Protection of iron against corrosion using a polyaniline layer - III. Spectroscopic analysis of the mechanisms accompanying the breakdown

被引：19

作者：

Bernard, MC ^{[1
]}

Joiret, S ^{[1
]}

Hugot-Le Goff, A ^{[1
]}

Phong, PV ^{[1
]}

机构：

[1] UPMC, CNRS, UPR 15, F-75252 Paris 05, France

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2001年 / 148卷 / 08期

关键词：

D O I：

10.1149/1.1380672

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The protection of iron against corrosion brought by polyaniline (PANI) potentiostatically polymerized in phosphoric/metanilic solution is due to the combination of the passive layer and the polymer. The passive layer is strengthened by phosphate incorporation, and sulfonated aniline is inserted in the chain to yield a copolymer (SPAN). The potentiostatic polarization is partly responsible for the heterogeneity of polymer (block-polymer). Raman and optical spectroscopies are used to characterize the modifications in the PANI composition preceding and accompanying the passivity breakdown. The breakdown is associated with the loss of PANI reoxidability, but this step is preceded by slow modifications in the polaron distributions. (C) 2001 The Electrochemical Society.

引用

页码：B304 / B306

页数：3

共 9 条

[1] Protection of iron against corrosion using a polyaniline layer - II. Spectroscopic analysis of the layer grown in phosphoric/metanilic solution [J].