursor was first synthesized and then used to replace Sb2O3 as one of the main dopants. The effect of its concentration on the microstructure and electrical properties of the ZnVSb based ceramic was investigated at doping levels up to 1.5 mol%. The microstructural homogeneity of the ceramic was greatly improved by the addition of the precursor. With increasing V/Sb precursor, the average grain size decreased, while the nonlinearity of the as sintered ceramic was enhanced (αMax = 89). The ZnVSb ceramic is a promising material in the fabrication of multi-layered varistor, in which it could be co-sintered with pure Ag inner electrode.",

keywords = "Ceramic, D. ZnO, E. Varistors, Precursor",

author = "Ming Zhao and Liu, {Xiang Chun} and Wang, {Wei Min} and Feng Gao and Tian, {Chang Sheng}",

year = "2008",

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AU - Zhao, Ming

AU - Liu, Xiang Chun

AU - Wang, Wei Min

AU - Gao, Feng

AU - Tian, Chang Sheng

PY - 2008/8

Y1 - 2008/8

N2 - A two-step method was introduced to fabricate ZnO-V2O5-Sb2O3 (ZnVSb) based varistor at low temperatures, such as 900-950 °C. Sb2O3/V2O5 (V/Sb) precursor was first synthesized and then used to replace Sb2O3 as one of the main dopants. The effect of its concentration on the microstructure and electrical properties of the ZnVSb based ceramic was investigated at doping levels up to 1.5 mol%. The microstructural homogeneity of the ceramic was greatly improved by the addition of the precursor. With increasing V/Sb precursor, the average grain size decreased, while the nonlinearity of the as sintered ceramic was enhanced (αMax = 89). The ZnVSb ceramic is a promising material in the fabrication of multi-layered varistor, in which it could be co-sintered with pure Ag inner electrode.

AB - A two-step method was introduced to fabricate ZnO-V2O5-Sb2O3 (ZnVSb) based varistor at low temperatures, such as 900-950 °C. Sb2O3/V2O5 (V/Sb) precursor was first synthesized and then used to replace Sb2O3 as one of the main dopants. The effect of its concentration on the microstructure and electrical properties of the ZnVSb based ceramic was investigated at doping levels up to 1.5 mol%. The microstructural homogeneity of the ceramic was greatly improved by the addition of the precursor. With increasing V/Sb precursor, the average grain size decreased, while the nonlinearity of the as sintered ceramic was enhanced (αMax = 89). The ZnVSb ceramic is a promising material in the fabrication of multi-layered varistor, in which it could be co-sintered with pure Ag inner electrode.

KW - Ceramic

KW - D. ZnO

KW - E. Varistors

KW - Precursor

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DO - 10.1016/j.ceramint.2007.03.027

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VL - 34

SP - 1425

EP - 1429

JO - Ceramics International

JF - Ceramics International

IS - 6

ER -

Two-step method fabricating high nonlinearity ZnVSb based varistors

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Keywords

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