三聚磷酸铝缓蚀性能的EIS研究(英文)  

Electrochemical Impedance Spectroscopy Studies on Inhibitive Performance of Aluminum Triphosphate Pigment

作　　者：廖永贵[1] 辜志俊[1] 张志刚[1] 郭琦龙[1] 苏方腾[1] 

机构地区：[1]中国科学院福建物质结构研究所,福建厦门361012

出　　处：《电化学》2001年第1期126-131,共6页Journal of Electrochemistry

基　　金：ProjectsupportedbyStateKeyLab .forPhys .Chem .ofSolidSurface (970 3)

摘　　要：利用电化学阻抗谱研究了方解石及三聚磷酸铝环氧涂层的耐蚀性能 ,并提出了它们的作用机理 .结果表明 ,方解石只起体质颜料作用 ,不具备缓蚀性能 ;而三聚磷酸铝因在钢基表面作用形成致密的保护膜则表现出优良的缓蚀性能 .The epoxy coatings on A3 steel sheets containing calcite or aluminum triphosphate (AlTP), were investigated by Electrochemical Impedance Spectroscopy (EIS). The results showed that calcite pigment is not an inhibitor, but an extender pigment, and that AlTP pigment can considerably enhance the protective performance of epoxy coating. The triphosphate ion at the interface between the steel substrate and the coating can complex with the corrosion product, such as ferric and ferrous ions, and form a compact protective film which effectively separates the steel substrate from the aggressive media.

关 键 词：三聚磷酸铝 缓蚀性能 电化学阻抗 有机涂层 钢 表面涂层 

分 类 号：TG174.3[金属学及工艺—金属表面处理]