Polypyrrole Coating Doped with Dihydrogenophosphate Ion to Protect Aluminium Against Corrosion in Sodium Chloride Medium

• Type: Article in International Scientific Journal
• Date: 2012

Authors

José Inácio Martins (Author) FEUP; Diblikova, L (Author) Other; Bazzaoui, M (Author) Other; Nunes, MC (Author) Other

Journal

Title: Journal of the Brazilian Chemical Society

Vol. 23 No. 3

Pages: 377-384

ISSN: 0103-5053

Publisher: Sociedade Brasileira de Quimica

Indexing

ISI Web of Knowledge - 5 Citations

ISI Web of Science

Scopus - 6 Citations

Other information

Authenticus ID: P-002-CCZ

Abstract (EN): The electrodeposition of polypyrrole (PPy) on aluminium electrodes has been achieved in phosphoric acid medium by using potentiodynamic, potentiostatic and galvanostatic techniques. The corrosion behavior of polypyrrole on aluminium in sodium chloride medium has been investigated by open circuit potential and electrochemical impedance spectroscopy. A mechanism to explain the beneficial effect of PPy-doping dihydrogenophosphate ion in the passivation of aluminium is proposed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8