The influence of heat-treatment on the current-voltage behavior of the ZnO-Bi2O3 based varistors |
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| Authors: | Jianying Li Shengtao Li Fuyi Liu M. A. Alim |
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| Affiliation: | (1) State Key Laboratory of Electrical Insulation and Equipment, Xi’an Jiaotong University, Xi’an, China, 710049;(2) Department of Electrical Engineering Alabama Agricultural, Mechanical University, P.O. Box 297, Huntsville, Alabama, 35762, U.S.A. |
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| Abstract: | The post-sintering heat treatment on the current-voltage behavior of the ZnO-Bi2O3 based varistors is reported. It is suggested that only phase transition of the Bi2O3 is not alone responsible for the resulting electrical performance by these devices. The ambient condition influences the performance parameters. Thus, incorporating the role of oxygen and zinc interstitial in the total device during the post-sintering heat-treatment is accounted as responsible parameters for the ultimate performance. Two recipes are used in demonstrating the effect of heat-treatment on the functional behavior of the devices. |
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