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Improving Stability and Low Leakage Current of ZnO Varistors Ceramics

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Abstract

The preparation of ZnO varistors include 96.505 mol% ZnO, 1.05 mol% Bi2O3, 1 mol% Co2O3, 1 mol% Sb2O3, 0.045 mol% CaO. In this paper, the aging characteristics of ZnO varistor when accelerated alternating current (AC) aging charge is 0.9 E1mA (135 °C/160 h) are investigated. The ZnO varistor not only has a good breakdown voltage and low leakage current, but also the electric field current characteristics before and after aging according to the ZnO varistor E-J and C-V. After aging, the breakdown voltage and leakage current change rate are small. The results show that the Ca-doped ZnO varistors can slow down the aging rate to a certain extent and have good stability under the AC electric field. It provides a basis for the preparation of highly stable ZnO varistors.

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Acknowledgements

This work was supported by the Natural Science Foundation of Xinjiang (2022D01C21).

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Authors and Affiliations

  1. School of Energy and Machinery, Dezhou University, Dezhou, 254300, People’s Republic of China

    Guanyue Sun

  2. The Wind Solar Storage Division of State Key Laboratory of Control and Simulation of Power System and Generation Equipment, School of Electrical Engineering, Xinjiang University, Urumqi, 830046, People’s Republic of China

    Hongfeng Zhao

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  1. Guanyue Sun
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Correspondence to Guanyue Sun.

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Sun, G., Zhao, H. Improving Stability and Low Leakage Current of ZnO Varistors Ceramics. Trans. Electr. Electron. Mater. 24, 267–270 (2023). https://doi.org/10.1007/s42341-023-00447-7

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  • DOI: https://doi.org/10.1007/s42341-023-00447-7

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