Poly(N-methylpyrrole) electrodeposited on copper: Corrosion protection properties
| Autor: | M.V. Garcia, M.J. González-Tejera, M.I. Redondo, E. Sánchez de la Blanca |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Tafel equation
Materials science Aqueous solution General Chemical Engineering Organic Chemistry Inorganic chemistry chemistry.chemical_element Electrochemistry Polypyrrole Copper Surfaces Coatings and Films Dielectric spectroscopy Corrosion chemistry.chemical_compound chemistry Materials Chemistry Erosion corrosion of copper water tubes |
| Zdroj: | Progress in Organic Coatings. 65:386-391 |
| ISSN: | 0300-9440 |
| DOI: | 10.1016/j.porgcoat.2009.03.003 |
| Popis: | Electrochemical synthesis of poly(N-methylpyrrole) films on copper electrodes from an aqueous oxalic acid has been achieved. A potential higher than 2 V (SCE) was needed to generate the polymer, for this reason, the polymer was in the overoxidized state. The inhibiting corrosion properties of this coating on copper were investigated for the first time in aqueous 0.1 M sodium chloride solution using potentiodynamic polarization, Tafel analyses, open-circuit potential and electrochemical impedance spectroscopy. Corrosion protection properties comparable to those of polypyrrole (PPy) films were observed for these films. A physical barrier effect is the most likely protection mechanism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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