Preparation and Characterization of Manganese Doped ZnO Varistors

Abstract:

In this paper, the influences of MnO2 and V2O5 on the varistor properties of ZnO- V2O5-based ceramics were examined. The results show that, the addition of MnO2 to the ZnO-V2O5-based ceramics was found to improve varistor properties. The sintered temperature was benefit to enhancing the growth of crystals of the samples and the non-ohomic coefficient can be improved. The samples have non-ohmic coefficient α=27.8 and varistor voltage U1mA=60.9V/mm when they are sintered at 1100°C with 2 hours.

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 1062-1066
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.1062
• Online since: February 2012
• Authors: Jian San Zheng, Shao Feng Zhu
• Keywords: Microstructure, Varistor, Zinc Oxide (ZnO)

References

[1] R Metz, H Delalu, JR Vignalou, et al. Electrical properties o f varistor in relation to their true bismuth composition after sintering[J]. Mater Chem. Phys, 2000, 63: 157-162

DOI: 10.1016/s0254-0584(99)00227-8

[2] K Al Abdullah, A Bui and A Loubiere. Low frequency and low temperature behavior of ZnO-based varistor by ac impedance measurements[J]. J Appl. Phys, 1991, 69(7): 4046-4052

DOI: 10.1063/1.348414

[3] Zhang Congchun, Zhou Dongxiang, Gong Shuping. Effcet of Sb2O3 doping content on grain-boundary characteristics and electrical properties of ZnO varistors[J]. Ceramic Technology, 2001,29 (6) :602-605

[4] Ma Jinyi. Study of Bismuth-free ZnO varistor [J]. Piezoelectric & Acoustooptics, 2000,22 (1) :27-29

[5] Wang Yuping, Wan Yun.Study on the effect of Al2O3 Dosing on properties of ZnO varistors [J]. Porcelain arrester, 2000, (4) :42-44(in Chinese).

[6] Zhang Congchun, Zhou Dongxiang, Gong Shuping. etc.. The effect of Mn(NO3)2, Co(NO3)2 doping on the properties of low voltage ZnO varistor ceramics.[J]. Electronic Components and Materials, 2000,19 (6): 7-9(in Chinese).

[7] Fan Kuntai, Han Shubin, Wu Dexi. Improvement of the performance of low voltage ZnO varistors, 1998,17 (5) :32-33

[8] J.K. Tsai, T.B.Wu. Microstructure and Nonohmic Properties of ZnO-V2O5 Ceramics [J]. Japanese Journal Appl. Phys.,1995,34(12A):6452-6457

[9] Huey-Hoon Hng, Kevin M. Knowles Microstructure and Current-Voltage Characteristics of Multicomponent Vanadium-Doped Zinc Oxide Varistors[J]. J American Ceramic Soc., 2004, 83 (10): 2455-2462

DOI: 10.1111/j.1151-2916.2000.tb01576.x

[10] Li Xiaopeng,Le Kun. Study on Zinc Oxide Nonlinear Resistor Doped with Rare-earth oxides [J]. Porcelain arrester,2004,4:26 -27(in Chinese).

[11] Choon-Woo Nahm. Microstructure and varistor properties of ZnO-V2O5-MnO2-based ceramics[J]. Mater Sci.,2007,42:8370-8373

DOI: 10.1007/s10853-007-1955-5