Synthesis, Characterization and Electrochemical Studies on the Corrosion Inhibition Properties of Schiff Bases for Mild Steel in 1 M HCl Solution

Schiff bases (SBL1 and SBL2), non-toxic compounds were synthesized, characterized investigated as alternative anticorrosive additives for inhibition of mild steel corrosion in I M HCl acid medium. Corrosion the was monitored by Potentiodynamic Polarization (PDP), Linear Resistance (LPR), Electrochemical Impedance Spectroscopy (EIS) Weight Loss (WL) techniques. The novel base ligands obtained Ultraviolet-visible Fourier-Transform Infrared Spectroscopy. elemental analysis data used to confirm formula SBL1 C17H20N2O2 SBL2 C24H21N5O2. spectroscopy suggest that formation a complex film on surface due adsorption SBL2. process spontaneous consistent with mechanism physical best approximated Langmuir isotherm. Maximum efficiency at maximum concentration 100 ppm both possessing higher (86.21%) more than (76.92%). Effectiveness reduced increase time progressed PDP measurements showed acted mixed type inhibitor. EIS measurement reveals controlled charge transfer process. Values efficacy from different techniques comparable. SEM micrographs indicated good protection