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

HÜR E., Varol G. A., GÖRGÜN K., CAN SAKARYA H.

GAZI UNIVERSITY JOURNAL OF SCIENCE, cilt.24, sa.4, ss.699-707, 2011 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 4
  • Basım Tarihi: 2011
  • Dergi Adı: GAZI UNIVERSITY JOURNAL OF SCIENCE
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.699-707
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Two novel benzothiazole derivatives (2-[(1,3-benzothiazol-2-ylamino) methyl]-1-naphthol (1) and 2-{[(6methyl- 1,3-benzothiazol-2-yl) amino] methyl}-1-naphthol) (2) have been synthesized. The protecting effect of these compounds on low carbon steel (LCS) in 0.1M hydrochloric acid (HCl) solutions as corrosion media was investigated using potentiodynamic polarization technique, and electrochemical impedance spectroscopy (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 (Kads,.Gads) of investigated inhibitors were calculated using Temkin adsorption isotherm.