الفهرس 
Modified film layer with nanoparticles for corrosion inhibition of aluminum-magnesium alloys in acid solution containing chloride ions
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Abstract
Titanium oxide nanoparticles have been used to improve the active corrosion protective properties to hybrid sol-gel coatings on AA2024-T3 in 3.5% NaCl/ 0.5 M H2SO4 solutions. The coating was prepared using tetra-ethyl-orthosilicate (TEOS), phenyl-trimethoxy-silane (PTEOS), ethanol and titanium (IV) butoxide, as a source of titania nanoparticles. The morphology of the coatings was analyzed using scanning electron microscope (SEM). The protective nature of the coating was evaluated using Tafel and electrochemical impedance spectroscopy (EIS) measurements. The results indicate that the modification of the sol-gel coating with titanium oxide nanoparticles increases its corrosion resistance. On one hand the insulating and non-permeable nature of the coating results in slower rate of electrolyte penetration to the underlining of the coating. On the other hand, the presence of titanium allows the modification of the sol-gel structure that ended with a high cross-link structure