Analysis of ZnO varistors prepared by the sol-gel method

Sheng Yuan Chu, Tser Min Yan, Shen Li Chen

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)


A new sol-gel processing method to prepare ZnO-based varistor powders, using inexpensive zinc acetate dihydrate, ethylene glycol, n-propyl alcohol and glycerol as starting materials, is presented. Compared to conventional oxide-mixing techniques, this method yields powders with a more homogeneous distribution of dopants; the sintering temperature could be lowered by about 200 K to 1000 °C and the grain size is much smaller which proves very helpful for achieving high breakdown strength. Microstructure and electrical characteristics of the sintered powders were investigated.

Original languageEnglish
Pages (from-to)733-737
Number of pages5
JournalCeramics International
Issue number7
Publication statusPublished - 2000 Aug 3

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry


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