Effect of different additives, temperature, and immersion time on the inhibition behavior of L-valine for mild steel corrosion in 5% HCl solution

Theoretical and electrochemical evaluation of tetra-cationic surfactant as corrosion inhibitor for carbon steel in 1 M HCl

“…4 and 5 exhibit corrosion behaviour of CS-metal in destructive free acidic HCl solution and with CS4 inhibitor at room temperature. It can see that the diameter of semicircle increases as concentration of CS4 compound increase which can be explained as number of adsorbed molecules on CS-metal surface increase and more surface coverage of CS4 on CS-metal through adsorption process which verifies that corrosion behaviour is controlled and affected by R ct (charge transfer resistance) 16,29 . No change in Nyquist diagram in absence and presence of CS4 indicating that the corrosion mechanism of CS-metal not affected by the addition of CS4 compound and controlled by R ct 30,31 .…”

“…This denotes that, shielding of CS-metal from corrosive solution and greater blocking of the active sites at CS-metal surface by CS4 compound 40,41 . R ct value increase and reached 138.3 Ω.cm 2 and 681.4 Ω.cm 2 in presence of 1 ppm and 50 ppm of CS4 compound respectively, compared to R ct of free acid solution 38.605 Ω.cm 2 indicating that strongly shield of CS-metal by adsorbed CS4 molecules from destructive action of HCl species and formation of barrier layer between CS-metal and corrosive media 15,29 . The surface coverage (θ) and the inhibition efficiency (η) values were calculated based on R ct values according to equation:…”

Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations

“…DFT studies help in considering the mode of the inhibitory effect of corrosion compounds; hence, they are extensively used in corrosion research [ 22 , 59 ]. Utilizing these computational methods is essential for comprehending the association between molecular structures and protection capabilities [ 60 ]. DFT simulations have recently been carried out to determine the adsorption mechanism based on the inhibitor molecule’s structure, the metal, and the aggressive medium [ 61 , 62 ].…”

Co3O4 quantum dot decorated polypyrrole nanocomposites as a flexible, conducting, anticorrosive and antibacterial agent: sustainable experimental and theoretical approach

“…The inhibition efficiency (IE) to prevent corrosion was found using CR (blank) and CR (inhibitor) . 25,26 The electrochemical polarization experiments were carried out using a PGSTAT 128N Autolab Potentiostat/Galvanostat. The Nova 1.2 soware was used to run the electrochemical polarization experiments in anodic and cathodic directions.…”