采用交流阻抗技术结合恒电流阴极充氢和动态阴、阳 极极化法，研究了工业纯钛在海水中的阴极极化性能.结果表明：极化曲线所表现的lgI～E关系与交流阻抗法得出的lg(Rp)～-E关系和lg(Cd)～-E关系有对应性；交流阻抗的结果更直接地反映工业纯钛在海水中阴极极化后的表面状态变化，极化电阻Rp随着阴极电位的增大，呈下降趋势，微分电容Cd随着阴极电位的增大，呈上升趋势.充氢后的钛阳极溶解电流增大.
The cathodic polarization character of industrial pure titanium in sea water was studied by meas of AC impedance technique, galvanostat cathodic charging and dynamic polarization technique.The result showed that the relationship between lgI and E for the polarization curves corresponded with the relations for lg(Rp)～-E and lg(Cd)～-E detected by AC Impedance technique accordingly.The conclusion reached by the AC Impedance technique can indicate the change of surface state of industrial pure titanium after cathodic polarization.With the increase of cathodic potential,the polarization resistance decreased and the differential capacitance increased dversely.After titanium was charged,the anodic dissolving current of titanium rose.
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