期刊
CORROSION SCIENCE
卷 52, 期 11, 页码 3803-3810出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.07.033
关键词
Aluminium; Atmospheric corrosion; Copper; Polymer coatings
资金
- Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
In this study, we examined how aluminium corrosion in Al-Cu/PANI galvanic couples in a marine environment is influenced by deposition of polyaniline (PANI) on copper. Polarization curves and immersion assays in 0.1 M NaCl were performed. The morphologies of etched Al and corrosion products were observed by SEM, and the Al ions in solution were quantified by atomic absorption spectroscopy. A reduction in aluminium damage due to galvanic corrosion was observed as a result of decreased effective area for the oxygen reduction reaction on Cu/PANI electrode. Furthermore, an electrochemical reduction of PANI from leucoemeraldine to emeraldine base is proposed. (C) 2010 Elsevier Ltd. All rights reserved.
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