Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Electrical Properties and Clamping Voltage Characteristics of ZPCCY-Based Varistor Ceramics

ZPCCY계 바리스터 세라믹스의 전기적 성질 및 제한전압 특성

  • Nahm Choon-Woo (Department of Electrical Engineering, Dongeui University) ;
  • Park Jong-Ah (Department of Electrical Engineering, Dongeui University)
  • 남춘우 (동의대학교 전기공학과) ;
  • 박종아 (동의대학교 전기공학과)
  • Published : 2005.03.01
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Abstract

The microstructure, electrical properties, and clamping voltage characteristics of $ZnO-Pr_6O_{11}-CoO-Cr_2O_3-Y_2O_3(ZPCCY)-based$ varistor ceramics sintered at $1350^{\circ}C$ were investigated as a function of sintering time from 1 to 3 h. With increasing sintering time, the average grain size and density increased in the range of $11.4\~16.0\;{\mu}m$ and $5.34\~5.54g/cm^3$, respectively, in accordance of increasing sintering time. The nonlinear exponent decreased in the range of $60\~26$ and the leakage current increased in the range of $1.3\~10.7\;{\mu}A$ with increasing sintering time. The clamping voltage ratio increased in the range $1.58\~1.65$ for ratio surge current of 10 A as the sintering time increased.

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References

  1. L. M. Levinson and H. R. Philipp, Amer. Ceram. Soc. Bull., 65, 639 (1986)
  2. T. K. Gupta, J. Amer. Ceram. Soc., 73, 1817 (1990) https://doi.org/10.1111/j.1151-2916.1990.tb05232.x
  3. D. R. Clarke, J. Amer. Ceram. Soc., 82, 485 (1999) https://doi.org/10.1111/j.1151-2916.1999.tb01793.x
  4. A. B. Alles and L. Burdick, J. Appl. Phys., 70, 6883 (1991) https://doi.org/10.1063/1.349812
  5. Y. S. Lee and T. Y. Tseng, J. Amer. Ceram. Soc., 75, 1636 (1992) https://doi.org/10.1111/j.1151-2916.1992.tb04236.x
  6. A. B. Alles, R. Puskas, G. Callahan and V. L. Burdick, J. Amer. Ceram. Soc., 76, 2098 (1993) https://doi.org/10.1111/j.1151-2916.1993.tb08339.x
  7. Y. S. Lee, K. S. Liao and T. Y. Tseng, J. Amer. Ceram. Soc., 79, 2379 (1996) https://doi.org/10.1111/j.1151-2916.1996.tb08986.x
  8. C. W. Nahm and C. H. Park, J. Mater. Sci., 35, 3037 (2000) https://doi.org/10.1023/A:1004749214640
  9. H. H. Hng and K. M. Knowles, J. Mater. Sci., 37, 1143 (2002) https://doi.org/10.1023/A:1014359204034
  10. C. W. Nahm and H. S. Kim, J, KlEEME, 15, 946 (2002) https://doi.org/10.4313/JKEM.2002.15.11.946
  11. C. W. Nahm, Mater. Lett., 57, 1317 (2003) https://doi.org/10.1016/S0167-577X(02)00979-5
  12. C. W. Nahm and B. C. Shin, Mater. Lett., 57, 1322 (2003) https://doi.org/10.1016/S0167-577X(02)00980-1
  13. C. W. Nahm, J. A. Park, M. J. Kim and J. S. Ryu, J. Kor. Ceram. Soc., 40, 897 (2003) https://doi.org/10.4191/KCERS.2003.40.9.897
  14. C. W. Nahm, J. A. Park, M. J. Kim and J. S. Ryu, J. Kor. Ceram. Soc., 40, 1067 (2003) https://doi.org/10.4191/KCERS.2003.40.11.1067
  15. C. W. Nahm, J. A. Park and M. J. Kim, Mater. Sic., 39, 307 (2004) https://doi.org/10.1023/B:JMSC.0000007762.89222.ec
  16. C. W. Nahm and J. A. Park, J. Kor. Ceram. Soc., 41, 464 (2004) https://doi.org/10.4191/KCERS.2004.41.6.464
  17. J. C. Wurst and J. A. Nelson, J. Amer. Ceram. Soc., 97, 109 (1972) https://doi.org/10.1111/j.1151-2916.1972.tb11224.x
  18. J. H. Kim, T. Kimura and T. Yamacuchi, J. Mater. Sci., 24, 25816 (1989)
  19. K. Eda, J. Appl. Phys., 49, 2964 (1978) https://doi.org/10.1063/1.325139