Schiff bases of increasing complexity as mild steel corrosion inhibitors in 2 M HCl

Kustu C., EMREGÜL K. C., Atakol O.

CORROSION SCIENCE, cilt.49, sa.7, ss.2800-2814, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 49 Sayı: 7
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.corsci.2007.02.002
  • Dergi Adı: CORROSION SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2800-2814
  • Anahtar Kelimeler: mild steel, EIS, polarization, acid inhibition, ELECTROCHEMICAL-BEHAVIOR, IRON, COPPER
  • Ankara Üniversitesi Adresli: Evet

Özet

The effect of three Schiff base compounds with increasing number of coordination sites, namely, 2-{(E)-[(2-hydroxyethyl)imino]methyl} phenol (1), 2-[(E)-({2-[(2-hydroxyethyl) amino]ethyl}imino) methyl]phenol (II) and 2,2'-{iminobis[ethane-2,1-diylnitrilo(E)methylylidene]}diphenol (III) have 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. (C) 2007 Elsevier Ltd. All rights reserved.