Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis
Abstract ZnO varistors doped with Y2O3, Bi2O3, and Co2O3 were analyzed for electrical performance, microstructure, phase composition, and elemental distribution using electrical performance testing, scanning electron microscopy, X‐ray diffraction, and energy dispersive spectroscopy tests. The best r...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | International Journal of Ceramic Engineering & Science |
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| Online Access: | https://doi.org/10.1002/ces2.10245 |
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| author | Zhengzheng Fu Zongxi Zhang Songhai Fan Tao Cui Donghui Luo Yue Yin Pengfei Meng Jingke Guo |
| author_facet | Zhengzheng Fu Zongxi Zhang Songhai Fan Tao Cui Donghui Luo Yue Yin Pengfei Meng Jingke Guo |
| author_sort | Zhengzheng Fu |
| collection | DOAJ |
| description | Abstract ZnO varistors doped with Y2O3, Bi2O3, and Co2O3 were analyzed for electrical performance, microstructure, phase composition, and elemental distribution using electrical performance testing, scanning electron microscopy, X‐ray diffraction, and energy dispersive spectroscopy tests. The best results were obtained with 0.5 mol% Y2O3, 2 mol% Bi2O3, and 3 mol% Co2O3, yielding a 356 V/mm voltage gradient, 0.9 μA leakage current, and a nonlinear coefficient of 66.2. The Voronoi network model explained how Bi2O3 and Co2O3 enhance Y‐doped varistor performance. Grain size was identified as the primary factor affecting the voltage gradient, while the thick grain boundary phase impedance, the direct contact area ratio, surface state density, and donor density were key factors influencing the nonlinear coefficient and leakage current. The results indicate that doping with Bi2O3 and Co2O3 significantly enhances the electrical properties of Y‐doped varistors, and simulation methods effectively reveal the effect mechanisms of dopants on the varistors. |
| format | Article |
| id | doaj-art-c34beed3e17f45bda5a4645b29fb7132 |
| institution | Kabale University |
| issn | 2578-3270 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Ceramic Engineering & Science |
| spelling | doaj-art-c34beed3e17f45bda5a4645b29fb71322025-01-21T08:44:30ZengWileyInternational Journal of Ceramic Engineering & Science2578-32702025-01-0171n/an/a10.1002/ces2.10245Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysisZhengzheng Fu0Zongxi Zhang1Songhai Fan2Tao Cui3Donghui Luo4Yue Yin5Pengfei Meng6Jingke Guo7State Grid Sichuan Electric Power Research Institute Chengdu ChinaState Grid Sichuan Electric Power Research Institute Chengdu ChinaState Grid Sichuan Electric Power Research Institute Chengdu ChinaState Grid Sichuan Electric Power Research Institute Chengdu ChinaState Grid Sichuan Electric Power Research Institute Chengdu ChinaCollege of Electrical Engineering Sichuan University Chengdu ChinaCollege of Electrical Engineering Sichuan University Chengdu ChinaCollege of Electrical Engineering Sichuan University Chengdu ChinaAbstract ZnO varistors doped with Y2O3, Bi2O3, and Co2O3 were analyzed for electrical performance, microstructure, phase composition, and elemental distribution using electrical performance testing, scanning electron microscopy, X‐ray diffraction, and energy dispersive spectroscopy tests. The best results were obtained with 0.5 mol% Y2O3, 2 mol% Bi2O3, and 3 mol% Co2O3, yielding a 356 V/mm voltage gradient, 0.9 μA leakage current, and a nonlinear coefficient of 66.2. The Voronoi network model explained how Bi2O3 and Co2O3 enhance Y‐doped varistor performance. Grain size was identified as the primary factor affecting the voltage gradient, while the thick grain boundary phase impedance, the direct contact area ratio, surface state density, and donor density were key factors influencing the nonlinear coefficient and leakage current. The results indicate that doping with Bi2O3 and Co2O3 significantly enhances the electrical properties of Y‐doped varistors, and simulation methods effectively reveal the effect mechanisms of dopants on the varistors.https://doi.org/10.1002/ces2.10245ZnO varistorsimulation calculationY2O3${ m Y}_2{ m O}_3$Bi2O3${ m Bi}_2{ m O}_3$Co2O3${ m Co}_2{ m O}_3$electrical performance |
| spellingShingle | Zhengzheng Fu Zongxi Zhang Songhai Fan Tao Cui Donghui Luo Yue Yin Pengfei Meng Jingke Guo Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis International Journal of Ceramic Engineering & Science ZnO varistor simulation calculation Y2O3${ m Y}_2{ m O}_3$ Bi2O3${ m Bi}_2{ m O}_3$ Co2O3${ m Co}_2{ m O}_3$ electrical performance |
| title | Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis |
| title_full | Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis |
| title_fullStr | Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis |
| title_full_unstemmed | Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis |
| title_short | Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis |
| title_sort | influence of y bi co oxide doping on electrical performance of zno varistors based on simulation analysis |
| topic | ZnO varistor simulation calculation Y2O3${ m Y}_2{ m O}_3$ Bi2O3${ m Bi}_2{ m O}_3$ Co2O3${ m Co}_2{ m O}_3$ electrical performance |
| url | https://doi.org/10.1002/ces2.10245 |
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