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Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate

Herein, 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 ZrO(2) film is affected by the substrate nature and...

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Autores principales: Bonamigo Moreira, Vitor, Puiggalí-Jou, Anna, Jiménez-Piqué, Emilio, Alemán, Carlos, Meneguzzi, Alvaro, Armelin, Elaine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7926333/
https://www.ncbi.nlm.nih.gov/pubmed/33672124
http://dx.doi.org/10.3390/ma14041043
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author Bonamigo Moreira, Vitor
Puiggalí-Jou, Anna
Jiménez-Piqué, Emilio
Alemán, Carlos
Meneguzzi, Alvaro
Armelin, Elaine
author_facet Bonamigo Moreira, Vitor
Puiggalí-Jou, Anna
Jiménez-Piqué, Emilio
Alemán, Carlos
Meneguzzi, Alvaro
Armelin, Elaine
author_sort Bonamigo Moreira, Vitor
collection PubMed
description Herein, 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 ZrO(2) 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 ZrO(2) 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.
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spelling pubmed-79263332021-03-04 Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate Bonamigo Moreira, Vitor Puiggalí-Jou, Anna Jiménez-Piqué, Emilio Alemán, Carlos Meneguzzi, Alvaro Armelin, Elaine Materials (Basel) Article Herein, 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 ZrO(2) 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 ZrO(2) 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. MDPI 2021-02-23 /pmc/articles/PMC7926333/ /pubmed/33672124 http://dx.doi.org/10.3390/ma14041043 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bonamigo Moreira, Vitor
Puiggalí-Jou, Anna
Jiménez-Piqué, Emilio
Alemán, Carlos
Meneguzzi, Alvaro
Armelin, Elaine
Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate
title Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate
title_full Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate
title_fullStr Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate
title_full_unstemmed Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate
title_short Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate
title_sort green nanocoatings based on the deposition of zirconium oxide: the role of the substrate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7926333/
https://www.ncbi.nlm.nih.gov/pubmed/33672124
http://dx.doi.org/10.3390/ma14041043
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