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Journal of Materials Science

, Volume 30, Issue 20, pp 5161–5165 | Cite as

Electrical characteristics and pulse degradation of ZnO varistors with Nb2O5 dopant

  • Hui -Feng Li
  • Yu -Chun Xu
  • Shi -Liang Wang
  • Li -Qiong Wang
Article
  • 32 Downloads

Abstract

The influence of Nb2O5 doping and pre-sintering of Nb2O5 with ZnO on electrical and pulse degradation characteristics of ZnO varistors has been investigated. Doping with a small amount of Nb2O5 worsened the electrical and pulse degradation characteristics. However, with 0.05–0.1 mol% Nb2O5, the electrical and pulse degradation characteristics were greatly improved, but further doping with Nb2O5 had little influence. Pre-sintering of Nb2O5 with ZnO at 1000–1100 °C greatly improved the electrical and pulse degradation characteristics.

Keywords

Polymer Material Processing Nb2O5 Electrical Characteristic Degradation Characteristic 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • Hui -Feng Li
    • 1
  • Yu -Chun Xu
    • 1
  • Shi -Liang Wang
    • 1
  • Li -Qiong Wang
    • 1
  1. 1.Solid State Electronics DepartmentHuazhong University of Science and TechnologyWuhan, HubeiPeople’s Republic of China

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