Zinc deposited polymer coatings for copper protection


Tuken T.

PROGRESS IN ORGANIC COATINGS, cilt.55, ss.60-65, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 55 Konu: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.porgcoat.2005.11.008
  • Dergi Adı: PROGRESS IN ORGANIC COATINGS
  • Sayfa Sayıları: ss.60-65

Özet

Polypyrrole (PPy) and polyaniline (PAni) coatings were electrosynthesized on copper, by using cyclic voltammetry technique, Then. these coatings were modified with the deposition of zinc particles from aqueous zinc sulphate solution, The electrodeposition of zinc was achieved at a constant potential value of - 1.20 V. in the amount of similar to 0.75 mg/cm(2). The corrosion performance of zinc modified polymer coatings were investigated in 3.5% NaCl solution: by using the electrochemical impedance spectroscopy (EIS), and anodic polarization curves, The zinc particles improved the barrier property of polymer films, thanks to formation of voluminous zinc corrosion product. within the pores of polymer coating, Also, the zinc particles provided cathodic protection to the substrate, where the poly mer film played the role of conductance between zinc particles and copper. (C) 2005 Elsevier B.V. All rights reserved.