Electrochemical synthesis of polypyrrole on ferrous and non-ferrous metals from sweet aqueous electrolytic medium

被引:43
作者
Bazzaoui, M
Martins, JI
Reis, TC
Bazzaoui, EA
Nunes, MC
Martins, L
机构
[1] Univ Porto, Fac Engn, Dept Engn Quim, P-4200465 Oporto, Portugal
[2] Univ Mohammed 1, Dept Chim, Fac Sci, Oujda 60000, Morocco
[3] Univ Porto, Dept Electrotecn, Fac Engn, P-4200465 Oporto, Portugal
[4] Ctr Rech Publ Sante, Luxembourg, Luxembourg
关键词
polypyrrole; aluminum; iron; saccharin sodium; corrosion; aqueous medium;
D O I
10.1016/j.tsf.2005.04.001
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The electrodeposition of polypyrrole (PPy) on oxidizable metals such as aluminum and iron has been achieved in aqueous medium of saccharin and pyrrole. Scanning electron microscopy and X-ray photoelectron spectroscopy analysis reveal a good homogeneity of the obtained PPy film. The electrochemical synthesis of PPy coating has been achieved successfully under potentiodynamic, galvanostatic and potentiostatic techniques. The corrosion experiments performed in HCl show that the PPy coating increases the corrosion potential and decreases the corrosion current density. (c) 2005 Elsevier B.V All rights reserved.
引用
收藏
页码:155 / 159
页数:5
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