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High voltage gradient zinc oxide based varistor material and preparation method thereof
The invention discloses a high voltage gradient zinc oxide based varistor material and a preparation method thereof and aims at mainly solving the problems of uneven doping, large energy consumption and low efficiency in the prior art. The high voltage gradient zinc oxide based varistor material is prepared from the following components in percentage by weight: 86.0-96.0 percent of ZnO, 1.0-5.0 percent of Bi2O3, 0.1-0.6 percent of Pr2O3/La2O3, 0.5-3.0 percent of Sb2O3, 0.5-1.8 percent of Co2O3, 0.05-1.0 percent of Ni2O3, 0.5-1.0 percent of MnCO3/MnO2, 0.5-1.0 percent of Cr2O3, 0.02-0.3 percent of Al2O3, 0.5-2.0 percent of Y2O3, 0.05-1.0 percent of B2O3 and 0.03-0.08 percent of MgO. The preparation method comprises the following steps: preparing a composite dopant by virtue of a chemical coprecipitation method, and carrying out a high energy ball milling method on ZnO and the prepared composite dopant to prepare zinc oxide based composite powder. The high voltage gradient zinc oxide based varistor material can be widely used for varistor components in the field of power systems, high-speed railways and the like and is capable of obviously lowering the weights, the volumes and the production costs of the varistor components.
High voltage gradient zinc oxide based varistor material and preparation method thereof
The invention discloses a high voltage gradient zinc oxide based varistor material and a preparation method thereof and aims at mainly solving the problems of uneven doping, large energy consumption and low efficiency in the prior art. The high voltage gradient zinc oxide based varistor material is prepared from the following components in percentage by weight: 86.0-96.0 percent of ZnO, 1.0-5.0 percent of Bi2O3, 0.1-0.6 percent of Pr2O3/La2O3, 0.5-3.0 percent of Sb2O3, 0.5-1.8 percent of Co2O3, 0.05-1.0 percent of Ni2O3, 0.5-1.0 percent of MnCO3/MnO2, 0.5-1.0 percent of Cr2O3, 0.02-0.3 percent of Al2O3, 0.5-2.0 percent of Y2O3, 0.05-1.0 percent of B2O3 and 0.03-0.08 percent of MgO. The preparation method comprises the following steps: preparing a composite dopant by virtue of a chemical coprecipitation method, and carrying out a high energy ball milling method on ZnO and the prepared composite dopant to prepare zinc oxide based composite powder. The high voltage gradient zinc oxide based varistor material can be widely used for varistor components in the field of power systems, high-speed railways and the like and is capable of obviously lowering the weights, the volumes and the production costs of the varistor components.
High voltage gradient zinc oxide based varistor material and preparation method thereof
ZHANG YINGYING (Autor:in) / HAN SHAOJUAN (Autor:in) / XU ZHUANGZHI (Autor:in) / XUE JIAN (Autor:in) / ZHANG MING (Autor:in) / YANG DIANLAI (Autor:in)
03.06.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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