Dibenzylidenecyclohexanone as a New Corrosion Inhibitor of Carbon Steel in 1 M HCl

The corrosion inhibition performance of 2,6-di((E)-benzylidene) cyclohexan-1-one (DBC) on carbon steel in 1 M HCl solution at 293–323 K temperature was investigated by weight loss measurements as chemical measurement and potentiodynamic polarization and electrochemical impedance spectroscopy as electrochemical ones. Studies indicate that the studied inhibitor is a mixed-type inhibitor. The inhibition efficiency increases with increasing their concentration reach a maximal corrosion inhibition efficiency 88%. The temperature effect revealed that the inhibitory molecule is chemisorbed on carbon steel. The adsorption of DBC on the carbon steel surface and adsorption process obeys the Langmuir isotherm. The mechanism of inhibition was investigated using the scanning electron microscopy, UV–visible and Fourier transform infrared spectroscopy assays.