The influence of polyaniline (PANI) coating on corrosion behaviour of zinc-cobalt coated carbon steel electrode
Yükleniyor...
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Zinc-cobalt alloy plating (ZnCo) was successfully deposited on carbon steel (CS) applying current of 2 mA with galvanostatic technique. Polyaniline film (PANI) was synthesized with cyclic voltammetry technique from 0.20 M aniline containing 0.20 M sodium tartrate solution on zinc-cobalt plated carbon steel (CS/ZnCo) electrode. PANI film characterized by scanning electron microscopy (SEM), was covered with a dark green-brown homopolymer film of strongly adherent homogeneous characteristic while the other one was plated with a porous light ZnCo one. The corrosion behaviour of zinc-cobalt deposited carbon steel electrodes with and without polyaniline (PANI) film in 3.5% NaCl solution was investigated with AC impedance spectroscopy (EIS) technique and anodic polarization curves. The results showed that PANI coating led to decrease of the permeability of metallic plating. The PANI homopolymer film provided an effective barrier property on zinc-cobalt coating and a remarkable anodic protection to substrate for longer exposure time. (C) 2012 Elsevier B.V. All rights reserved.
Açıklama
Paint and Coatings Industry, Raw Materials, Auxiliary Products Congress (Paintistanbul) -- SEP 14-15, 2012 -- Istanbul, TURKEY
Anahtar Kelimeler
Polyaniline, Metallic coating, Corrosion, EIS
Kaynak
Progress in Organic Coatings
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
76
Sayı
6
