$Pr_6O_{11}$계 ZnO 바리스터의 DC 가속열화특성

DC Accelerated Aging Characteristics of $Pr_6O_{11}$ ZnO Varistors

  • 남춘우 (동의대학교 전기공학과) ;
  • 류정선 (동의대학교 전기공학과) ;
  • 김향숙 (동의대학교 전기공학과) ;
  • 정영철 (동의대학교 전기공학과)
  • 발행 : 2001.10.01

초록

The electrical properties and stabiltiy of Pr$_{6}$O$_{11}$ -based ZnO varistors, which are composed of ZnO-Pr$_{6}$O$_{11}$-Cr$_{2}$O$_{3}$-Er$_{2}$O$_{3}$ based ceramics, were investigated in the Er$_{2}$O$_{3}$ content range of 0.5 to 2.0 mol%. As Er$_{2}$O$_{3}$content is increased up to approximaterly 1.0mol%, the nonlinearity was decreased. Increasing Er$_{2}$O$_{3}$ content further caused the nonlinearity to increase. The varistors with 2.0 mol% Er$_{2}$O$_{3}$ exhibited a high nonlinearity, in which the nonlinear exponent is 47.41 and the leakage current is 1.82 $\mu$A. Furthermore, they showed a very excellent stability, in which the variation rates of the varistor voltage, the nonlinear exponent, and leakage current are -0.52%, -4.09%, and 152.75%, respectively, under DC accelerated aging stress, such as (0.80 V$_{1mA}$9$0^{\circ}C$/12h)+(0.85 V$_{1mA}$115$^{\circ}C$/12h)+(0.90 V$_{1mA}$12$0^{\circ}C$/12h)+(0.95 V$_{1mA}$1$25^{\circ}C$/12h)+(0.95 V$_{1mA}$1$25^{\circ}C$/12h).2h).TEX>/12h).2h).

참고문헌

  1. J. Appl. Phys. v.70 The Effect of Liquid-Phase Sintering on the Properties of $Pr_6O_{11}$-Based ZnO Varistors A. B. Alles;V. L. Burdick
  2. J. Amer. Ceram. Soc. v.76 Compositional Effects on the Liquid-Phase Sintering of Praseodymium Oxides-Based Zinc Oxides Varistors A. B. Alles;R. Puskas;G. Callahan;V. L. Burdick
  3. J. Amer. Ceram. Soc. v.79 Micro Structure and Crystal Phases of Praseodymium in Zinc Oxide Varistor Ceramics Y.-S. Lee;K.-S. Liao;T.-Y. Tseng
  4. Mater. Sci. and Engin. v.B79 Mass Transport via Grain Boundary in Pr-based ZnO Varistors and Reiated Electrical Effects S.-Y. Chun;N. Mizutani
  5. Ceram. Bull. v.66 Zinc Oxide Varistors with Praseodymium Oxide K. Mukae
  6. 전기전자재료학회논문지 v.11 no.1 $Y_2O_3$첨가에 따른 ZnO:Pr 바리스터의 미세구조 및 전기적 특성에 관한 연구 남춘우;정순철;이외천
  7. 전기전자재료학회논문지 v.11 no.10 이트리아가 첨가된 프라세오디뮴계 산화아연 바리스터의 안정성에 관한 연구 남춘우;박춘현
  8. 전기전자재료학회논문지 v.13 no.5 $Dy_2O_3$가 첨가된 $Pr_6O_{11}$계 ZnO 바리스터의 전기적 성질 및 안정성 남춘우;윤한수
  9. 전기전자재료학회논문지 v.13 no.9 ZPCCE계 바리스터의 미세구조와 전기적 성질 및 안정성 남춘우;윤한수;류정선
  10. J. Mater. Sci. Lett. v.19 Microstructure and Varistor Properties of ZnO-$Pr_6O_{11}-CoO-Nd_2O_3$ Based Ceramics C.-W. Nahm;C.-H. Park;H.-S. Yoon
  11. J. Mater. Sci. Lett. v.19 Highly Stable Nonohmic Characteristics of $ZnO-Pr6O_{11}-CoO-Dy_2O_3$Based Varistors C.-W. Nahm;C.-H. Park;H.-S. Yoon
  12. J. Mater. Sci. v.35 Microstucture, Electrical Properties, Degradation Behavior of Praseodymium-Based Doped with $Y_2O_3$ C.-W. Nahm;C.-H. Park
  13. J. Eur. Ceram. Soc. v.21 The Electrical Properties and d.c. Degradation Characteristics of $Dy_2O_3$Doped $Pr_6O_{11}$-Based ZnO Varistors C.-W. Nahm
  14. 전기전자재료학회논문지 v.14 no.5 Zn-Pr-Co-Cr-Er 산화물계 바리스터의 전기적 성질 남춘우;류정선
  15. J. Mater. Sci. v.36 Effect of $Er_2O_3$Addition on the Microstructure, Electrical Properties, and Stability of $Pr_6O_{11}$-Based ZnO Ceramic Varistors C.-W. Nahm;C.-H. Park
  16. Mater. Lett. v.47 The Nonlinear Properties and Stability of $ZnO-Pr_6O_{11}-CoO-Cr_2O_3-Er_2O_3$ Ceramic Varistors C.-W. Nahm
  17. J. Mater. Sci. Lett. v.20 The Nonlinear Properties and d.c. Degradation Characteristics of ZPCCE Based Varistors C.-W. Nahm;H.-S. Yoon;J.-S. Ryu
  18. Mater. Lett. Influence of Sintering Temperature on Varistors Characteristics of ZPCCE-Based Ceramics C.-W. Nahm;J.-S. Ryu
  19. J. Appl. Phys. v.77 The Role Played by Ag and Al Dopants in Controlling the Electrical Properties of ZnO Varistors J. Fan;R. Freer
  20. J. Mater. Sci. v.20 A Grain Boundary Defect Model for Instability/Stability of a ZnO Varistor T. K. Gupta;W. G. Carlson