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Effect of Doping Sb2O3 on Distribution Characteristics of ZnO Varistor Ceramic Grain
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Yao WANG1, Zongke HOU1, Jianying LI1, Liucheng HAO2, Kai LI2, Xinke ZHAO2, Jiguang SONG2, Xiaogang CHEN3
Insulating Materials | 2021, 54(10) : 41 - 50
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Insulating Materials | 2021, 54(10): 41-50
• Material Research •
Effect of Doping Sb2O3 on Distribution Characteristics of ZnO Varistor Ceramic Grain
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Yao WANG1, Zongke HOU1, Jianying LI1, Liucheng HAO2, Kai LI2, Xinke ZHAO2, Jiguang SONG2, Xiaogang CHEN3
Affiliations
  • 1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
  • 2Pinggao Group Co., Ltd., Pingdingshan 467001, China
  • 3State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310000, China
Published: 2021-10-20 doi: 10.16790/j.cnki.1009-9239.im.2021.10.006
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It is one of the important methods to obtain the ZnO varistor ceramics with high-performance by improving the distribution uniformity of grain. In this paper, ZnO varistor ceramics samples doping with different contents of Sb2O3 were studied from several aspects such as the average grain size, distribution uniformity of grain size, and shape of grain. In addition, the non-uniform coefficient of grain size and the shape parameter were applied for quantification. The results show that with the increase of the doping content of Sb2O3, the average grain sizes, the non-uniform coefficients of grain size, and the shape parameters of the samples decrease generally. It suggests that the distribution uniformity of grain size is improved, and the grain shapes develop from slender to regular, which can also explain the enhance of the electrical properties of the samples. According to the analysis, the spinel phase formed after doping Sb2O3 inhibits the anisotropic growth of the crystal grains, which decreases the grain size and improves the uniform distribution and the shape of the grains. In addition, the inhibiting effect of spinel phase on the growth of grains in the large-grain region is weaker than that in the little-grain region.

ZnO varistor ceramics  /  element doping  /  grain size  /  non-uniform coefficient  /  grain shape
Yao WANG, Zongke HOU, Jianying LI, Liucheng HAO, Kai LI, Xinke ZHAO, Jiguang SONG, Xiaogang CHEN. Effect of Doping Sb2O3 on Distribution Characteristics of ZnO Varistor Ceramic Grain[J]. Insulating Materials, 2021 , 54 (10) : 41 -50 . DOI: 10.16790/j.cnki.1009-9239.im.2021.10.006
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doi: 10.16790/j.cnki.1009-9239.im.2021.10.006
  • Receive Date：2020-11-13
  • Online Date：2026-03-23
  • Published：2021-10-20
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  • Received：2020-11-13
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Affiliations
    1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
    2Pinggao Group Co., Ltd., Pingdingshan 467001, China
    3State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310000, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.10.006
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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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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