Microstructure and Electrical Properties of ZnO–Bi2O3-Based Varistor Ceramics by Different High-Energy Ball Milling Time

Cheng Hua Zhang; Ming Shuang Li; Dong Xu; Yong Fang Chen; Yuan Ling Liu; Ke Zhang

doi:10.4028/www.scientific.net/AMR.490-495.3391

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 490-495Microstructure and Electrical Properties of...

Microstructure and Electrical Properties of ZnO–Bi₂O₃-Based Varistor Ceramics by Different High-Energy Ball Milling Time

Abstract:

The microstructure and electrical properties of ZnO-Bi2O3-based varistor ceramics prepared by the high-energy ball milling were studied. The varistor ceramics samples were characterized by XRD and SEM analysis, as well as by dc electrical measurements, such as the nonlinearity coefficients, leakage current and threshold voltage. The best electrical characteristics were found in sample by the high-energy ball milling 1 h and sintered at 1000 °C for 2 h, which exhibited the threshold voltage was 457 V/mm, the nonlinear coefficient was 59.3 and the leakage current was 1.18 μA.

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Periodical:

Advanced Materials Research (Volumes 490-495)

Pages:

3391-3395

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.490-495.3391

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Online since:

March 2012

Authors:

Cheng Hua Zhang, Ming Shuang Li, Dong Xu, Yong Fang Chen, Yuan Ling Liu, Ke Zhang

Keywords:

Electrical Properties, High-Energy Ball Milling, Microstructure, Varistors, Zinc Oxide (ZnO)

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