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Anticorrosion Performance Of Smart Release Bionanocomposite Coatings On Aluminium Alloy 6061

Anticorrosion Performance of Smart Release Bionanocomposite Coatings on Aluminium Alloy 6061
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Coatings for metal protection is a very broad area of research and no single formulation technique is used. Generally, coatings contain micropores, areas of low cross-link density or high pigment volume concentration that provides a diffusion path for corrosive species such as water, oxygen and chloride ions to the coating/metal interface. Therefore, incorporating corrosion inhibitors into a coating system is a basic step required for corrosion protection [1]. Direct addition of corrosion inhibitors has almost always resulted in undesirable leaching of inhibiting molecules and subsequent reactions with the coating matrix. This reduces the effect and duration required to protect the substrate in the aggressive environment. The encapsulation of corrosion inhibitors into a host material as using nanocontainers is an effective delivery system of the corrosion inhibitor in active corrosion protection application [2].

Product Number: 51322-18189-SG
Author: Sarah B. Ulaet, Jerin K. Pancrecious, Gincy Marina Mathew, T.P.D. Rajan
Publication Date: 2022
Industries: Corrosion Monitoring and Control , Coatings
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$20.00
$20.00

Protection and maintenance processes are very important in the various sectors utilizing metallic materials. Protection routes can either be passive or active depending on the components of the coating material. Active corrosion protection for metallic substrates is being widely explored with the use of smart release coatings delivering corrosion inhibitors to defective sites upon damage of protective coatings. The incorporation of modified additives into polymers such as epoxy resins offers robust solutions and aims at maximizing the materials’ compatibility for the fabrication of protective surfaces. The present investigation describes the contribution of neem phytochemicals as corrosion inhibitors loaded in biocompatible silica nanocontainers providing a protective primer to the corrosion process. The hybrid particles inside the organic matrix were pH-sensitive and the triggered release of encapsulated inhibitors was meant to provide a barrier in the coating defect from the aggressive corrosion-promoting environment. Crystallinity and morphology of the nanoparticles were characterized using XRD and TEM.

Protection and maintenance processes are very important in the various sectors utilizing metallic materials. Protection routes can either be passive or active depending on the components of the coating material. Active corrosion protection for metallic substrates is being widely explored with the use of smart release coatings delivering corrosion inhibitors to defective sites upon damage of protective coatings. The incorporation of modified additives into polymers such as epoxy resins offers robust solutions and aims at maximizing the materials’ compatibility for the fabrication of protective surfaces. The present investigation describes the contribution of neem phytochemicals as corrosion inhibitors loaded in biocompatible silica nanocontainers providing a protective primer to the corrosion process. The hybrid particles inside the organic matrix were pH-sensitive and the triggered release of encapsulated inhibitors was meant to provide a barrier in the coating defect from the aggressive corrosion-promoting environment. Crystallinity and morphology of the nanoparticles were characterized using XRD and TEM.

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