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Nanosilicon dioxide/o-phenylenediamine hybrid composite as a modifier for steel paints |
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| Authors: | MA Hegazy MM Hefny AM Badawi MY Ahmed |
| Affiliation: | 1. Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt;2. Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt;3. Science and Technology Center of Excellence (STCE), Cairo, Egypt |
| Abstract: | Different amounts of the hybrid composite nano SiO2/o-phenylenediamine were added to a typical paint being used for protecting steel against corrosion to increase its protection efficiency. The nano features of the composite were confirmed by different electron microscopic investigations. It was found that the protection efficiency of the paint increased significantly as well as its adhesion to the steel surface increased. These conclusions had been inferred from both potentiodynamic polarization and electrochemical impedance spectroscopy techniques. To confirm the previous concept salt spray test and adhesion force measurements were carried out. The results were interpreted in terms of the filling properties of nano SiO2 and adsorption/hardening power of o-phenylenediamine. |
| Keywords: | Coating Nanocomposite TEM AFM EIS Salt spray |
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