Corrosion study of hybrid sol–gel coatings containing boehmite nanoparticles loaded with cerium nitrate corrosion inhibitor

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 Sc...

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Published in:Progress in organic coatings 2010-12, Vol.69 (4), p.384-391
Main Authors: Tavandashti, N. Pirhady, Sanjabi, S.
Format: Article
Language:English
Subjects:
Cerium nitrate
Coatings
Corrosion
Corrosion inhibitors
Corrosion prevention
EIS
Electrochemical impedance spectroscopy
Inorganic coatings
Nanoparticles
Nanoreservoir
Protective coatings
Sol gel process
Sol–gel
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description 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.
doi_str_mv 10.1016/j.porgcoat.2010.07.012
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subjects Cerium nitrate
Coatings
Corrosion
Corrosion inhibitors
Corrosion prevention
EIS
Electrochemical impedance spectroscopy
Inorganic coatings
Nanoparticles
Nanoreservoir
Protective coatings
Sol gel process
Sol–gel
title Corrosion study of hybrid sol–gel coatings containing boehmite nanoparticles loaded with cerium nitrate corrosion inhibitor
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