Abstract
The ZnO voltage limiter or varistor1 has an outstanding nonlinear current-voltage (I-V) characteristic and, as such, is used extensively to suppress the transient voltage surges encountered in the lightning and switching surges.2 The advancement in the state-of-the-art of the varistor in recent years3−9 makes it impossible to describe all the elements of this development within the scope of this paper. The objective of this paper is to concentrate on the microstructure and chemistry of the ZnO varistor and their effects on electrical properties. However, in order to appreciate this correlation, it is first necessary to briefly describe the current- voltage (I-V) characteristics of the varistor.
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References
M. Matsuoka, “Non-ohmic Properties of Zinc Oxide Ceramics,” Jap. J. Appl. Phys., 10, pp. 736–746 (1971).
A. Sweetana, T. K. Gupta, W. G. Carlson, R. Grekila, N. Kunkle, and J. Osterhout, “Gapless Surge Arrestors for Power Systems Applications,” EPRI, EL-3166, Vol. 1, Final Report, September 1983.
W. G. Morris, “Electrical Properties of ZnO-Bi2O3 Ceramics,” J. Am. Ceram. Soc., 56, pp. 360–364 (1973).
L. M. Levinson and H. R. Philipp, “The Physics of Metal Oxide Varistors,” J. Appl. Phys., 46, pp. 1332–1341 (1975).
P. R. Emtage, “The Physics of Zinc Oxide Varistors,” J. Appl. Phys., 48, pp. 4372–4384 (1977).
K. Eda, “Conduction Mechanism of Non-ohmic Zinc Oxide Ceramics,” J. Appl. Phys., 49, pp. 2964–2972 (1978).
P. L. Hower and T. K. Gupta, “A Barrier Model for ZnO Varistors,” J. Appl. Phys., 50, pp. 4847–4855 (1979).
G. D. Mahan, L. M. Levinson, and H. R. Philipp, “Theory of Conduction in ZnO Varistors,” J. Appl. Phys., 50, pp. 2799–2812 (1979).
R. Einzinger, “Metal Oxide Varistor Action—A Homojunction Breakdown Mechanism,” App. Surf. Sci., 1 pp. 329–341 (1978).
W. G. Carlson and T. K. Gupta, “Improved Varistor Nonlinearity via Donor Impurity Doping,” J. Appl. Phys., 53, pp. 5746–5753 (1982).
M. Matsuoka, T. Masuyama, and Y. Iida, “Voltage Nonlinearity of Zinc Oxide Ceramics Doped with Alkali Earth Metal Oxide,” Jap. J. Appl. Phys., 8 p. 1275 (1969).
D. R. Clarke, “The Microstructural Location of the Intergranular Metal Oxide Phase in a Zinc Oxide Varistor,” J. Appl. Phys., 49, p. 2407 (1978).
A. T. Santhanam, T. K. Gupta, and W. G. Carlson, “Microstruetural Evaluation of Multicomponent ZnO Ceramics,” J. Appl. Phys., 50 (2), pp. 852–859 (1979).
W. G. Morris, “Physical Properties of the Electrical Barriers in Varistors,” J. Vac. Sci. Technol., 13 (4), p. 926 (1976).
J. Wong, “Nature of Intergranular Phase in Non-ohmic ZnO Ceramics Containing 0.5 Mol.% Bi2O3,” J. Am. Ceram. Soc., 57, pp. 357–359
J. Wong, P. Rao, and E. F. Koch, “Nature of an Intergranular Thin-Film Phase in a Highly Non-ohmic Metal Oxide Varistor,” J. Appl. Phys., 46 (4), p. 1827 (1975).
M. Inada, “Crystal Phases of Non-ohmic Zinc Oxide Ceramics,” Jap. J. Appl. Phys., 17 (1), pp. 1–10 (1978).
M. Inada, “Microstrueture of Non-ohmic Zinc Oxide Ceramics,” Jap. J. Appl. Phys., 17 (4), pp. 673–677 (1978).
W. D. Kingery, J. B. Van der Sande, and T. Mitamura, “A Scanning Transmission Electron Microscopy Investigation of Grain Boundary Segregation in a Zn0-Bi2O3 Varistor,” J. Am. Ceram. Soc., 62 (3–4), p. 221 (1979).
J. Wong, “Microstrueture and Phase Transformation in a Highly Non-ohmic Metal Oxide Varistor Ceramic,” J. Appl. Phys., 46 (4), pp. 1653–1659 (1975).
P. Williams, O. L. Krivanek, and G. Thomas, “Microstrueture-Property Relationship of Rare Earth Zinc Oxide Varistors,” J. Appl. Phys., 51 (7), p. 3930 (1980).
M. Inada, Formation of Non-ohmic Zinc Oxide Ceramics,” Jap. J. Appl. Phys., 19 (3), pp. 409–419 (1980).
J. Wong, “Sintering and Varistor Characteristics of Zn0-Bi2O3 Ceramics,” J. Appl. Phys., 51 (8), p. 4453 (1980).
J. Wong and W. G. Morris, “Microstructure and Phases in Non-ohmic ZnO-Bi2O3 Ceramics,” Ceram. Bull., 53, p. 816 (1974).
D. R. Clarke, “Grain Boundary Segregation in a Commercial ZnO-Based Varistor,” J. Appl. Phys., 50 (11), p. 6829 (1979).
T. K. Gupta and W. G. Carlson, “A Grain Boundary Defect Model for Instability/Stability of ZnO Varistor,” to be published in J. Mat. Sci.
T. K. Gupta and W. G. Carlson, “Barrier Voltage and Its Effect on Stability of ZnO Varistor,” J. Appl. Phys., 53 (11), pp. 7401–7409 (1982).
T. K. Gupta, “60 Hz AC Characteristic of ZnO Varistor Below Breakdown Voltage,” 1984 Conference on Electrical Insl. and Dielectric Phenomena, IEEE Elec. Insl. Soc., October 21–25, pp. 437–447 (1984).
G. Heiland and E. Mollwo, in Solid State Physics, Vol. 8, Ed. by F. Seitz and D. Turnbull, Academic Press, New York, p. 215.
R. A. Swalin, in Thermodynamics of Solids, Wiley, New York, 1962, Chapter 15.
T. Miyoshi, K. Maeda, K. Takahashi, and T. Yamazaki, “Effects of Dopants on Characteristics of ZnO Varistors,” in Advances in Ceramics, Vol. 1, Ed. by L. M. Levinson and D. Hill, Am. Ceram. Soc., 1981, p. 309.
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© 1986 Plenum Press, New York
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Gupta, T.K. (1986). Influence of Microstructure and Chemistry on the Electrical Characteristic of ZnO Varistors. In: Tressler, R.E., Messing, G.L., Pantano, C.G., Newnham, R.E. (eds) Tailoring Multiphase and Composite Ceramics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2233-7_40
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DOI: https://doi.org/10.1007/978-1-4613-2233-7_40
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