• Title/Summary/Keyword: $ZnO-Pr_{6}O_{11}$ based varistor ceramics

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The Electrical Properties and Salability of ZPCCY-Based Ceramic Varistors wish Sintering Timperature (ZPCCY계 세라믹 바리스터의 소결시간에 따른 전기적 특성 및 안정성)

  • 정영철;류정선;남춘우
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2001.11a
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    • pp.472-475
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    • 2001

  • The electrical properties and stability of ZPCCY-based varistors composing of ZnO-Pr$_{6}$ O$_{11}$ -CoO-Cr$_2$O$_3$-Y$_2$O$_3$ ceramics were investigated with sintering time. As sintering time is increased, the nonlinear exponent decreased in the range of 51.19∼26.70. Among varistors having above 30 in nonlinear exponent, for the varistor sintered for 1h, the nonlinearity was superior to the stability comparatively and, in the case of 2h, the stability was superior to the nonlinearity relatively. Consequently, it is estimated that the varistors sintered for 1∼2h will be applied to various fields by trade-off between nonlinearity and stability.

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