Gaoya dianqi为了比较不同类型冲击电流对氧化锌（ZnO）压敏电阻直流老化的影响，将相同类型的ZnO压敏电阻样品分别开展2 ms方波（峰值为2 kA）耐受试验和4/10 μs冲击电流（峰值为100 kA）试验。实验结果表明，在1~3轮（3~9次）的冲击耐受下，2 ms方波对ZnO压敏电阻的老化特性能起到一定优化作用，而4/10 μs大电流冲击则使得ZnO压敏电阻老化特性持续劣化。利用扫描电子显微镜（SEM）、光谱仪、数字源表研究其微观结构以及电气性能参数变化。结合实验结果分析原因，4/10 ...
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