Corrosion study of hybrid sol–gel coatings containing boehmite nanoparticles loaded with cerium nitrate corrosion inhibitor |
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| Affiliation: | 1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, PR China;2. Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China;3. School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, PR China;1. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran;2. Surface Coatings and Corrosion Department, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, Iran;1. Materials Science Department, University of Mons, du Parc, 20, 7000 Mons, Belgium;2. Protective Coatings Laboratory, Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam;3. Materia Nova Research Center, Parc Initialis, Avenue Nicolas Copernic, 7000 Mons, Belgium |
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| Abstract: | To improve the corrosion protection of sol–gel derived hybrid silica/epoxy coatings containing boehmite nanoparticles, inorganic corrosion inhibitor was introduced into the coating via encapsulation in the nanoparticles. The morphology and chemical structure of the deposited films were studied by Scanning Electron Microscopy (SEM) and Fourier Transformed Infra-red Spectroscopy (FT-IR). The anticorrosion and self-healing properties of the coatings were evaluated by Electrochemical Impedance Spectroscopy (EIS). The high corrosion resistance performance of such coatings is due to the presence of encapsulated cerium nitrate corrosion inhibitor that can be released at the defects within the coating, hindering the corrosion reactions at defective sites. |
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