authors |
Zheludkevich, ML; Tedim, J; Freire, CSR; Fernandes, SCM; Kallip, S; Lisenkov, A; Gandini, A; Ferreira, MGS |
nationality |
International |
journal |
JOURNAL OF MATERIALS CHEMISTRY |
keywords |
NANOCONTAINERS; NETWORKS; POLYMER; CHITIN; CERIUM |
abstract |
A new type of corrosion protective self-healing coating is reported in the present study. The coating is constituted by a chitosan-based pre-layer deposited onto the metal surface and a barrier hybrid film. The chitosan film doped with cerium ions serves as a reservoir for the corrosion inhibitor. The cerium ions form a complex with the functional groups of chitosan macromolecules providing a prolonged release of the active agent on demand. The developed bi-layer protective coating was applied to aluminium alloy 2024, which is widely used in the aeronautical industry. The results obtained from electrochemical impedance spectroscopy clearly demonstrate a superior corrosion protection when the coating with the cerium-doped biopolymer pre-layer is used. The localized electrochemical study in micro-confined defects showed a well-defined self-healing ability of the developed coating system. |
publisher |
ROYAL SOC CHEMISTRY |
issn |
0959-9428 |
year published |
2011 |
volume |
21 |
issue |
13 |
beginning page |
4805 |
ending page |
4812 |
digital object identifier (doi) |
10.1039/c1jm10304k |
web of science category |
Chemistry, Physical; Materials Science, Multidisciplinary |
subject category |
Chemistry; Materials Science |
unique article identifier |
WOS:000288450200012
|