Banner

Sildenafil citrate (Viagra) as a corrosion inhibitor for carbon steel in hydrochloric acid solutions

Monatshefte für Chemie-Chemical Monthly • 2012
العودة
معلومات البحث
المؤلفون M Sobhi, M Abdallah, KS Khairou
الكلمات المفتاحية Not Available
المجلة العلمية Monatshefte für Chemie-Chemical Monthly
الناشر Not Available
المجلد 143
العدد Not Available
الصفحات Not Available
publication.type International
رابط البحث Not Available
المواد المرفقة Not Available
الملخص
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 ...