Two-step method fabricating high nonlinearity ZnVSb based varistors

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

Research output: Contribution to journalArticlepeer-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 (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.

Original languageEnglish
Pages (from-to)1425-1429
Number of pages5
JournalCeramics International
Volume34
Issue number6
DOIs
StatePublished - Aug 2008

Keywords

  • Ceramic
  • D. ZnO
  • E. Varistors
  • Precursor

Fingerprint

Dive into the research topics of 'Two-step method fabricating high nonlinearity ZnVSb based varistors'. Together they form a unique fingerprint.

Cite this