Role of Phase Composition of PEO Coatings on AA2024 for In-Situ LDH Growth
Plasma electrolytic oxidation (PEO) is an environmentally friendly anodizing technique leading to the formation of a ceramic-like coatings under high-voltage discharges. Layered double hydroxides (LDHs) were grown directly on γ, α, and amorphous Al2O3 powders, respectively, in order to investigate t...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/19180 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/19180 |
| Access Level: | acceso abierto |
| Palabra clave: | layered double hydroxides plasma electrolytic oxidation aluminum alloy Ingeniería química Materiales 3303 Ingeniería y Tecnología Químicas 3312 Tecnología de Materiales |
| Sumario: | Plasma electrolytic oxidation (PEO) is an environmentally friendly anodizing technique leading to the formation of a ceramic-like coatings under high-voltage discharges. Layered double hydroxides (LDHs) were grown directly on γ, α, and amorphous Al2O3 powders, respectively, in order to investigate the phase responsible for in-situ LDH growth on PEO coating. Furthermore, it is shown that LDH growth is limited by the high tortuosity of the PEO layer and the accessibility of Al(OH)−4 anions from the substrate covered with thin amorphous aluminum oxide, through the pores. |
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