[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.4191/kcers.2019.56.1.11

Effects of Low-Temperature Sintering on Varistor Properties and Stability of VMCDNB-Doped Zinc Oxide Ceramics

Nahm, Choon-W. (Semiconductor Ceramics Laboratory, Department of Electrical Engineering, Dongeui University)

Publication Information

Journal of the Korean Ceramic Society / v.56, no.1, 2019 , pp. 84-90 More about this Journal

Abstract

The varistor properties and stability against dc-accelerated stress of $V_2O_5-Mn_3O_4-Co_3O_4-Dy_2O_3-Nb_2O_5-Bi_2O_3$ (VMCDNB)-doped zinc oxide ceramics sintered at $850-925^{\circ}C$ were investigated. Increasing the sintering temperature increased the average grain size from 4.6 to 8.7 mm and decreased the density of the sintered pellet density from 5.54 to $5.42g/cm^3$ . The breakdown field decreased from 5919 to 1465 V/cm because of the increase in the average grain size. Zinc oxide ceramics sintered at $875^{\circ}C$ showed the highest nonlinear coefficient (43.6) and the highest potential barrier height (0.96 eV). Zinc oxide ceramics sintered at $850^{\circ}C$ showed the highest stability: the variation rate of the breakdown field was -2.0% and the variation rate of the nonlinear coefficient was -23.3%, after application of the specified stress (applied voltage/temperature/time).

Keywords

Sintering temperature; Electrical properties; Stress; Varistors;

Citations & Related Records

Reference

1	J. C. Wurst and J. A. Nelson, "Lineal Intercept Technique for Measuring Grain size in Two-Phase Polycrystalline Ceramics," J. Am. Ceram. Soc., 55 [97-12] 109-11 (1972). DOI
2	M. Mukae, K. Tsuda, and I. Nagasawa, "Capacitance-vs-Voltage Characteristics of ZnO Varistor," J. Appl. Phys., 50 [6] 4475-76 (1979). DOI
3	J. Fan and R. Freer, "Deep Level Transient Spectroscopy of Zinc Oxide Varistors Doped with Aluminum Oxide and/or Silver Oxide," J. Am. Ceram. Soc., 77 [10] 2663-68 (1994). DOI
4	M. Matsuoka, "Nonohmic Properties of Zinc Oxide Ceramics," Jpn. J. Appl. Phys., 10 [6] 736-46 (1971). DOI
5	L. M. Levinson and H. R. Philipp, "The Physics of Metal Oxide Varistors," J. Appl. Phys., 46 [3] 1332-41 (1975). DOI
6	L. M. Levinson and H. R. Philipp, "Zinc Oxide Varistor-A Review," Am. Ceram. Soc. Bull., 65 [4] 639- 46 (1986).
7	T. K. Gupta, "Application of Zinc Oxide Varistor," J. Am. Ceram. Soc., 73 [7] 1817-40 (1990). DOI
8	D. R. Clarke, "Varistor Ceramics," J. Am. Ceram. Soc., 82 [3] 485-502 (1999). DOI
9	X. U. Dong, S. Xiaofeng, C. Xiaonong, Y. Juan, F. Yuee, Y. Hongming, and S. Liyi, "Microstructure and Electrical Properties of $Lu_2O_3$ -doped $ZnO-Bi_2O_3$ -based Varistor Ceramics," Trans. Nonferrous Met. Soc. China, 20 [12] 2303-8 (2012). DOI
10	X. U. Dong, W. U. Jie-ting, J. Lei, X. U. Hongxing, Z. Peimei, Y. U. Renhong, and C. Xiaonong. "Highly Nonlinear Property and Threshold Voltage of $Sc_2O_3$ doped $ZnO-Bi_2O_3$ -based Varistor Ceramics," J. Rare Earths, 31 [2] 158-63 (2013). DOI
11	C.-W. Nahm, "Influence of Nb Addition on Microstructure, Electrical, Dielectric Properties, and Aging Behavior of MnCoDy Modified Zn-V-based Varistors," J. Mater. Sci.: Mater. Electron., 21 [6] 540-47 (2010). DOI
12	K. Mukae, K. Tsuda, and I. Nagasawa, "Non-Ohmic Properties of ZnO-Rare Earth Metal Oxide- $Co_3O_4$ Ceramics," Jpn. J. Appl. Phys., 16 [8] 1361-68 (1977). DOI
13	K. Mukae, "Zinc Oxide Varistors with Praseodymium Oxide," Am. Ceram. Soc. Bull., 66 [10] 1329-31 (1987).
14	C.-W. Nahm, "The Nonlinear Properties and Stability of $ZnO-Pr_6O_{11}-CoO-Cr_2O_3-Er_2O_3$ Ceramic Varistors," Mater. Lett., 47 [3] 182-87 (2001) DOI
15	J.-K. Tsai and T.-B. Wu, "Non-Ohmic Characteristics of $ZnO-V_2O_5$ Ceramics," J. Appl. Phys., 76 [8] 4817-22 (1994). DOI
16	J.-K. Tsai and T.-B. Wu, "Microstructure and Nonohmic Properties of Binary $ZnO-V_2O_5$ Ceramics Sintered at $900^{\circ}C$ ," Mater. Lett., 26 [3] 199-203 (1996). DOI
17	C.-W. Nahm, "DC Accelerated Aging Behavior of Co-Dy-Nb doped Zn-V-M-based Varistors with Sintering Process," J. Mater. Sci.: Mater. Electron., 22 [4] 444-51(2011). DOI
18	C.-W. Nahm, "Effect of Sintering Process on Electrical Properties and Ageing Behavior of $ZnO-V_2O_5-MnO_2-Nb_2O_5$ Varistor Ceramics," J. Mater. Sci.: Mater. Electron., 23 [2] 457-63 (2012). DOI
19	C.-W. Nahm, "Effect of $Dy_2O_3$ on Microstructure and Electrical Properties of $ZnO-V_2O_5-MnO_2-CoO$ Ceramics," J. Mater. Sci.: Mater. Electron., 22 [11] 1674-80 (2011). DOI
20	C.-W. Nahm, "Improvement of Electrical Properties of $V_2O_5$ Modified ZnO Ceramics by Mn-doping for Varistor Applications," J. Mater. Sci.: Mater. Electron., 19 [10] 1023-29 (2008). DOI
21	C.-W. Nahm, " $Nb_2O_5$ Doping Effect of on Electrical Properties of $ZnO-V_2O_5-Mn_3O_4$ Varistor Ceramics," Ceram. Int., 38 [6] 5281-85 (2012). DOI
22	C.-W. Nahm, "Effect of $Bi_2O_3$ Doping on Microstructure and Electrical Properties of $ZnO-V_2O_5-Mn_3O_4$ Semiconducting Ceramics," J. Mater. Sci.: Mater. Electron., 28 [1] 903-8 (2017). DOI