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Sildenafil citrate (Viagra) as a corrosion inhibitor for carbon steel in hydrochloric acid solutions
Monatshefte für Chemie-Chemical Monthly • 2012
Publication Information
Authors
M Sobhi, M Abdallah, KS Khairou
Keywords
Not Available
Journal
Monatshefte für Chemie-Chemical Monthly
Publisher
Not Available
Volume
143
Issue
Not Available
Pages
Not Available
publication.type
International
Paper Link
Not Available
Supplementary Materials
Not Available
Abstract
The inhibition effect of sildenafil citrate (Viagra) on the corrosion of carbon steel in 1
M HCl was studied by weight loss, polarization, electrochemical impedance spectroscopy,
and UV–Vis spectrophotometry. The results showed that sildenafil citrate is a good corrosion
inhibitor for carbon steel in acidic media and acts as mixed type (cathodic/anodic) inhibitor.
The adsorption of the inhibitor was well described by the Langmuir adsorption isotherm.
Some thermodynamic parameters such as adsorption heat, adsorption entropy, and ...
M HCl was studied by weight loss, polarization, electrochemical impedance spectroscopy,
and UV–Vis spectrophotometry. The results showed that sildenafil citrate is a good corrosion
inhibitor for carbon steel in acidic media and acts as mixed type (cathodic/anodic) inhibitor.
The adsorption of the inhibitor was well described by the Langmuir adsorption isotherm.
Some thermodynamic parameters such as adsorption heat, adsorption entropy, and ...