Corrosion protection of \AA2024\ by sol
By F. Maia and K.A. Yasakau and J. Carneiro and S. Kallip and J. Tedim and T. Henriques and A. Cabral and J. Ven
Published in Chemical Engineering Journal
NULL
2016
Abstract
In this work we report the synthesis of polyurea microcapsules loaded with corrosion inhibitor 2-mercaptobenzothiazole (MBT) for corrosion protection of 2024 aluminum alloy. The microcapsules were prepared by interfacial polycondensation. The resulting capsules exhibit spherical shape, with diameter ranging between 100 nm and 2 ?m. The loading content of \MBT\ was found to be 5 wt% and release studies showed that \MBT\ is preferentially released under acidic and alkaline conditions and follows a Fickian diffusion model. This pH dependency seems suitable for protection of metallic alloys where corrosion processes are accompanied by local pH changes. Furthermore, the microcapsules were added to a hybrid sol
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