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本 文采用宽 频阻抗 法首次测 得了 铝合 金表 面 脉冲 氧化 膜 的 Ｂｏｄｅ 图 ．实 验表 明： 脉冲氧化膜 与直流 氧化膜的 主要差别 在于多 孔层，脉 冲氧化膜 比较 均匀， 基本 无缺 陷．通 过显 微观 察及 Ｖ Ｉ 特性 曲线等测 定手段， 进一步佐 证了交 流阻抗测 试的部分 结果．
In this paper, Bode plot of pulsed oxide film on aluminum alloy surface was measured for the first time by the broadband impedance method. The experimental results show that the main difference between the pulsed oxide film and the DC oxide film is the porous layer, and the pulsed oxide film is relatively uniform with almost no defects. Through the microscopic observation and V I characteristic curve measurement means, to further substantiate the AC impedance test part of the results.