Corrosion inhibition of brass in presence of terdentate ligands in chloride solution

Asan A., Kabasakaloglu M., Isiklan M., Kilic Z.

CORROSION SCIENCE, vol.47, no.6, pp.1534-1544, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 6
  • Publication Date: 2005
  • Doi Number: 10.1016/j.corsci.2004.07.031
  • Journal Name: CORROSION SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1534-1544
  • Keywords: brass, potentiostatic polarization, neutral inhibition, terdentate ligands, SCHIFF-BASES, ACID CORROSION, SULFURIC-ACID, IRON, COPPER, BENZOTRIAZOLE, BEHAVIOR, STEEL, ZINC, NACL
  • Gazi University Affiliated: No

Abstract

The inhibition of two terdentate ligands, 2-[(E)-pyridin-2-ylimino)methyl)]phenol and 2-[(pyridin-2-ylamino)methyl]phenol, abbreviated L, and L, respectively, on the corrosion of brass in 0.10 M NaCl solution under various conditions, has been studied by means of the potentiostatic polarization and AC impedance methods. The studies show that terdentate ligands, L-1 and L-2 inhibit the corrosion of brass in chloride solution and that the inhibiting efficiency increases with an increase in their concentrations. Self-assembled films of these substances were also prepared on the brass surface. These films improved significantly the protecting ability of brass surface to corrosion in 0.10 M NaCl solution. When the films were modified with benzotriazole (BTA), the quality and corrosion resistance of films improved markedly. (c) 2004 Elsevier Ltd. All rights reserved.