Aluminum protection by using green zirconium oxide layer and organic coating: An efficient and adherent dual system
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hdl:2117/353431
Tipus de documentArticle
Data publicació2021-09-01
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Abstract
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).
CitacióBonamigo, V. [et al.]. Aluminum protection by using green zirconium oxide layer and organic coating: An efficient and adherent dual system. "Sustainability (Switzerland)", 1 Setembre 2021, vol. 13, núm. 9688, p. 1-17.
ISSN20711050
Versió de l'editorhttps://www.mdpi.com/2071-1050/13/17/9688
Col·leccions
- IMEM-BRT- Innovation in Materials and Molecular Engineering - Biomaterials for Regenerative Therapies - Articles de revista [399]
- Departament de Ciència i Enginyeria de Materials - Articles de revista [737]
- Doctorat en Polímers i Biopolímers - Articles de revista [152]
- CIEFMA - Centre d'Integritat Estructural, Fiabilitat i Micromecànica dels Materials - Articles de revista [283]
- Departament d'Enginyeria Química - Articles de revista [2.227]
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sustainability-MDPI_Bonamigo et al.pdf | Research article | 1,759Mb | Visualitza/Obre |