Electric characteristics of ZnO-varistors sintered at low temperature

被引：1
|
作者：
Miyamoto, Kei [1 ]
Miyamoto, Hiroki [1 ]
Iga, Atsushi [1 ]
机构：
[1] Technology Research Inst of Osaka, Prefecture, Osaka, Japan
来源：
Key Engineering Materials | 2000年 / 181卷
关键词：
Additives - Composition effects - Electric properties - Low temperature effects - Mixtures - Powder metals - Sintering - Zinc oxide;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Disc-type ZnO varistors were sintered at temperatures ranging from 800°C to 1100°C. A mixture of (1-x)Bi2O3+x&middotSb2O3 was pre-fired at 555°C and added to ZnO powder together with other additive oxides. The electric response of the material thermal treated at 700°C for 1 hour was analyzed. Such heat treatment did not change the varistor voltage significantly, but the nonlinear parameter value (1mA α 0.01mA). The extent of its variation was function of the composition ratio and sintering temperature, excepting the composition range 0.1 &le × &le 0.4. Arrestor-type varistors were prepared in bulk and their electeic characteristics are reported.
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页码：55 / 58
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