• Title/Summary/Keyword: Ceramic microstructure

Search Result 1,359, Processing Time 0.025 seconds

Characteristics of ZnO Varistors with Praseodymium Oxide

  • Lee, Sang-Ki;Cho, Sung-Gurl;Shim, Young-Jae
    • The Korean Journal of Ceramics
    • /
    • v.5 no.4
    • /
    • pp.357-362
    • /
    • 1999
  • ZnO varistors containing cobalt, praseodymium and calcium oxides were prepared. The current-voltage charcteristics and microstructures of the specimens were investigated with respect to calcium addition and sintering temperature. The potential barrier heights and the carrier densities were estimated from C-V relations. The compatibility of Ag-Pd as an internal electrode for multilayer chip varistor was also examined.

  • PDF