Er2O3 Doping Effect on Varistor Properties and Multiimpulse Stress Behavior of ZnO–PrO1.83–CoO–Cr2O3–Dy2O3 Ceramics
Er2O3 Doping Effect on Varistor Properties and Multiimpulse Stress Behavior of ZnO–PrO1.83–CoO–Cr2O3–Dy2O3 Ceramics
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DOI：
10.1111/jace.12548
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发表时间：
2013-09
影响因子：
3.9
通讯作者：
C. Nahm
中科院分区：
文献类型：
--
作者：
C. Nahm
研究了Er 2 O3掺杂量在0 ~ 2.0mol%范围内对ZnO-PrO_（1.83）-CoO-Cr_2 O_3-Dy_2 O_3陶瓷压敏电阻性能和脉冲老化行为的影响。随着Er 2 O3含量的增加，非线性系数从42增加到56。箝位电压比（K）随着Er 2 O3的量的增加而降低。当Er 2 O3掺杂量为2.0mol%时，压敏电阻的箝位特性最好，在1-50 A的冲击电流下，K = 1.43-1.83。掺杂0.25mol%的Er 2 O3的压敏电阻表现出最强的电稳定性，在400 A的脉冲电流下施加400次后，击穿电场的变化率为-0.5%，非线性系数的变化率为-5.5%，漏电流的变化率为-1.5
The Er2O3 doping effects on varistor properties and impulse aging behavior of the ZnO–PrO1.83–CoO–Cr2O3–Dy2O3 ceramics were investigated in the range of 0–2.0 mol%. The nonlinear coefficient increased from 42 to 56 with an increase in the amount of Er2O3. The clamp voltage ratio (K) decreased with an increase in the amount of Er2O3. The varistors doped with 2.0 mol% in the amount of Er2O3 exhibited the best clamping characteristics, with K = 1.43–1.83 at an impulse current of 1–50 A. The varistors doped with 0.25 mol% in the amount of Er2O3 exhibited the strongest electrical stability, with the variation rate of the breakdown field of −0.5%, the variation rate of the nonlinear coefficient of −5.5%, and the variation rate of the leakage current of −1.5% after applying 400 times at an impulse current of 400 A