摘要
采用电化学阻抗谱(EIS)、动电位极化测试技术,研究镀锌钢在不同浓度NaCl和NaHSO3溶液中的腐蚀行为,利用扫描电镜(SEM)、能谱(EDS)研究镀锌钢表面腐蚀形貌和腐蚀产物。结果表明,NaCl及NaHSO3均加速镀锌钢腐蚀,且随着腐蚀介质浓度的增大,镀锌钢自腐蚀电位负移,腐蚀电流密度逐渐增大,NaCl和NaHSO3混合介质对镀锌钢的腐蚀速率比单独NaCl或NaHSO3存在时要大。
Electrochemical corrosion behavior of galvanized steel in liquid media with different concentration of Cl-and HSO3- was investigated by means of electrochemical impedance spectroscopy（EIS）and potentiodynamic polarization, as well as scanning electron microscopy（SEM） with energy dispersive spectroscopy（EDS）. Results showed that in solutions with NaCl or NaHSO3, the corrosion rate of galvanized steel was accelerated and the corrosion potential of the galvanized steel electrode shifted negatively, while the corrosion current density increased with the increasing concentration of Cl-or HSO3-. In addition, the effect of the combination of Cl-and HSO3- on the corrosion of galvanized steel was more serious than that of the single Cl-or HSO3-.
作者
张仁坤
程红红
吴跃斌
周开河
方云辉
刘栓
蒲吉斌
王立平
ZHANG Renktm;CHENG Honghong;WU Yuebin;ZHOU Kaihe;FANG Yunhui;LIU Shuan;PU Jibin;WANG Liping(Department of Petrochemical and Energy Engineering,Zhejiang Ocean University,Zhoushan 316022,China;State Grid Zhejiang Electric Power Corporation Ningbo Power Supply Company,Ningbo 315201,China;Key Laboratory of Marine Materials and Related Technologies,Zhejiang Key Laboratory of Marine Materials and Protective Technologies,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2018年第6期585-593,共9页
Corrosion Science and Protection Technology
基金
中国科学院先导专项(XDA13040601)
国家自然科学基金(41506098)
国网浙江省电力公司科学技术项目(5211NB16000F)~~
关键词
输电铁塔
镀锌钢
电化学腐蚀
电化学阻抗谱
transmission tower
galvanized steel
electrochemical corrosion
electrochemicalimpedance spectroscopy
