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dc.contributor.authorMoreira, Vitor Bonamigopt_BR
dc.contributor.authorPuiggali Jou, Annapt_BR
dc.contributor.authorJimenez Pique, Emiliopt_BR
dc.contributor.authorAlemán, Carlospt_BR
dc.contributor.authorMeneguzzi, Alvaropt_BR
dc.contributor.authorArmelin, Elainept_BR
dc.date.accessioned2021-12-09T04:35:53Zpt_BR
dc.date.issued2021pt_BR
dc.identifier.issn1996-1944pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/232732pt_BR
dc.description.abstractHerein, the influence of the substrate in the formation of zirconium oxide monolayer, from an aqueous hexafluorozirconic acid solution, by chemical conversion and by electro-assisted deposition, has been approached. The nanoscale dimensions of the ZrO2 film is affected by the substrate nature and roughness. This study evidenced that the mechanism of Zr-EAD is dependent on the potential applied and on the substrate composition, whereas conversion coating is uniquely dependent on the adsorption reaction time. The zirconium oxide based nanofilms were more homogenous in AA2024 substrates if compared to pure Al grade (AA1100). It was justified by the high content of Cu alloying element present in the grain boundaries of the latter. Such intermetallic active sites favor the obtaining of ZrO2 films, as demonstrated by XPS and AFM results. From a mechanistic point of view, the electrochemical reactions take place simultaneously with the conventional chemical conversion process driven by ions diffusion. Such findings will bring new perspectives for the generation of controlled oxide coatings in modified electrodes used, as for example, in the construction of battery cells; in automotive and in aerospace industries, to replace micrometric layers of zinc phosphate by light-weight zirconium oxide nanometric ones. This study is particularly addressed for the reduction of industrial waste by applying green bath solutions without the need of auxiliary compounds and using lightweight ceramic materials.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMaterials [recurso eletrônico]. Basel, Switzerland. Vol. 14, no. 4 ( 2021), Art. 1043, 18 p.pt_BR
dc.rightsOpen Accessen
dc.subjectÓxido de zircôniopt_BR
dc.subjectConversion coatingen
dc.subjectRevestimentos protetorespt_BR
dc.subjectZirconium oxideen
dc.subjectAluminum alloysen
dc.subjectSubstratospt_BR
dc.subjectElectro-assisted depositionen
dc.subjectMetal-oxide interfaceen
dc.subjectNanocoatingen
dc.titleGreen nanocoatings based on the deposition of zirconium oxide : the role of the substratept_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001132716pt_BR
dc.type.originEstrangeiropt_BR


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