Application of electrochemical impedance spectroscopy and surface analysis to the study of corrosion protection of carbon steels by phosphonates

被引：4

作者：

To, XT

Pébère, N

Pelaprat, N

Boutevin, B

Hervaud, Y

机构：

[1] ENSCT, CNRS, ESA 5071, Equipe Met Phys, F-31077 Toulouse 4, France

[2] ENSCM, Lab Chim Appl, CNRS, ESA 5076, F-34296 Montpellier, France

来源：

ELECTROCHEMICAL METHODS IN CORROSION RESEARCH VI, PTS 1 AND 2 | 1998年 / 289-2卷

关键词：

carbon steels; surface treatment; phosphonate; Ac impedance; surface analysis;

D O I：

10.4028/www.scientific.net/MSF.289-292.1193

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Surface treatments have been carried out on a carbon steel in solutions containing a monoacid phosphonate (ethyl octodecylphosphonate (EODP)) and a mixture of phosphates (methacryloxyethylphosphate (MOP)) bearing between one or two acid groups. Corrosion protection afforded by the compounds has been studied by steady-state current-voltage curves and electrochemical impedance measurements using a rotating disk electrode. High protection was obtained by the mixture 1 % MOP and 1 % EODP. Surface analyses (Raman and FTIR spectroscopies, XPS) indicate that the film was essentially the Fe(EODP)(2) complex. MOP plays a significant role at the interface by forming a thin oxide layer which improves the development and the adherence of the layer formed by EODP.

引用

页码：1193 / 1203

页数：11

共 12 条

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