Paper
Corrosion Inhibition of Carbon Steel by Cationic Surfactants in 0.5 M HCl Solution
- Authors:
- A.S. Fouda; Y.A. Elewady; H.K. Abd El-Aziz
- Abstract
- The corrosion inhibition effect of cationic surfactants, namely cetyl trimethyl ammonium bromide: CTAB and dodecyl trimethyl ammonium chloride: DTAC, have been used as corrosion inhibitors for 1037 C-steel in 0.5 M HCl. The inhibition efficiency has been determined by weight loss and electrochemical measurements. The results show that the order of inhibition efficiency is CTAB > DTAC. Polarization curves indicate that all investigated surfactants are mixed inhibitors. Adsorption of these surfactants was in agreement with the Langmuir adsorption isotherm. The density function theory (DFT) was used to study the structural properties of the surfactants. The inhibition efficiencies of cationic surfactants showed a certain relationship to Pearson HSAB principle and Fukui indices.
- Keywords
- Carbon Steel; Electrochemical Calculations; DFT; Acid Corrosion
- StartPage
- 45
- EndPage
- 53
- Doi