The application of some polydentate Schiff base compounds containing aminic nitrogens as corrosion inhibitors for mild steel in acidic media

EMREGÜL K. C., Duzgun E., Atakol O.

Corrosion Science, cilt.48, sa.10, ss.3243-3260, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 10
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.corsci.2005.11.016
  • Dergi Adı: Corrosion Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3243-3260
  • Anahtar Kelimeler: steel, corrosion, inhibition, polydentate Schiff base compounds, ELECTROCHEMICAL-BEHAVIOR, IRON, COPPER
  • Ankara Üniversitesi Adresli: Evet

Özet

The effect of three Schiff base compounds namely, (E)-2-(1-(2-(2-hydroxyethylamino)ethylimino)ethyl)phenol(I), 2,2′-(1E,1′E)-1,1′-(2,2′-azanediylbis(ethane-2,1-diyl)bis(azan-1-yl-1-ylidene))bis(ethan-1-yl-1-ylidene)diphenol(II) and 2,2′-((2E,12E)-3,6,9,12-tetraazatetradeca-2,12-diene-2,13-diyl)diphenol(III) on the corrosion behavior of steel in 2 M HCl solution has been investigated at 298 K by weight loss measurements, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The inhibition efficiencies obtained from all methods employed are in good agreement. Results show compound III to be the best inhibitor with a mean efficiency of 93% at 10-2 M additive concentration. Studies showed all three compounds to act as mixed type inhibitors and to obey the Langmuir adsorption isotherm. © 2006 Elsevier Ltd. All rights reserved.