Experimental Evaluation for the Inhibition of Carbon Steel Corrosion in Salt and Acid Media by New Derivative of Quinolin-2-One

2021 ◽  
pp. 146-159
Author(s):  
Mustafa Alaa Mohammed ◽  
Rehab Majed Kubba
Keyword(s):  
Carbon Steel ◽  
Experimental Evaluation ◽  
Steel Corrosion ◽  
Acid Media

scholarly journals Adsorption and inhibition behavior of a novel Schiff base on carbon steel corrosion in acid media

2015 ◽  
Vol 24 (3) ◽  
pp. 307-315 ◽  
Author(s):  
Ahmed A. Farag ◽  
M.A. Migahed ◽  
A.M. Al-Sabagh
Keyword(s):  
Schiff Base ◽  
Carbon Steel ◽  
Steel Corrosion ◽  
Acid Media

scholarly journals Experimental Evaluation for the Inhibition of Carbon Steel Corrosion in Salt and Acid Media by New Derivative of Quinolin-2-One

2020 ◽  
pp. 1861-1873
Author(s):  
Mustafa Alaa Mohammed ◽  
Rehab Majed Kubba
Keyword(s):  
Carbon Steel ◽  
Inhibition Efficiency ◽  
Acidic Solution ◽  
Steel Corrosion ◽  
Acid Solutions ◽  
Acid Media ◽  
Langmuir Adsorption ◽  
Inhibition Ability ◽  
Percentage Inhibition Efficiency ◽  
Surface Changes

The inhibition ability of the new derivative (quinolin-2-one), namely (1-{[5-(2-Chloro-phenylazo)-2- hydroy-benzylidene]-amino}-4,7-dimethyl -6-nitro- 1H-quinolin-2-one (CPHAQ2O)) towards carbon steel corrosion in (3.5% NaCl) and (0.5M HCl) solutions were evaluated by potentiodynamic polarization at different inhibitor concentrations. Polarization curves showed that the evaluated compound acted as mixed inhibitors, and the adsorption of the evaluated inhibitor obeys the Langmuir adsorption isotherm in both salt and acid solutions. The results revealed that the percentage inhibition efficiency (%IE) in the salty solution (90.55%) is greater than that in the acidic solution (77.62%). The surface changes of the carbon steel and the film persistency of the inhibitor were studied using SEM (Scanning Electron Microscopy).

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