Electrochemical Synthesis, Characterization and Corrosion Properties of POA−MoO42- Coating in 3.5% NaCl

Ye.G. Bakhytzhan; A.M. Argimbayeva; G.S. Rakhymbay; R.Dzh. Jumanova; Kh. Avchukir; B.D. Burkitbayeva

doi:10.18321/ectj992

Authors

Ye.G. Bakhytzhan Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty, Kazakhstan
A.M. Argimbayeva Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty, Kazakhstan
G.S. Rakhymbay Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty, Kazakhstan
R.Dzh. Jumanova Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty, Kazakhstan
Kh. Avchukir Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty, Kazakhstan
B.D. Burkitbayeva Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty, Kazakhstan

DOI:

https://doi.org/10.18321/ectj992

Abstract

Polyanisidine (POA) and polyanisidine-molybdate (POA−MoO₄^2-) coatings have been successfully synthesized on steel grade СТ3 from aqueous solutions of oxalic acid by electrochemical method using cyclic voltammetry. The morphology and composition of these films were characterized by scanning electron microscopy (SEM) and energydispersive X-ray (EDAX) methods. It was proven that the introduction of MoO₄^2- into the polyanisidine matrix raised the corrosion resistance of the POA coating and also improved its adhesion properties. The protective properties of steel grade CT3 with POA and POA-MoO₄^2- films were studied using potentiodynamic polarization in 3.5% NaCl solution. The results showed that ions improve anti-corrosion properties of POA films.

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