Precurrent and dielectric breakdown in titania ceramics - Critical current

T. Arakawa, A. Kishimoto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Dielectric breakdown of titania ceramics was investigated with respect to the precurrent which is the current flow before breakdown. The precurrent behavior can be divided into two regions; an electron multiplication region in which carrier electron increases with a constant rate and a critical current increase just before the breakdown. Optical microscopic observation indicated that a part of titania ceramics melted during dielectric breakdown. Relation between critical current and applied electric field, as well as the electric power and heat calculated from the critical current, supported the observed melt of titania ceramics.

Original languageEnglish
Pages (from-to)891-893
Number of pages3
JournalJournal of the Ceramic Society of Japan
Volume109
Issue number1274
DOIs
Publication statusPublished - Oct 2001
Externally publishedYes

Keywords

  • Dielectric breakdown
  • Melt
  • Precurrent
  • Titania ceramics

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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