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The ZnO-Pr6O11-Co2O3-Cr2O3-Er2O3-SiO2 varistors were prepared by a solid-state sintering method. The effect of SiO2 doping on the phase, microstructure, varistor property, and impedance characteristic of the ZnO varistors was investigated. The results show that the grain size decreases gradually with the increase of SiO2 content due to the restraining effect of grain growth in SiO2. The ZnO varistor with SiO2 content of 1.0% (in mole fraction) has an optimum overall performance to provide overvoltage protection for circuit (i.e., the most second phase generated, the maximum breakdown voltage of 435.5 V/mm, the maximum mean grain boundary voltage of 1.63 V, the maximum nonlinear coefficient of 17.5, and the maximum resistivity of grain boundary of 17 400 MΩ·cm, the maximum barrier height of grain boundary of 0.37 eV, and the minimum leak current of 1 μA, respectively). The breakdown voltage and nonlinear coefficient of ZnO varistor with SiO2 content of 1.0% are 3.6 and 6.6 times greater than those of ZnO varistor without SiO2.

, authors=Qiao ZHU, Wenbin CAO, authorsList=Qiao ZHU, Wenbin CAO, authorCompany=null, correspAuthors=null, authorNote=

ZHU Qiao (1980-), female, Lecturer. E-mail:

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采用固相烧结法制备ZnO-Pr6O11-Co2O3-Cr2O3-Er2O3-SiO2压敏陶瓷,研究了SiO2掺杂对ZnO压敏陶瓷的物相、微观形貌、压敏特性和阻抗特性等的影响。结果表明:SiO2具有抑制晶粒生长的作用,随着SiO2掺杂量增加,晶粒尺寸逐渐减小;SiO2掺杂量为1.0%(摩尔分数)时,ZnO压敏陶瓷的性能最好,生成的第二相物质最多,击穿场强、平均晶界电压、非线性系数、晶界电阻率和晶界势垒高度均为最大,其值分别为435.5 V/mm,1.63 V,17.5,17 400 MΩ·cm和0.37 eV,漏电流最小为1 μA;与未掺杂SiO2的ZnO压敏陶瓷相比,击穿场强和非线性系数分别提高了3.6倍和6.6倍。

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朱桥(1980—),女,讲师。

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SiO2掺杂对ZnO-Pr6O11基压敏陶瓷电学性能的影响
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朱桥 , 曹文斌
硅酸盐学报 | 研究论文 2022,50(12): 3206-3211
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硅酸盐学报 |研究论文 2022 , 50 (12) : 3206 -3211
SiO2掺杂对ZnO-Pr6O11基压敏陶瓷电学性能的影响
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朱桥 , 曹文斌
作者信息
  • 陕西科技大学文理学院,陕西科技大学半导体材料与器件研究中心,西安 710021
作者简介:

朱桥(1980—),女,讲师。

Effects of SiO2 Doping on Electrical Properties of ZnO-Pr6O11 Based Varistor Ceramics
Qiao ZHU , Wenbin CAO
Affiliations
  • School of Arts and Sciences, Shaanxi University of Science and Technology, Research Center for Semiconductor Materials and Devices, Shaanxi University of Science and Technology, Xi'an 710021, China
  • ZHU Qiao (1980-), female, Lecturer. E-mail:

出版时间: 2022-12-20 doi: 10.14062/j.issn.0454-5648.20220502
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采用固相烧结法制备ZnO-Pr6O11-Co2O3-Cr2O3-Er2O3-SiO2压敏陶瓷,研究了SiO2掺杂对ZnO压敏陶瓷的物相、微观形貌、压敏特性和阻抗特性等的影响。结果表明:SiO2具有抑制晶粒生长的作用,随着SiO2掺杂量增加,晶粒尺寸逐渐减小;SiO2掺杂量为1.0%(摩尔分数)时,ZnO压敏陶瓷的性能最好,生成的第二相物质最多,击穿场强、平均晶界电压、非线性系数、晶界电阻率和晶界势垒高度均为最大,其值分别为435.5 V/mm,1.63 V,17.5,17 400 MΩ·cm和0.37 eV,漏电流最小为1 μA;与未掺杂SiO2的ZnO压敏陶瓷相比,击穿场强和非线性系数分别提高了3.6倍和6.6倍。

氧化锌压敏陶瓷  /  二氧化硅掺杂  /  微观结构  /  压敏性能  /  阻抗性能

The ZnO-Pr6O11-Co2O3-Cr2O3-Er2O3-SiO2 varistors were prepared by a solid-state sintering method. The effect of SiO2 doping on the phase, microstructure, varistor property, and impedance characteristic of the ZnO varistors was investigated. The results show that the grain size decreases gradually with the increase of SiO2 content due to the restraining effect of grain growth in SiO2. The ZnO varistor with SiO2 content of 1.0% (in mole fraction) has an optimum overall performance to provide overvoltage protection for circuit (i.e., the most second phase generated, the maximum breakdown voltage of 435.5 V/mm, the maximum mean grain boundary voltage of 1.63 V, the maximum nonlinear coefficient of 17.5, and the maximum resistivity of grain boundary of 17 400 MΩ·cm, the maximum barrier height of grain boundary of 0.37 eV, and the minimum leak current of 1 μA, respectively). The breakdown voltage and nonlinear coefficient of ZnO varistor with SiO2 content of 1.0% are 3.6 and 6.6 times greater than those of ZnO varistor without SiO2.

zinc oxide varistor  /  silicon oxide doping  /  microstructure  /  varistor property  /  impedance characteristic
朱桥, 曹文斌. SiO2掺杂对ZnO-Pr6O11基压敏陶瓷电学性能的影响. 硅酸盐学报, 2022 , 50 (12) : 3206 -3211 . DOI: 10.14062/j.issn.0454-5648.20220502
Qiao ZHU, Wenbin CAO. Effects of SiO2 Doping on Electrical Properties of ZnO-Pr6O11 Based Varistor Ceramics[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (12) : 3206 -3211 . DOI: 10.14062/j.issn.0454-5648.20220502
  • 国家自然科学基金(51802183)
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doi: 10.14062/j.issn.0454-5648.20220502
  • 接收时间:2022-06-23
  • 首发时间:2026-10-20
  • 出版时间:2022-12-20
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  • 收稿日期:2022-06-23
  • 修回日期:2022-08-05
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国家自然科学基金(51802183)
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    陕西科技大学文理学院,陕西科技大学半导体材料与器件研究中心,西安 710021
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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