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Authors: DIANA BLEJAN, DANIEL MARCONI, AUREL POP, LIANA MARIA MUREȘAN.
Composite Zn-Ni coatings incorporating TiO2 nanoparticles were obtained by electrodeposition on steel from alkaline solution containing triethanolamine (TEA) as complexing agent for Ni2+ and polyethyleneglicol (PEG) in combination with vanillin, as leveling/brightening agents. The influence of TiO2 nanoparticles on phase composition and structure of Zn- Ni coatings were investigated by X-ray diffraction and SEM-EDAX methods. By using polarization measurements, the corrosion behaviour of the nanocomposite coatings was examined and the corrosion process on Zn-Ni-TiO2 composite coatings was found to be slower than on pure Zn-Ni surface.
Keywords: Corrosion; Electrodeposition; Zinc-Nickel alloy; alkaline electrolyte
