The corrosion performance of polyaniline film modified on nickel plated copper in aqueous p-toluenesulfonic acid solution
Yükleniyor...
Tarih
2006
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Polyaniline (PANI) coatings were synthesised on 1 mu m Ni plated on copper (Cu/Ni). Polyaniline films were achieved under cyclic voltammetric conditions in 0.1 M aniline containing p-toluenesulfonic acid solution. Polyaniline coatings which indicated that the p-toluenesulfonic acid solution was a suitable medium for the formation and deposition of polyaniline on a Cu/Ni substrate. Electrochemical polymerization of polyaniline resulted in the deposition of uniform, compact and strongly adherent PANT coatings on Cu/Ni. Their corrosion protection performance in 3.5% NaCl was investigated by using the AC impedance spectroscopy (EIS) technique and anodic polarization curves, which showed that polyaniline coating exhibited a significant physical barrier property against the attack of corrosive products on nickel plated copper, for longer periods and drastically reduced the corrosion rate of copper. It was found out that the barrier properties of the polyaniline coating was improved by its catalytic behaviour on formation of freshly produced nickel oxide layers and the reduction of polymer film at metal/polymer interface. (c) 2005 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
impedance spectroscopy, plating, copper, multilayer
Kaynak
Surface & Coatings Technology
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
200
Sayı
12-13
