论文部分内容阅读
用动电位极化曲线和恒电位暂态电流方法研究了ＥＤＴＡ对碱性溶液中Ｃｌ－引起铁孔蚀的抑制作用。结果表明，极低浓度的ＥＤＴＡ能阻抑Ｃｌ－引起铁孔蚀，原因在于ＥＤＴＡ能与Ｆｅ３＋形成非常稳定的络合物ＦｅＹ－，抑制了腐蚀产物ＦｅＣｌ３的形成。
The potentiodynamic polarization curve and potentiostatic transient current method were used to study the inhibitory effect of EDTA on Cl-induced iron pitting corrosion in alkaline solution. The results show that very low concentration of EDTA can suppress Cl - -induced iron pitting corrosion because EDTA can form a very stable FeY- complex with Fe3 + and inhibit the formation of the corrosion product FeCl3.