Journal
COATINGS
Volume 7, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/coatings7110190
Keywords
layered double hydroxides; plasma electrolytic oxidation; aluminum alloy
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Funding
- MULTISURF (Marie Sklodowska-Curie grant agreement) [645676]
- MINECO (Spain) [MAT2015-73355-JIN]
- Marie Curie Actions (MSCA) [645676] Funding Source: Marie Curie Actions (MSCA)
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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 gamma, alpha, 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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