Experimental and Theoretical Studies of Volatile Corrosion Inhibitors Adsorption on Zinc Electrode

• Autor(a) principal: Teixeira,Deiver A.
• Data de Publicação: 2015
• Outros Autores: Valente Jr.,Marco A. G., Benedetti,Assis V., Feliciano,Gustavo T., Silva,Sebastião C. da, Fugivara,Cecílio S.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of the Brazilian Chemical Society (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000300434
• topic: volatile corrosion inhibitors; density functional theory; electrochemical impedance spectroscopy; wet test chamber

This study evaluates the interaction of volatile corrosion inhibitors (VCIs) of the amino group with the zinc or zinc oxide surface by means of computational calculations using density functional theory (DFT) and comparing with experimental methods such as electrochemical impedance spectroscopy (EIS) and wet chamber tests. The application of these methods allowed indicating the most promising VCI and understanding its mechanism of action. Thus, after the vaporization of VCI molecules, they condense on the surface and form a protective film or a film with oxidizing characteristic, thereby preventing the corrosive action of the chemical species present in the environment.