DOI QR코드

DOI QR Code

Effect of Sintering Temperature on Electrical and Dielectric Behavior of Pr6O1-Based ZnO Varistors with DC Accelerated Aging Stress

Pr6O1계 ZnO 바리스터의 DC 가속열화 스트레스에 따른 전기적, 유전적 거동에 미치는 소결온도의 영향

  • 남춘우 (동의대학교 전기공학과) ;
  • 정영철 (동의대학교 전기공학과) ;
  • 김향숙 (동의대학교 전기공학과)
  • Published : 2002.03.01

Abstract

The electrical and dielectric behavior fort DC accelerated aging stress of P $r_{6}$ $O_{11}$-based Zno varistors cnsisting of ZnO-P $r_{6}$ $O_{11}$-CoO-C $r_2$ $O_3$-E $r_2$ $O_3$ were investigated with sintering temperature in the range of 1325~1345$^{\circ}C$. The varistor ceramics with increasing sintering temperature were more densified. A more densified varistors leaded to high stability for DC accelerated aging stress. Furthermore, the stability for DC accelerated aging stress was increased with the leakage current and dtan $\delta$/dV decreasing in order of 1325longrightarrow1335longrightarrow1345longrightarrow134$0^{\circ}C$ in sintering temperature. It was found that the stability for DC stress is affected more greatly by the leakage current and dtan $\delta$/dV than the densification. It is considered that the stability of varistors for DC stress can be estimated by considering the factors, such as the densification, leakage current, and dtan $\delta$/dV. As a result, the varistor sintered at 134$0^{\circ}C$ exhibited the highest stability, with %$\Delta$ $V_{lmA}$=-1.54%, %$\Delta$$\alpha$=-2.49%, %$\Delta$ $I_{\ell}$=+240.68%, 5%$\Delta$tan$\delta$=+29.96%.96%.96%.%.

References

  1. 電子セラミクス 一ノ瀨昇
  2. 半導분 セラミクスと その應用 ニュ-ケラスシ-リズ 編集委員會
  3. 電氣學會技術報告 no.474 酸化亞鉛避雷器の特性と評價試驗法 電氣學會
  4. Ceram. Bull. v.66 no.9 Zinc oxide varistors with praseodymium oxide K. Mukae
  5. J. Appl. Phys. v.70 no.11 The effect of liquid-phase sintering on the properties of Pr6O11-based ZnO varistors A. B. Alles;V. L. Burdick https://doi.org/10.1063/1.349812
  6. J. Amer. Ceram. Soc. v.76 no.8 Compositional effects on the liquid-phase sintering of praseodymium oxides-based zinc oxides varistors A. B. Alles;R. Puskas;G. Callahan;V. L. Burdick https://doi.org/10.1111/j.1151-2916.1993.tb08339.x
  7. J. Amer. Ceram. Soc. v.79 no.9 Micro structure and crystal phases of praseodymium in zinc oxide varistor ceramics Y.-S. Lee;K.-S. Liao;T-Y. Tseng https://doi.org/10.1111/j.1151-2916.1996.tb08986.x
  8. Mater. Sci., and Engin. v.B79 no.1 Mass transport via grain boundary in Pr-based ZnO varistors and reiated electrical effects S.-Y. Chun;N. Mizutani
  9. J. Mater. Sci. Lett. v.19 no.4 Microstructure and varistor properties of ZnO-Pr6O11-CoO-Nd2O3 based ceramics C.-W. Nahm;C.-H. Park;H.-S. Yoon https://doi.org/10.1023/A:1006781823837
  10. 전기전자재료학회논문지 v.11 no.1 Y₂O₃ 첨가에 따른 ZnO:Pr 바리스터의 미세구조 및 전기적 특성에 관한 연구 남춘우;정순철;이외천
  11. 전기전자재료학회논문지 v.11 no.10 이트리아가 첨가된 프라세오디뮴계 산화아연 바리스터의 안정성에 관한 연구 남춘우;박춘현
  12. 전기전자재료학회논문지 v.13 no.8 ZnO-Pr6O11-CoO-Er2O3계 바리스터의 안정성에 관한 연구 남춘우
  13. 전기전자재료학회논문지 v.13 no.9 ZPCCE계 바리스터의 미세구조와 전기적 성질 및 안정성 남춘우;윤한수;류정선
  14. J. Mater. Sci. Lett. v.19 no.9 Highly stable nonohmic characteristics of ZnO-Pr6O11-CoO-Dy2O3 based varistors C.-W. Nahm;C.-H. Park;H.-S. Yoon https://doi.org/10.1023/A:1006739421559
  15. J. Mater. Sci. v.35 no.12 Microstucture, electrical properties, degradation behavior of praseodymium oxides-based zinc oxide varistors doped with Y₂O₃ C.-W. Nahm;C.-H. Park https://doi.org/10.1023/A:1004749214640
  16. Mater. Lett. v.47 no.3 The nonlinear properties and stability of ZnO-Pr6O11-CoO-Cr2O3-Er2O3 ceramic varistors C.-W. Nahm https://doi.org/10.1016/S0167-577X(00)00262-7
  17. J. Eur. Ceram. Soc. v.21 no.4 The electrical properties and d.c. degradation characteristics of Dy₂O₃ doped Pr6O11-based ZnO varistors C.-W. Nahm https://doi.org/10.1016/S0955-2219(00)00233-8
  18. J. Mater. Sci. Lett. v.20 no.5 The nonlinear properties and d.c. degradation characteristics of ZPCCE based varistors C.-W. Nahm;H.-S. Yoon;J.-S. Ryu https://doi.org/10.1023/A:1010969506901
  19. J. Mater. Sci. v.36 no.7 Effect of Er₂O₃ addition on the microstructure, electrical properties, and stability of Pr6O11 -based ZnO ceramic varistors C.-W. Nahm;C.-H. Park https://doi.org/10.1023/A:1017552020433