FIELD: chemistry.;SUBSTANCE: zinc oxide varistor ceramics comprises oxides of zinc, bismuth, antimony, cobalt and aluminum in a proportion, wt %: ZnO 85-95, Bi2O3 1.38-4.15, Sb2O3 0.96-2.9, Al2O3 1.66-4.95, Co2O3 1-3. Bismuth, antimony, cobalt and aluminum oxides have the following ratio 1.0:0.7:1.2:0.72. The resulting varistor ceramics has breakdown voltage of 4.3-4.6 kV/mm, nonlinear coefficient of 47-53 and leakage current density of 0.6-7 mA/cm2.;EFFECT: reduced eakage current density, while providing high electrical characteristics, the obtained high-voltage varistor ceramics is cheaper.;1 tbl, 4 ex
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机译：领域：化学领域;物质：氧化锌压敏电阻陶瓷包含锌，铋，锑，钴和铝的氧化物，其含量按重量百分比计：ZnO 85-95 ， Bi 2 O 3 1.38-4.15，Sb 2 O 3 0.96-2.9，Al 2 O 3 1.66-4.95，Co 2 O 3 1-3。铋，锑，钴和氧化铝的比例为1.0：0.7：1.2：0.72。所得压敏陶瓷的击穿电压为4.3-4.6 kV / mm，非线性系数为47-53，漏电流密度为0.6-7 mA / cm 2 。效果：降低了漏电流密度，而提供高电特性，所得的高压压敏陶瓷更便宜。; 1 tbl，4 ex
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