无机材料学报

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化学共沉淀粉体制备ZnO压敏电阻

袁方利; 凌远兵; 李晋林; 季幼章+   

  1. 中国科学院化工冶金研究所; 北京100080; 中国科学院等离子体物理研究所; 合肥230031

  • 收稿日期:1997-04-11 修回日期:1997-07-02 出版日期:1998-04-20 网络出版日期:1998-04-20

ZnO Varistors Prepared by Chemical Coprecipitation Powders

YUAN Fang-Li; LING Yuan-Bing; LI Jin-Lin; LI You-Zhang+   

  1. Institute of Chemical Metallurgy Chinese Academy of Sciences Beijing 100080 China; +Institute of Plasma Physics Chinese Academy of Sciences Hefei 250051 China
  • Received:1997-04-11 Revised:1997-07-02 Published:1998-04-20 Online:1998-04-20

摘要: 本文采用化学共沉淀法制备了颗粒细、活性好的ZnO压敏电阻粉体,表征了粉体的性能.利用共沉淀粉体制备了α=50、压敏电压高、通流能力大的压敏电阻.与传统氧化物机械混合粉体制得的压敏电阻比较,共沉淀粉体获得的压敏电阻微观结构均匀.

关键词: 化学共沉淀, 粉体, ZnO压敏电阻

Abstract: Fine and active ZnO varistor powders were prepared by coprecipitation. Properties of the powders were demonstrated. Nonlinearity coefficients 50, high breakdown fields and large surge capability were achieved in varistor produced by these powders. The microstructure of varistors prepared by coprecipitation powders is uniformer than that of varistors prepared by conventionally prepared powders by mixed oxide technique.

Key words: coprecipitation, powders, ZnO varistors

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