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Microencapsulation of cerium and its application in sol-gel coatings for the corrosion protection of aluminum alloy AA2024

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Microencapsulation of cerium and its application in sol-gel coatings for the corrosion protection of aluminum alloy AA2024

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dc.contributor.author Valero-Gómez, A. es_ES
dc.contributor.author Molina Puerto, Javier es_ES
dc.contributor.author Pradas, S. es_ES
dc.contributor.author López-Tendero, M. J. es_ES
dc.contributor.author Bosch, F. es_ES
dc.date.accessioned 2021-02-19T04:34:29Z
dc.date.available 2021-02-19T04:34:29Z
dc.date.issued 2020-01 es_ES
dc.identifier.issn 0928-0707 es_ES
dc.identifier.uri http://hdl.handle.net/10251/161868
dc.description.abstract [EN] Cerium-containing microcapsules were obtained by means of water/oil (W/O) emulsion technology using tetraethyl orthosilicate (TEOS) as the precursor. Synthesis parameters as water/ethanol molar ratio, surfactant concentration, temperature, synthesis time, were optimized to obtain microcapsules with adequate form and size. Cerium salt is a corrosion inhibitor. Scanning electron microscopy (SEM) was employed to characterize the microcapsules and EDS and energy dispersive X-ray (EDX) microanalysis to assess encapsulation of cerium. The synthesized microcapsules were incorporated in the sol-gel coating that was sprayed on AA2024 aluminum alloy. The morphology of the sol-gel coating and the distribution of the microcapsules were investigated by SEM and EDX and the corrosion resistance of the coated samples was evaluated by electrochemical impedance spectroscopy (EIS) and open circuit potential measurements. Cerium microcapsules can act as Ce nanoreservoirs blocking defects produced in the organic-inorganic hybrid coating by precipitating Ce oxide/ hydroxide and nanoloads slowing the diffusion of redox species to the aluminum surface. Higher corrosion resistance was obtained with microencapsulation of cerium than with nonencapsulated cerium. es_ES
dc.description.sponsorship Authors wish to thank to the Instituto Valenciano de Competitividad Empresarial (IVACE) (project reference IMAMCC/2016/1) for the financial support. Electron Microscopy Service of the UPV (Universitat Politecnica de Valencia) is gratefully acknowledged for help with FESEM and EDX characterization. es_ES
dc.language Inglés es_ES
dc.publisher Springer-Verlag es_ES
dc.relation.ispartof Journal of Sol-Gel Science and Technology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Sol-gel es_ES
dc.subject Encapsulation es_ES
dc.subject Cerium es_ES
dc.subject Corrosion protection es_ES
dc.subject Aluminum es_ES
dc.subject Organic-inorganic hybrid coating es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title Microencapsulation of cerium and its application in sol-gel coatings for the corrosion protection of aluminum alloy AA2024 es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1007/s10971-019-05151-8 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/IVACE//IMAMCC%2F2016%2F1/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear es_ES
dc.description.bibliographicCitation Valero-Gómez, A.; Molina Puerto, J.; Pradas, S.; López-Tendero, MJ.; Bosch, F. (2020). Microencapsulation of cerium and its application in sol-gel coatings for the corrosion protection of aluminum alloy AA2024. Journal of Sol-Gel Science and Technology. 93(1):36-51. https://doi.org/10.1007/s10971-019-05151-8 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1007/s10971-019-05151-8 es_ES
dc.description.upvformatpinicio 36 es_ES
dc.description.upvformatpfin 51 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 93 es_ES
dc.description.issue 1 es_ES
dc.relation.pasarela S\413808 es_ES
dc.contributor.funder Institut Valencià de Competitivitat Empresarial es_ES
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