ANTI-CORROSIVE PROPERTIES OF SILICA NANOPARTICLES AND RARE EARTH SEALING ON ANODIZED ALUMINUM

The present study is aimed at investigating the electrochemical characteristics of aluminum alloy due to the deposition of SiO2 nanoparticles by electrophoretic deposition (EPD) inside a porous anodic aluminum oxide film (AAO) followed by sealing using cerium conversion coating technique. Treated aluminum exhibits improved surface morphology and higher corrosion resistance when subjected to 3.5% NaCl as evidenced by lower corrosion current density and higher polarization resistance.