DOAJ Open Access 2014

Novel Plant Extracts as Green Corrosion Inhibitors for 7075-T6 Aluminium Alloy in an Aqueous Medium

Howida A. Fetouh Tarek M. Abdel-Fattah Mohamed S. El-Tantawy

Abstrak

The effect of aqueous extracts of Damsissa, Lupine and Halfa-bar on the corrosion of 7075-T6 aluminium alloy in an aqueous solution of 0.5M sodium chloride has been studied employing electrochemical impedance spectroscopy and potentiodynamic polarization techniques. The impedance (Nyquist) plots manifested that the dissolution process is controlled by charge transfer from anodic to cathodic sites. The polarization curves showed that the three extracts act as cathodic inhibitors. Inhibitive mechanism was discussed assuming the adsorption of the three extracts on the electrode surface. Theoretical fitting of Langmuir, Flory-Huggins adsorption isotherms and the kinetic- thermodynamic model were tested to clarify the adsorption mechanism.

Topik & Kata Kunci

Industrial electrochemistry Physical and theoretical chemistry

Penulis (3)

Howida A. Fetouh

Tarek M. Abdel-Fattah

Mohamed S. El-Tantawy

Format Sitasi

APA MLA BibTeX

Fetouh, H.A., Abdel-Fattah, T.M., El-Tantawy, M.S. (2014). Novel Plant Extracts as Green Corrosion Inhibitors for 7075-T6 Aluminium Alloy in an Aqueous Medium. https://doi.org/10.1016/S1452-3981(23)07814-8

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Informasi Jurnal

Tahun Terbit: 2014
Sumber Database: DOAJ
DOI: 10.1016/S1452-3981(23)07814-8
Akses: Open Access ✓