Open AccessElectrochemical Synthesis, Characterization and Corrosion Properties of POA−MoO42- Coating in 3.5% NaCl
Author(s) -
Yeldana Bakhytzhan,
Akmaral Argimbayeva,
Gulmira Rakhymbay,
Raigul Jumanova,
Khaisa Avchukir,
B. D. Burkitbayeva
Publication year - 2020
Publication title -
eurasian chemico-technological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 9
eISSN - 2522-4867
pISSN - 1562-3920
DOI - 10.18321/ectj992
Subject(s) - corrosion , oxalic acid , molybdate , electrochemistry , coating , materials science , cyclic voltammetry , scanning electron microscope , polarization (electrochemistry) , aqueous solution , nuclear chemistry , chemical engineering , metallurgy , inorganic chemistry , chemistry , electrode , composite material , engineering
Polyanisidine (POA) and polyanisidine-molybdate (POA−MoO42-) 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 MoO42- 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-MoO42- films were studied using potentiodynamic polarization in 3.5% NaCl solution. The results showed that ions improve anti-corrosion properties of POA films.