碳钢表面钛酸酯及其与PVC复合修饰膜的阻抗谱特征  

IMPEDANCE SPECTRUM CHARACTERISTICS OF CARBON STEEL WITH COMPLEXLY MODIFIED FILM FORMED BY TITANATE AND PVC

作　　者：宋诗哲[1] 王维[1] 

机构地区：[1]天津大学材料科学与工程系

出　　处：《中国腐蚀与防护学报》1995年第4期273-278,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：中科院腐蚀科学开放研究实验室项目;国家自然科学基金

摘　　要：实验研究了未经修饰和经Ｂｍ钛酸酯修饰及钛酸酯与ＰＶＣ复合修饰的三种４５钢试样在１．０ｍｏｌ／ＬＨ２ＳＯ４和０．５ｍｏｌ／ＬＮａＣｌ溶液中的阻抗谱。根据三种不同体系的阻抗谱特征建立了相应的等效电路模型，阻抗数据解析的结果证实了复合修饰膜结构模型和等效电路模型的正确性。Chemical modification of metal surface is an effective method for corrosion prevention. In this work Electrochemical Impedance Spectroscopy(EIS) technique was employed to study the corrosion performance of the specimens of carbon steel (0.45% C), modified by titanate, complexly modified by titanate and PVC Polymer and non-modified as contrast in 1.0 mol/L H2SO4 and 0.5mol/L NaCl media. From the impedance spectrum charactreristics the models of equivalent circuit for these three corrosion systems were established.The research results show that the corrosion resistance of the carbon steel specimen complexly modified by titanste and polymer (PVC) is greatly improved. The anti-corrosion mechanism and the structure models of the complexly modified film were discussed.

关 键 词：钛酸酯 复合修饰膜 电化学阻抗谱 碳钢 

分 类 号：TG174.46[金属学及工艺—金属表面处理]