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

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dc.contributor.author Fernández Álvarez, María
dc.contributor.author Velasco López, Francisco Javier
dc.contributor.author Bautista Arija, María Asunción
dc.date.accessioned 2021-02-10T09:26:59Z
dc.date.accessioned 2021-02-10T11:33:12Z
dc.date.available 2021-02-10T09:26:59Z
dc.date.issued 2020-05-15
dc.identifier.bibliographicCitation Wear, (2020), v.: 448–449, 203211.
dc.identifier.issn 0043-1648
dc.identifier.uri http://hdl.handle.net/10016/31893
dc.description.abstract The 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.
dc.description.sponsorship The 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.
dc.format.extent 10
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2020 Elsevier B.V. All rights reserved.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Epoxy powder coating
dc.subject.other Silica
dc.subject.other Nanoparticles
dc.subject.other Reciprocating wear
dc.subject.other Wear mechanism
dc.title Epoxy powder coatings hot mixed with nanoparticles to improve their abrasive wear
dc.type article
dc.description.status Publicado
dc.subject.eciencia Materiales
dc.identifier.doi https://doi.org/10.1016/j.wear.2020.203211
dc.rights.accessRights embargoedAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 203211
dc.identifier.publicationlastpage 10
dc.identifier.publicationtitle WEAR
dc.identifier.publicationvolume 448-449
dc.identifier.uxxi AR/0000025704
carlosiii.embargo.liftdate 2022-05-15
carlosiii.embargo.terms 2022-05-15
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