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In this work, the use of ZrO2 nanocoating in aluminum substrates, generated by controlled electrochemical chronoamperometry in hexafluorozirconic acid solutions (H2ZrF6·5H2O), resulted in a lower porous films than that obtained by chemical conversion coating. After the application of an epoxy coating, long-term cyclic immersion corrosion tests and scratch tests proved the superior protection of the dual system and the coating lifespan, thanks to the enhanced adhesion of ZrO2 intermediate layer and the organic coating. As zirconium-based electrolytes are considered more friendly bath if compared to that of other conversion coating processes, like chromating, phosphating or anodizing processes, the study opens new insights to the protection of structural metals in sectors such as automotive, naval and aerospace industries. The main advantages are the employment of lightweight intermediate pre-treatment (nanoscale), compared to conventional ones (microscale), and reduction of waste slurry (electrolyte bath free of additives).
Vitor B. Moreira; Alvaro Meneguzzi; Emilio Jiménez-Piqué; Carlos Alemán; Elaine Armelin. Aluminum Protection by Using Green Zirconium Oxide Layer and Organic Coating: An Efficient and Adherent Dual System. Sustainability 2021, 13, 9688 .
AMA StyleVitor B. Moreira, Alvaro Meneguzzi, Emilio Jiménez-Piqué, Carlos Alemán, Elaine Armelin. Aluminum Protection by Using Green Zirconium Oxide Layer and Organic Coating: An Efficient and Adherent Dual System. Sustainability. 2021; 13 (17):9688.
Chicago/Turabian StyleVitor B. Moreira; Alvaro Meneguzzi; Emilio Jiménez-Piqué; Carlos Alemán; Elaine Armelin. 2021. "Aluminum Protection by Using Green Zirconium Oxide Layer and Organic Coating: An Efficient and Adherent Dual System." Sustainability 13, no. 17: 9688.
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 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.
Vitor Bonamigo Moreira; Anna Puiggalí-Jou; Emilio Jiménez-Piqué; Carlos Alemán; Alvaro Meneguzzi; Elaine Armelin. Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate. Materials 2021, 14, 1043 .
AMA StyleVitor Bonamigo Moreira, Anna Puiggalí-Jou, Emilio Jiménez-Piqué, Carlos Alemán, Alvaro Meneguzzi, Elaine Armelin. Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate. Materials. 2021; 14 (4):1043.
Chicago/Turabian StyleVitor Bonamigo Moreira; Anna Puiggalí-Jou; Emilio Jiménez-Piqué; Carlos Alemán; Alvaro Meneguzzi; Elaine Armelin. 2021. "Green Nanocoatings Based on the Deposition of Zirconium Oxide: The Role of the Substrate." Materials 14, no. 4: 1043.
Vitor Bonamigo Moreira; Arjan W. Kleij; Lourdes Franco; Jordi Puiggalí; Alvaro Meneguzzi; Carlos Alemán; Elaine Armelin. Use of poly(limonene-8,9-oxide carbonate) as a bio-based prepolymer for epoxy thermoset production. 14th Mediterranean Congress of Chemical Engineering (MeCCE14) Abstracts Publication 2020, 1 .
AMA StyleVitor Bonamigo Moreira, Arjan W. Kleij, Lourdes Franco, Jordi Puiggalí, Alvaro Meneguzzi, Carlos Alemán, Elaine Armelin. Use of poly(limonene-8,9-oxide carbonate) as a bio-based prepolymer for epoxy thermoset production. 14th Mediterranean Congress of Chemical Engineering (MeCCE14) Abstracts Publication. 2020; ():1.
Chicago/Turabian StyleVitor Bonamigo Moreira; Arjan W. Kleij; Lourdes Franco; Jordi Puiggalí; Alvaro Meneguzzi; Carlos Alemán; Elaine Armelin. 2020. "Use of poly(limonene-8,9-oxide carbonate) as a bio-based prepolymer for epoxy thermoset production." 14th Mediterranean Congress of Chemical Engineering (MeCCE14) Abstracts Publication , no. : 1.
Vitor Bonamigo Moreira; Henrique Ribeiro Piaggio Cardoso; Jane Zoppas Ferreira; Alvaro Meneguzzi. DEPOSIÇÃO ELETROASSISTIDA DE ORTOSSILICATO DE TETRAETILA (TEOS) COMO PRÉ-TRATAMENTO PARA A PINTURA DE ALUMÍNIO AA1100. Tecnologia em Metalurgia, Materiais e Mineração 2018, 15, 56 -62.
AMA StyleVitor Bonamigo Moreira, Henrique Ribeiro Piaggio Cardoso, Jane Zoppas Ferreira, Alvaro Meneguzzi. DEPOSIÇÃO ELETROASSISTIDA DE ORTOSSILICATO DE TETRAETILA (TEOS) COMO PRÉ-TRATAMENTO PARA A PINTURA DE ALUMÍNIO AA1100. Tecnologia em Metalurgia, Materiais e Mineração. 2018; 15 (1):56-62.
Chicago/Turabian StyleVitor Bonamigo Moreira; Henrique Ribeiro Piaggio Cardoso; Jane Zoppas Ferreira; Alvaro Meneguzzi. 2018. "DEPOSIÇÃO ELETROASSISTIDA DE ORTOSSILICATO DE TETRAETILA (TEOS) COMO PRÉ-TRATAMENTO PARA A PINTURA DE ALUMÍNIO AA1100." Tecnologia em Metalurgia, Materiais e Mineração 15, no. 1: 56-62.
Vitor Bonamigo Moreira; Jane Zoppas Ferreira; Alvaro Meneguzzi. PRÉ-TRATAMENTO POR DEPOSIÇÃO ELETROASSISTIDA DE VINILTRIETOXISSILANO (VTES) PARA A PINTURA DE ALUMÍNIO. Tecnologia em Metalurgia, Materiais e Mineração 2018, 15, 68 -74.
AMA StyleVitor Bonamigo Moreira, Jane Zoppas Ferreira, Alvaro Meneguzzi. PRÉ-TRATAMENTO POR DEPOSIÇÃO ELETROASSISTIDA DE VINILTRIETOXISSILANO (VTES) PARA A PINTURA DE ALUMÍNIO. Tecnologia em Metalurgia, Materiais e Mineração. 2018; 15 (1):68-74.
Chicago/Turabian StyleVitor Bonamigo Moreira; Jane Zoppas Ferreira; Alvaro Meneguzzi. 2018. "PRÉ-TRATAMENTO POR DEPOSIÇÃO ELETROASSISTIDA DE VINILTRIETOXISSILANO (VTES) PARA A PINTURA DE ALUMÍNIO." Tecnologia em Metalurgia, Materiais e Mineração 15, no. 1: 68-74.
Vitor Bonamigo Moreira. Vinyltriethoxysilane electro-assisted deposition as a pretreatment for painting aluminum. 2016, 1 .
AMA StyleVitor Bonamigo Moreira. Vinyltriethoxysilane electro-assisted deposition as a pretreatment for painting aluminum. . 2016; ():1.
Chicago/Turabian StyleVitor Bonamigo Moreira. 2016. "Vinyltriethoxysilane electro-assisted deposition as a pretreatment for painting aluminum." , no. : 1.
Vitor Bonamigo Moreira. Electrodeposited TEOS (tetraethyl orthosilicate) as a pretreatment for organic coating on AA 1100 aluminum sheets. 2016, 1 .
AMA StyleVitor Bonamigo Moreira. Electrodeposited TEOS (tetraethyl orthosilicate) as a pretreatment for organic coating on AA 1100 aluminum sheets. . 2016; ():1.
Chicago/Turabian StyleVitor Bonamigo Moreira. 2016. "Electrodeposited TEOS (tetraethyl orthosilicate) as a pretreatment for organic coating on AA 1100 aluminum sheets." , no. : 1.
Vitor Bonamigo Moreira. Evaluation of TEOS (tetraethyl orthosilicate) coating electrodeposited on low-carbon steel. 2015, 1 .
AMA StyleVitor Bonamigo Moreira. Evaluation of TEOS (tetraethyl orthosilicate) coating electrodeposited on low-carbon steel. . 2015; ():1.
Chicago/Turabian StyleVitor Bonamigo Moreira. 2015. "Evaluation of TEOS (tetraethyl orthosilicate) coating electrodeposited on low-carbon steel." , no. : 1.
Vitor Bonamigo Moreira. Avaliação de revestimento orgânico sobre aço galvanizado de diferentes tamanhos de grão. 2015, 1 .
AMA StyleVitor Bonamigo Moreira. Avaliação de revestimento orgânico sobre aço galvanizado de diferentes tamanhos de grão. . 2015; ():1.
Chicago/Turabian StyleVitor Bonamigo Moreira. 2015. "Avaliação de revestimento orgânico sobre aço galvanizado de diferentes tamanhos de grão." , no. : 1.