Synthesis, structural analysis and corrosion inhibition application of a new indazole derivative on mild steel surface in acidic media complemented with DFT and MD studies

Author(s):  
Mohammed Boulhaoua ◽  
Mohamed El Hafi ◽  
Saman Zehra ◽  
Larbi Eddaif ◽  
Awad A. Alrashdi ◽  
...  
2018 ◽  
Vol 8 ◽  
pp. 1178-1184 ◽  
Author(s):  
Shaimaa B. Al-Baghdadi ◽  
Fanar G. Hashim ◽  
Ahmed Q. Salam ◽  
Talib K. Abed ◽  
Tayser Sumer Gaaz ◽  
...  

RSC Advances ◽  
2015 ◽  
Vol 5 (16) ◽  
pp. 11697-11713 ◽  
Author(s):  
Ali Yousefi ◽  
Soheila Javadian ◽  
Nima Dalir ◽  
Jamal Kakemam ◽  
Jafar Akbari

Surface interaction and corrosion processes of imidazolium-based ionic liquids and their mixtures with SDS on a mild steel surface.


2011 ◽  
Vol 8 (2) ◽  
pp. 621-628 ◽  
Author(s):  
M. Anwar Sathiq ◽  
A. Jamal Abdul Nasser ◽  
P. Mohamed Sirajudeen

The influence ofN-(l-morpholinobenzyl)urea (MBU) on corrosion inhibition of mild steel in 1 M HCl was studied by weight loss, effect of temperature, potentiodynamic polarization and electrochemical impedance spectroscopy. The experimental results showed that the inhibition efficiency increases with increasing of MBU concentrations but decreases with increasing temperatures. The adsorption of MBU on the mild steel surface obeyed the Temkin’s adsorption isotherm. Potentiodynamic polarization curves showed that MBU acted as a cathodic inhibitor predominantly in hydrochloric acid. This was supported by the impedance measurements which showed a change in the charge transfer resistance and double layer capacitance indicating adsorption of MBU on the mild steel surface. Protective film formation against the acid attack is confirmed by SEM.


2015 ◽  
Vol 17 (8) ◽  
pp. 5679-5690 ◽  
Author(s):  
Sourav Kr. Saha ◽  
Alokdut Dutta ◽  
Pritam Ghosh ◽  
Dipankar Sukul ◽  
Priyabrata Banerjee

On mild steel surface in 1 M HCl medium corrosion inhibition performances of three Schiff base inhibitors (L1, L2 and L3) are investigated both experimentally and theoretically (DFT and MD simulation studies).


Author(s):  
Fidelis Ebunta Abeng ◽  
Valentine Anadebe ◽  
Patience Yake Nkom ◽  
Enyinda Goodluck Kamalu ◽  
Kelechi J. Uwakwe

Interaction of metal surfaces with organic molecules has a significant role in corrosion inhibition of metals and alloys. More clarification, from both experimental and computa­tional view is needed in describing the application of inhibitors for protection of metal surfaces. In this study, the surface adsorption and corrosion inhibition behavior of metol­azone, a quinazoline derivative, on mild steel in 0.02, 0.04, 0.06, and 0.08 M HCl solutions were investigated. Weight loss, potentiodynamic polarization and electrochemical impe­dance spectroscopy techniques were used. The optimum inhibition efficiencies of 75, 82 and 83 % were found by these three techniques at the optimum inhibitor concentration of 500 mg/L and 303 K. Scanning electron microscopy (SEM) was used to confirm adsorption of quinazoline derivative on the surface of the mild steel. Computational simulations were additionally used to give insights into the interaction between quinazoline inhibitor and mild steel surface. Thermodynamic parameters of mild steel corrosion showed that quinazoline derivative functions as an effective anti-corrosive agent that slows down corrosion process. Potentiodynamic polarization results revealed a mixed-type inhibitor, while the result of the adsorption study suggests that adsorption of the inhibitor on the mild steel surface obeys the physical adsorption mechanism and follows Langmuir adsorption isotherm model.  


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