الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
In the current times, cold galvanizing technology is considered a vital paradigm for corrosion protection of steel petroleum structures. To uphold this approach, ilmenite nanoparticles (FeTiO3 NPs) were obtained with the average diameters of 20 nm by a direct solid-phase milling process and synthesized amorphous silica powder grains were processed to prepare novel fabricated Egyptian nanoilmenite/amorphous silica composite (ENI/AS) particles as anticorrosion and mechanical properties modifier for cold galvanizing coating. X-ray diffraction (XRD) analysis was implemented to assure the phase identification of the crystalline nanoilmenite and amorphous silica particles. Dynamic light scattering (DLS) measurements were accomplished to measure the size of nanoilmenite and amorphous silica particles in suspension. The nano features of nanoilmenite and ENI/AS particles were confirmed by transmission electron microscopy (TEM) investigation. Flaky-like nature of the nanocomposite and the spherical shape of Zn-dust particles were illustrated by scanning electron microscopy (SEM) micrographs. BET surface area measurements of these nanoparticles indicated that, their adsorption- desorption isotherms were of type II-H3 hysteresis isotherms. Different alkyd-based cold galvanizing coating formulations were prepared using various uniformly dispersing amounts of the processed ENI/AS particles to form some nanocomposite coatings applied on the carbon steel surface. Accelerated corrosion experiment (salt spray chamber) revealed a significant improvement in the anticorrosion behavior of nanocomposite modified cold galvanizing coated steel films compared to unmodified conventional coating. To confirm the previous concept, weight loss method was performed. The electrochemical behavior of nanocomposite modified cold galvanizing coated films against unmodified conventional coating in oil-wells formation water solution have been studied by both potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The mechanical properties of the coated films were studied through some coating tests as cross-cut adhesion, pull-off, bend, impact and abrasion to assert their application efficiency. The corrosion protection effect of the investigated modified nanocomposite coated film compared to unmodified conventional one on carbon steel surface in formation water solution was surveyed by scanning electron microscopy (SEM) and energy dispersive analysis of X-rays (EDX) techniques. The results of this consideration reinforced the abnormal corrosion protection properties of the ENI/AS modified cold galvanizing coating.