EIS and ENM as tools to evaluate inhibitive performance of second generation of phosphate-based anticorrosion pigments

被引:20
作者
Naderi, R. [1 ]
Attar, M. M. [1 ]
机构
[1] AmirKabir Univ Technol, Dept Polymer Engn, Tehran, Iran
关键词
Anticorrosion pigment; Electrochemical impedance spectroscopy; Electrochemical noise method; Surface analysis; ELECTROCHEMICAL NOISE; CORROSION-INHIBITORS; WATERBORNE COATINGS; ORGANIC COATINGS; STEEL; ZINC; CHROMATE; IMPEDANCE; BEHAVIOR; PAINT;
D O I
10.1007/s10800-009-9921-3
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The anticorrosion performance of zinc aluminum phosphate pigment was evaluated using electrochemical impedance spectroscopy, the electrochemical noise method and DC polarization. The results of the electrochemical tests revealed the superiority of zinc aluminum phosphate in comparison with zinc phosphate in terms of inhibitive characteristics. The trend and magnitude of resistances and current density plus the appearance of the impedance spectra and the power spectral density of the current noise indicated deposition of a layer on the surface of samples exposed to ZPA extract. SEM/EDX analysis confirmed the precipitation.
引用
收藏
页码:2353 / 2358
页数:6
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