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

Teixeira, Deiver Alessandro [UNESP]; Valente Jr., Marco A. G. [UNESP]; Benedetti, Assis Vicente [UNESP]; Feliciano, Gustavo Troiano [UNESP]; Silva, Sebastião C. Da; Fugivara, Cecilio Sadao [UNESP]

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

Arquivos

S0103-50532015000300434.pdf (7.35 MB)

Data

2015-03-01

Autores

Teixeira, Deiver Alessandro

Valente Jr., Marco A. G.

Benedetti, Assis Vicente

Feliciano, Gustavo Troiano

Silva, Sebastião C. Da

Fugivara, Cecilio Sadao

Editor

Sociedade Brasileira de Química

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

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.