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在室温0.1 mol/L H_2SO_4+0.25 mol/L Na_2SO_4溶液中,研究了添加不同浓度丙烯基硫脲(ATU)对块体纳米晶工业纯铁(BNII)(通过严重塑性变形获得)和普通工业纯铁(CPII)电化学腐蚀行为的影响。当浸泡5 min后,CPII的Nyquist谱图上出现感抗弧,而BNII的Nyquist谱图为单阻抗谱。随着时间延长至2h,BNII的Nyquist谱图上出现两个时间常数;CPII的阻抗复平面上出现一圆心下偏的单阻抗谱。
In the 0.1 mol / L H 2 SO 4 + 0.25 mol / L Na 2 SO 4 solution at room temperature, the effect of adding different concentrations of acrylthiourea (ATU) on the bulk nanocrystalline industrial pure iron (BNII) obtained by severe plastic deformation and ordinary industrial pure Influence of Iron (CPII) Electrochemical Corrosion Behavior. When soaked for 5 min, inductive arcs appear on the Nyquist plots of CPII, whereas the Nyquist spectra of BNII are single impedance spectra. As the time prolongs to 2h, two time constants appear on the Nyquist spectra of BNII; a single impedance spectroscopy with a center-down bias appears on the impedance complex plane of CPII.