Electrochemical Studies of Thiosemicarbazone Derivative and Its Tin(IV) Complex as Corrosion Inhibitor for Mild Steel in 1 M Hydrochloric Acid

Abstract

The inhibitive effects of 2-acetylpyridine 4-ethyl-3-thiosemicarbazone (HAcETSc) and dichlorophenyltin(IV) 2-acetylpyridine 4-ethyl-3-thiosemicarbazone (Sn(HAcETSc)PhenCl2) for mild steel in 1 M HCl solution at different concentrations were investigated using electrochemical measurements and scanning electron microscopy analysis. The result of electrochemical measurement found that the inhibition efficiency increased with inhibitors’ concentration. Moreover, it was shown that that Sn(HAcETSc)PhenCl2 had a better inhibitive effect than HAcETSc.

Keywords

• 2-acetylpyridine
• thiosemicarbazone
• tin(IV) complex
• mild steel
• corrosion