The Inhibitive Action of Some Diazole Derivatives on the Corrosion of 304 Stainless Steel in HCl Solution
- Authors: Fouda A.S.1, El-Morsy M.A.1, El-Barbary A.A.1, Lamloum L.E.1
- 
							Affiliations: 
							- Department of Chemistry, Faculty of Science
 
- Issue: Vol 55, No 1 (2019)
- Pages: 97-108
- Section: Article
- URL: https://journals.rcsi.science/1068-3755/article/view/231082
- DOI: https://doi.org/10.3103/S1068375519010083
- ID: 231082
Cite item
Abstract
The effect of the addition of some diazole derivatives on the corrosion of stainless steel 304 (SS 304) in hydrochloric acid (HCl) was investigated using such methods as weight loss (WL), potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) measurements. The inhibition efficiency (% IE) increases with increasing the inhibitor concentration, but decreases with increasing the temperature. The studied compounds are adsorbed chemically on the SS 304 surface following the Langmuir adsorption isotherm. Potentiodynamic polarization studies showed that those compounds are mixed type inhibitors. The quantum chemical calculation was applied to elucidate the adsorption mode of the inhibitor molecule onto the SS 304 surface. The results obtained from different techniques are in good agreement.
About the authors
A. S. Fouda
Department of Chemistry, Faculty of Science
							Author for correspondence.
							Email: asfouda@hotmail.com
				                					                																			                												                	Egypt, 							Mansoura, 35516						
M. A. El-Morsy
Department of Chemistry, Faculty of Science
														Email: asfouda@hotmail.com
				                					                																			                												                	Egypt, 							Tanta						
A. A. El-Barbary
Department of Chemistry, Faculty of Science
														Email: asfouda@hotmail.com
				                					                																			                												                	Egypt, 							Tanta						
L. E. Lamloum
Department of Chemistry, Faculty of Science
														Email: asfouda@hotmail.com
				                					                																			                												                	Egypt, 							Mansoura, 35516						
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