4-Aminoantipyrine as an inhibitor of mild steel corrosion in HCl solution
Ibrahim, Magdy; S. S. ABD EL-REHIM; K. F. KHALED;
Abstract
4-aminoantipyrine (AAP) was tested as a corrosion inhibitor for mild steel in 2 M HCl solution using different techniques: weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results showed that AAP is an inhibitor for mild steel in this medium. The inhibition was assumed to occur via adsorption of the inhibitor molecule on the metal surface. In the 20 to 60 C temperature range, the AAP adsorption follows the Flory±Huggins isotherm and/or the El-Awady et al. kinetic-thermodynamic model. The
protection eficiency increases with increasing inhibitor concentration (in the range 10ÿ3±10ÿ2
M) but decreases with increasing temperature. The thermodynamic functions of dissolution and adsorption processes were calculated.
protection eficiency increases with increasing inhibitor concentration (in the range 10ÿ3±10ÿ2
M) but decreases with increasing temperature. The thermodynamic functions of dissolution and adsorption processes were calculated.
Other data
Title | 4-Aminoantipyrine as an inhibitor of mild steel corrosion in HCl solution | Authors | Ibrahim, Magdy ; S. S. ABD EL-REHIM ; K. F. KHALED | Keywords | 4-Aminoantipyrine, corrosion inhibition, hydrochloric acid solution, inhibitor, mild steel | Issue Date | 1999 | Publisher | Kluwer Academic Publishers | Journal | Journal of Applied Electrochemistry |
Attached Files
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
AAP inhibition.pdf | 132.39 kB | Adobe PDF | Request a copy |
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.