Inhibition of Acidic Corrosion of Low Carbon Steel by Novel Synthesized Benzothiazole Derivatives

Authors : Evrim HUR, Gorkem VAROL, Kamuran GORGUN, Handan CAN SAKARYA

Pages : 699-707

View : 18 | Download : 6

Publication Date : 2011-12-16

Article Type : Other Papers

Abstract :Two novel benzothiazole derivatives insert ignore into journalissuearticles values(2-[insert ignore into journalissuearticles values(1,3-benzothiazol-2-ylamino);methyl]-1-naphthol insert ignore into journalissuearticles values(1); and 2-{[insert ignore into journalissuearticles values(6-methyl-1,3-benzothiazol-2-yl);amino]methyl}-1-naphthol); insert ignore into journalissuearticles values(2); have been synthesized. The protecting effect of these compounds on low carbon steel insert ignore into journalissuearticles values(LCS); in 0.1M hydrochloric acid insert ignore into journalissuearticles values(HCl); solutions as corrosion media was investigated using potentiodynamic polarization technique, and electrochemical impedance spectroscopy insert ignore into journalissuearticles values(EIS);. The potentiodynamic polarization curves indicate that investigated benzothiazole derivatives were acting as anodic inhibitor. The inhibitive action of inhibitor molecules may be interpreted in view of their adsorption on the LCS surface. The adsorptions of benzothiazole derivatives on metal surface in 0.1M HCl solution were found to obey Temkin adsorption isotherm. Thermodynamic parameters of adsorption insert ignore into journalissuearticles values(Kads, D Gads); of investigated inhibitors were calculated using Temkin adsorption isotherm.   Key Words : Benzothiazole, corrosion, steel, inhibitor.  
Keywords : Benzothiazole, corrosion, steel, inhibitor