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sjodeh's picture

Investigation of Corrosion Inhibition Behavior of C38 Steel in Hydrochloric Acid Solution ‎by 2-Hydroxy-1-(2-Hydroxy-4-Sulfo-1-Naphthylazo)-3-Naphthoic Acid

Journal Title, Volume, Page: 
Transactions of the Indian Institute of Metals
Year of Publication: 
2014
Authors: 
Shehdeh Jodeh
Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine
Current Affiliation: 
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Belkheir Hammouti
LCAE-URAC18, Faculté des Sciences, Université Mohammed Premier, BP 4808, Oujda, Morocco
Salem Selim Al-Deyab
Petrochemical Research Chair, Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
Omar Benali
Department of Biology, Faculty of Sciences, Saïda University, Saïda, Algeria
Rachid Salghi
Equipe de Génie de l’Environnement et de Biotechnologie, ENSA, Université Ibn Zohr, BP 1136, Agadir, Morocco
Laila Afia
Equipe de Génie de l’Environnement et de Biotechnologie, ENSA, Université Ibn Zohr, BP 1136, Agadir, Morocco
Preferred Abstract (Original): 

The corrosion inhibition properties of 2-hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid (HHSNNA) for C38 steel in HCl 1 M solution were analyzed by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and gravimetric methods. It was found that the presence of HHSNNA hugely decreases the corrosion rate, while its inhibition efficiency (E%) increases with concentration to attain 93.8 % at 10−3 M. The high inhibitory efficiency of HHSNNA was related with the adsorption of HHSNNA molecules at the metal/solution interface and a protective film formation. Adsorption behavior of the inhibitor on the surface followed the Langmuir adsorption isotherm. This compound is classified as the mixed type corrosion inhibitor with predominant control of the cathodic reaction. Data, obtained from EIS measurements, were analyzed to model the corrosion inhibition process through an appropriate equivalent circuit model.

warad's picture

Inhibitive Effect of Imidazopyridine Derivative Towards Corrosion of C38 Steel In Hydrochloric Acid Solution

Journal Title, Volume, Page: 
Research on Chemical Intermediates July 2013, Volume 39, Issue 6, pp 2369-2377
Year of Publication: 
2013
Authors: 
A. Ghazoui
LCAE-URAC18, Faculté des Sciences, Université Mohammed Premier, B.P. 717, 60000, Oujda, Morocco
R. Saddik
LCAE-URAC18, Faculté des Sciences, Université Mohammed Premier, B.P. 717, 60000, Oujda, Morocco
B. Hammouti
LCAE-URAC18, Faculté des Sciences, Université Mohammed Premier, B.P. 717, 60000, Oujda, Morocco
A. Zarrouk
LCAE-URAC18, Faculté des Sciences, Université Mohammed Premier, B.P. 717, 60000, Oujda, Morocco
N. Benchat
LCAE-URAC18, Faculté des Sciences, Université Mohammed Premier, B.P. 717, 60000, Oujda, Morocco
M. Guenbour
Laboratoire d’Electrochimie, Corrosion et Environnement, Faculté des Sciences, Université Mohammed V, Rabat, Morocco
S. S. Al-Deyab
Petrochemical Research Chair, Chemistry Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
I. Warad
Petrochemical Research Chair, Chemistry Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
Current Affiliation: 
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 
The effect of adding 2-phenylimidazo[1,2-a]pyridine-3-carbaldehyde derivative named (P2), newly synthesized on the electrochemical behavior of C38 steel in molar hydrochloric acid was investigated by using the weight-loss method, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) measurements. EIS results show that the transfer resistance increases with the increase of concentration of P2 and it also had an inhibiting effect on C38 steel corrosion in HCl solutions. Weight-loss essays confirm that the corrosion rate decreases as the P2 concentration increases. The inhibition efficiency for this compound studied increased with the increase in the inhibitor concentrations to attain 91.7 % at the 10−3 M of P2. The potentiodynamic polarization curves indicated that P2 acted as a mixed-type inhibitor in hydrochloric acid.
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