The effect of thiourea on the corrosion kinetics of mild steel in H2SO4

Effect of Temperature on the Corrosion Inhibition of Trans-4-Hydroxy-4′-Stilbazole on Mild Steel in HCl Solution

“…The gain in entropy which accompanies the substitutional adsorption process is attributed to the increase in the solvent entropy (Table 6). This agrees with the general suggestion that the values of ΔG increase with the increase of inhibition efficiency [20,26] as the adsorption of organic compound is accompanied by desorption of water molecules off the surface. The electron density group (-OH) on the phenyl ring gives an extra inhibition effect.…”

“…These compounds included quaternary ammonium salts [3][4][5][6][7][8][9][10], polyamino-benzoquinone polymers [11], azoles [12][13][14][15][16][17][18][19], substituted aniline-N-salicylidenes [20], amides [21], heterocyclic compounds [22,23], and cationic surfactants [24,25]. Other authors worked on sulfur-containing inhibitors [26][27][28][29][30][31]. Other studies involved the effect of addition of some ions on the inhibition efficiency of some organic compounds.…”

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“…In recent years, there has been increasing interest in the electrochemical behaviour of thiourea (H 2 NHNCSH) and substituted thiourea at different metal electrodes due to their various structures and applications as additives for metal electrodeposition and its ability to inhibit the corrosion process [1][2][3] . The compounds have been reported to be catalysts for the electroreduction of cations such as zinc 4 or cadmium 5 .…”

Preparation and Characterization of Oligomer from Recycled PET and Evaluated as a Corrosion Inhibitor for C-Steel Material in 0.1 M HCl

“…The electrochemical processes on the metal surface which related to the adsorption of the inhibitor [30] and the adsorption depend on the chemical structure of the inhibitor. The adsorption of the inhibitor molecules from aqueous solutions can be regarded as quasi substitution process [31] [32] [33] between the organic compound in the aqueous phase and water molecules at the electrode surface. By examining the degree of surface coverage (θ) which determined by potentiodynamic polarization technique to various isotherms.…”