| publication name | Sildenafil citrate (Viagra) as a corrosion inhibitor for carbon steel in hydrochloric acid solutions |
|---|---|
| Authors | M Sobhi, M Abdallah, KS Khairou |
| year | 2012 |
| keywords | |
| journal | Monatshefte für Chemie-Chemical Monthly |
| volume | 143 |
| issue | Not Available |
| pages | Not Available |
| publisher | Not Available |
| Local/International | International |
| Paper Link | Not Available |
| Full paper | download |
| 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 ...