摘要:概述了低压ZnO压敏电阻的重要添加剂的作用,阐述了其电性能"三参数"(压敏电压梯度、非线性系数和漏电流)的影响因素.用低压ZnO压敏电阻的基本配方,以及在此基础上分别添加Co2O3、MnCO3、Co2O3+MnCO3四种配方制备样品作对比实验.发现Co2O3、MnCO3掺杂后都能引起压敏电压梯度升高,非线性系数显著提高,漏电流明显降低,且效果Co2O3+MnCO3大于MnCO3大于Co2O3.对造成上述差别的原因进行了深入分析.
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