Nanostructured LDH-container layer with active protection functionality
authors Tedim, J; Zheludkevich, ML; Salak, AN; Lisenkov, A; Ferreira, MGS
nationality International
journal JOURNAL OF MATERIALS CHEMISTRY
keywords DOUBLE HYDROXIDE FILMS; CORROSION PROTECTION; CONVERSION FILM; MG ALLOY; RESISTANCE; ALUMINUM; NANOCONTAINERS; COATINGS; DIFFRACTION; INHIBITION
abstract Self-healing protective coatings based on different types of nanocontainers of corrosion inhibitors have been recently developed and reported as promising solutions for many industrial applications. Layered double hydroxide (LDH) nanocontainers are among the most interesting systems since they confer the delivery of inhibitors on demand under action of corrosion-relevant triggers such as the presence of corrosive anions or local change of pH. In this paper, we report for the first time a new approach based on formation of a nanostructured LDH-container layer directly on the metal surface as a result of conversion reaction with a metal (aluminium alloy 2024) surface. The methodology allows the formation of a spatially differentiated LDH structure preferentially on surface sites located at active intermetallics. The LDH container layer loaded with vanadate ions provides an efficient active corrosion protection and can be used as a functional layer in self-healing coating systems.
publisher ROYAL SOC CHEMISTRY
issn 0959-9428
year published 2011
volume 21
issue 39
beginning page 15464
ending page 15470
digital object identifier (doi) 10.1039/c1jm12463c
web of science category Chemistry, Physical; Materials Science, Multidisciplinary
subject category Chemistry; Materials Science
unique article identifier WOS:000295278000054

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