Experimental and theoretical study of the inhibition effects of some Schiff bases as corrosion inhibitors of aluminium in HCl


Aytac A., Bilgic S., Gece G., Ancin N., Oztas S. G.

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, vol.63, no.8, pp.729-734, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 63 Issue: 8
  • Publication Date: 2012
  • Doi Number: 10.1002/maco.201106241
  • Journal Name: MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.729-734
  • Keywords: aluminium, corrosion inhibition, DFT, impedance, Schiff base, HYDROCHLORIC-ACID SOLUTION, DIMETHYLTIN(IV) COMPLEXES, MOLECULAR-STRUCTURE, SULFURIC-ACID, STEEL, MEDIA, METAL, DFT
  • Gazi University Affiliated: Yes

Abstract

The inhibition efficiencies of two new synthesized Schiff bases have been investigated for aluminium in 0.5?M HCl solution using experimental and theoretical methods. Potentiodynamic polarization and EIS method were used to determine the inhibition efficiencies. From the experimental results it has been found that both compounds adsorb on the aluminium surface according to the Temkin adsorption isotherm. Quantum chemical calculations were further applied to reveal the adsorption structure and explain the experimental results. A good correlation between the quantum chemical parameters and the experimental inhibition efficiency has been found.