Electrochemical synthesis of poly (aniline-coo-anisidine) coatings on brass: Corrosion protection properties

ÖZYILMAZ A. T., ÖZYILMAZ G., Çolak N.

Corrosion Engineering Science and Technology, cilt.44, sa.1, ss.12-19, 2009 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44 Sayı: 1
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1179/174327807x234697
  • Dergi Adı: Corrosion Engineering Science and Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.12-19
  • Anahtar Kelimeler: Brass, Copolymers, Corrosion, Electrochemical impedance spectroscopy
  • Hatay Mustafa Kemal Üniversitesi Adresli: Evet

Özet

Poly (aniline-co-o-anisidine) films were coated on Cu-40% brass electrodes using cyclic voltammetric conditions in a sodium oxalate solution with 0-06M aniline and 0-06M o-anisidine monomers at applied scan rates of 20 and 50 mV s-1. Using this procedure, the surface of the electrodes was clearly covered with a black copolymer layer of strongly adherent homogeneous characteristics. In order to evaluate the corrosion performance of copolymer coated (CuZn/PANIco-POA) and uncoated electrodes in 3?5%NaCl, AC electrochemical impedance spectroscopy, anodic polarisation plots and open circuit potential-time curves were used. The copolymer films exhibited significant protection efficiency against the attack of corrosive agents and reduced drastically the corrosion rate of the brass. © 2009 Institute of Materials, Minerals and Mining.