湖南大学学报（自然科学版）Issue(7)：108-112,5.
聚吡咯膜对不锈钢腐蚀的防护机理研究
Research on the Corrosion Protection Mechanism of Polypyrrole Film on Stainless Steel
摘要
Abstract
To measure the corrosion resistance of stainless steel and to study the corrosion protection mechanism of polypyrrole film (PPy)on stainless steel,measurement methods such as cyclic voltammetry, electrochemical impedance spectroscopy(EIS)and open circuit potential time curve were used to detect the electrochemical behavior of stainless steel/PPy in Sodium Dodecyl Sulfate (SDBS )and NaCl solution. Then,a reasonable equivalent circuit was established to explain the EIS.The result indicated that reasona-ble equivalent circuit could isolate the corrosion resistance of stainless steel and the redox resistance of PPy,which perfectly explained the impedance behavior of stainless steel/PPy in solution.In 3.5%NaCl solution,the PPy has good corrosion inhibition effect on stainless steel.The electrochemical reaction be-tween stainless steel and PPy film could release DBS-and insoluble substance to inhibit metal corrosion, which would be the corrosion resistance mechanism of polypyrrole film (PPy)on stainless steel.关键词
聚吡咯/不锈钢/电化学阻抗谱/腐蚀Key words
polypyrroles (PPy)/stainless steel/electrochemical impedance spectroscopy (EIS)/corro-sion分类
矿业与冶金引用本文复制引用
朱日龙,李国希,罗岳平,王业耀,王金生..聚吡咯膜对不锈钢腐蚀的防护机理研究[J].湖南大学学报（自然科学版）,2014,(7):108-112,5.基金项目
环保公益性行业科研专项资助项目(201309050) （201309050）
