Evaluation of the properties of nanoclay/ ZnFe2O4 as epoxy coating of 3105 aluminium

The interest in magnetic nanoparticles and nanocomposites has greatly increased in recent years because of their broad applications in several technological fields and their relevance from the point offundamental physics [1–3]. Nanoclay is one of the most affordable materials that have shown promisingresults in polymers. In recent years, epoxy/ clay nanocomposites have been noticed in coating due to their excellent properties, such as high-dimensional stability, reduced permeability and enhanced mechanicalproperties [4].The present findings support the significance of epoxy nanocomposites in the protection of alumium and its alloys by nanoclay/ ZnFe2O4 nanopowder. In this work, Crystalline ZnFe2O4 nanoparticles were prepared via sol-gel method. Furthermore, nanoclay/ ZnFe2O4 nanopowder were successfully synthesized by doping method. Then, epoxy-based nanocomposite coatings were applied to the synthesis of a series ofnanoclay/ ZnFe2O4 nanopowder (Below 1%wt nano clay) in a wide range of compositions. Therefore, theepoxy nanocomposite coatings with various contents of nanoclay/ ZnFe2O4 nanoparticles were coated on the surface of an AA3105 aluminum specimen. X-ray diffraction (XRD) technique and ultraviolet–visible spectroscopy and Fourier transform infrared spectroscopy were used to investigate the structuralproperties of the samples. The morphology and composition of the films were probed by FE-SEM, EDS. The effects of addition of nanopowder on the corrosion resistance of the coating were studied by an electrochemical technique (potentiodynamic polarization and electrochemical impedance spectroscopy(EIS)). Impedance and Potentiodynamic polarization testing results, evidenced the improvement of thecorrosion protection properties of the coatings in the presence of the formulations with superior anticorrosion of EF90.

کلیدواژه ها:

Magnetic Nanoparticles ، Epoxy Nanocomposites ، X-Ray Diffraction ، EIS ، Polarization