한국재료학회지 (Korean Journal of Materials Research)

  • 제16권8호
  • /
  • Pages.466-472
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  • 2006
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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소결온도가 ZPCCL계 바리스터의 전기적, 유전적 안정성에 미치는 영향

Sintering Temperature Effect on Electrical and Dielectric Stability of ZPCCL-Based Varistors

  • 남춘우 (동의대학교 전기공학과)
  • Nahm, Choon-Woo (Department of Electrical Engineering, Dongeui University)
  • 발행 : 2006.08.27
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초록

The electrical, dielectric properties, and its stability of ZPCCL-based varistors were investigated for different sintering temperatures in the range of $1230{\sim}1300^{\circ}C$. As the sintering temperatures increased, the varistor voltage decreased in the range of $777.9{\sim}108$ V/mm, the nonlinear coefficient decreased in the range of $77.9{\sim}7.1$, and the leakage current increased in the range of $0.3{\sim}50.6\;{\mu}A$. The stability of electrical and dielectric characteristics was obtained from sintering temperature of $1260^{\circ}C$. the varistors sintered at $1260^{\circ}C$ marked the high electrical and dielectric stability, with $%{\Delta}{V_{1mA}=+1.9%,\;%{\Delta}{\alpha}=-10.6%,\;%{\Delta}I_L=+20%\;and\;%{\Delta}tan\;{\delta}=+9.9%$ for DC accelerated aging stress state of $0.95V_{1mA}/150^{\circ}C$/24 h.

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