Task-specific ionic liquids as corrosion inhibitors on carbon steel in 0.5 M HCl solution: An experimental and theoretical study

Comparative Studies of the Corrosion Inhibition Efficacy of a Dicationic Monomer and Its Polymer against API X60 Steel Corrosion in Simulated Acidizing Fluid under Static and Hydrodynamic Conditions

“…As indicated by the calculated values of C dl ( Table 1 ), the corrosion mitigation is due to the adsorption of the inhibitor molecules that apparently blocked the steel surface active sites in the studied medium. 26 , 27 Furthermore, the corrosion potential ( E corr ) is slightly shifted toward a more noble potential in both Figure 4 a,b. The displacement is, however, more noticeable in Figure 4 b than in Figure 4 a.…”

“…Furthermore, increase in the concentrations of NDTHDC and poly-NDTHDC to 1000 and 100 mg/L, respectively, further raised the charge-transfer resistances to 137.3 and 388.1 Ω cm 2 and inhibition efficiencies to 57.10 and 84.82% but decreased the C dl values to 0.24 and 0.10 μF/cm 2 , respectively. This infers that the adsorption of the inhibitor molecules reduced the capacitance through the increase in the double-layer thickness ( , where ε 0 is the permittivity of air, ε is the local dielectric constant, d is the film thickness, and S is the electrode surface 26 ). It is also important to point out the smaller values of C dl in the systems inhibited with poly-NDTHDC than in systems protected with NDTHDC ( Table 1 ).…”

Impact of Degree of Hydrophilicity of Pyridinium Bromide Derivatives on HCl Pickling of X-60 Mild Steel: Experimental and Theoretical Evaluations

“…Considerations of these features of corrosion inhibitors have led to the evaluations of numerous biological materials for effective corrosion inhibitors [11][12][13][14][15][16][17][18] due to their non-toxicity and biodegradable properties. Furthermore, novel ionic liquids [19][20][21] and some eco-friendly organic compounds containing different forms of functional groups, heteroaryl, aromatics cycles, saturated and unsaturated bonds in their molecular structures [22][23][24][25][26][27] have been reported as effective corrosion inhibitors.…”

Inhibiting Effect of Ionic Liquids on the Corrosion of Mild Steel in H2S and HCl Solution

“…Ionic liquids (ILs) have been identified as green solvents with low melting point, negligible vapor pressure, excellent thermal stability, and high solubility [15][16][17]. Therefore, ILs received extensive attention as green corrosion inhibitors [18][19][20][21].…”