Electrochemical and thermodynamic studies to evaluate inhibition effect of 2-[(4-phenoxy-phenylimino)methyl]-phenol in 1M HCl on mild steel

A new corrosion inhibitor for protection of low carbon steel in HCl solution

“…Zheng et al [21] stated that the loop at the high frequency region can be attributed the resistance of faradaic process, whereas the one at lower frequency range assignable to the resistance of the adsorbed inhibitor molecules. Similar explanations have been reported in literature [15,22,23]. In Fig.5 it is seen that the impedance diagrams look like a flattened semicircle, a typical behaviour for solid electrodes that observed in scattered impedance data [24][25][26][27] The EIS data were fitted to the most probable equivalent circuit for modelling metal/solution interface; therefore two types of equivalent circuits have been proposed (Fig.6).…”

A comparative study of the corrosion inhibition of low carbon steel in HCl solution by an imine compound and its cobalt complex

“…The adsorption may take place through electrostatic interactions between the negatively charged metal surface (chloride bridges) and positively charged molecule. The inhibitor molecule may be protonated through the imine group (-C=N + <) hence adsorption to negative side become easier [17]. Mallaiya et al [ 54 ] have reported the adsorption of unprotonated form of imine compounds that may take place via donor-acceptor interactions between  electrons of >C=N-group and benzene ring and lone pair of electrons on atoms present in the imine compound and the vacant d orbital of the Fe atoms.…”

The effect of temperature and concentration on the inhibition of acid corrosion of carbon steel by newly synthesized Schiff base

“…A deviation from the ideal behavior could be attributed to stacking of the inhibitor molecules to OHP layer randomly because of big structure of the molecule [48]. It is clear from the M a n u s c r i p t Figure 4 that Nyquist diagrams of carbon steel in solutions including ALS at higher concentrations have depressed semicircles.…”