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Epoxy powder coatings hot mixed with nanoparticles to improve their abrasive wear

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Comportamiento en Servicio de Materialeses
dc.contributor.authorFernández Álvarez, María
dc.contributor.authorVelasco López, Francisco Javier
dc.contributor.authorBautista Arija, María Asunción
dc.date.accessioned2021-02-10T09:26:59Z
dc.date.accessioned2021-02-10T11:33:12Z
dc.date.available2022-05-15T23:00:05Z
dc.date.issued2020-05-15
dc.description.abstractThe wear resistance of organic coatings is a key factor in preserving their barrier effect against corrosion. In this research, epoxy-based powder coatings were loaded with different percentages of SiO2 nanoparticles (1, 2 and 3% by wt.) to improve their wear resistance. The innovative mixing method used to homogenize the nanoparticles in the matrix was a hot mixer. The modified organic powders were applied by electrostatic gun on carbon steel substrates. After curing, sliding wear tests were performed at 5 N using reciprocating wear equipment, and measuring the coefficient of friction (COF). The wear mechanism was analyzed and the width and the depth of each track were measured through scanning electron microscopy (SEM) and optoelectronic microscopy. Wear results were analyzed considering the increase in hardness and scratch resistance, and the decrease in ductility of the coating caused by the nanoparticles. As no wear track was found on 3% SiO2 containing coatings under this load due to its properties, it was decided to perform more tests at higher loads to delve further into its wear mechanisms. This coating withstands wear with very small damage under moderate loads, but starts to show abrasive wear and high COF when the load increases.en
dc.description.sponsorshipThe authors acknowledge Cubson International Consulting for their help with the coating process. This work was supported by Interreg SUDOE, through KrEaTive Habitat project, grant number SOE1/P1/E0307.en
dc.description.statusPublicadoes
dc.format.extent10
dc.identifier.bibliographicCitationWear, (2020), v.: 448–449, 203211.en
dc.identifier.doihttps://doi.org/10.1016/j.wear.2020.203211
dc.identifier.issn0043-1648
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue203211
dc.identifier.publicationlastpage10
dc.identifier.publicationtitleWEARen
dc.identifier.publicationvolume448-449
dc.identifier.urihttps://hdl.handle.net/10016/31893
dc.identifier.uxxiAR/0000025704
dc.language.isoengen
dc.publisherElsevieren
dc.rights© 2020 Elsevier B.V. All rights reserved.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.otherEpoxy powder coatingen
dc.subject.otherSilicaen
dc.subject.otherNanoparticlesen
dc.subject.otherReciprocating wearen
dc.subject.otherWear mechanismen
dc.titleEpoxy powder coatings hot mixed with nanoparticles to improve their abrasive wearen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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