Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/15178
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dc.contributor.authorMata, D-
dc.contributor.authorSerdechnova, M-
dc.contributor.authorMohedano, M-
dc.contributor.authorMendis, CL-
dc.contributor.authorLamaka, SV-
dc.contributor.authorTedim, J-
dc.contributor.authorHack, T-
dc.contributor.authorNixon, S-
dc.contributor.authorZheludkevich, ML-
dc.date.accessioned2017-09-20T15:54:49Z-
dc.date.available2017-01-01-
dc.date.available2017-09-20T15:54:49Z-
dc.date.issued2017-
dc.identifier.citationRSC ADVANCES, 2017, 7 (56), pp. 35357 - 35367 (11)en_US
dc.identifier.issnhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000405811400050&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=f12c8c83318cf2733e615e54d9ed7ad5-
dc.identifier.issnhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000405811400050&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=f12c8c83318cf2733e615e54d9ed7ad5-
dc.identifier.issn2046-2069-
dc.identifier.urihttp://bura.brunel.ac.uk/handle/2438/15178-
dc.description.abstractThis work suggests a low-temperature sealing approach for tartaric–sulfuric acid (TSA) anodized AA2024 based on hierarchically organized Li–Al-layered double hydroxide (LDH) structures. The new proposed sealing is expected to be directly competitive to the standard hot water sealing (HWS) approaches because of its reduced treatment temperature and high protection efficiency. A hierarchical organization of in situ formed LDH nano-flakes across the depth length of the TSA pores, from the macrodown to the nano-size range, was observed with transmission electron microscopy (TEM). Electrochemical impedance spectroscopy (EIS) studies showed that the densely packed LDH arrangement at the porous oxide layer is directly related to the drastically improved barrier properties of TSA. Moreover, LDH flakelike structures worked as “smart” reservoirs for corrosion inhibiting vanadium species (VOx) that are released on demand upon the onset of corrosion. This was confirmed using a scanning vibrating electrode technique (SVET), giving relevant insights into the time-resolved release activity of VOx and the formation of the passivation layer on cathodic intermetallics, corroborated with EDX and analytical Raman spectroscopy. Passive and active corrosion protection was imparted to the anodic layer via new Li–Al-LDH structures with long-term protection exceeding that of standard HWS procedures.en_US
dc.description.sponsorshipThis work has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 645676 project MULTISURF. Dr M. Mohedano is grateful to MICINN (Spain) for nancial support via Proyecto Retos Jovenes Investigadores MAT2015-73355-JIN. Dr S. V. Lamaka acknowledges the nancial support of Alexander von Humboldt Foundation via Experienced Researcher Grant. Dr J. Tedim thanks FCT for the researcher grant IF/00347/2013. This work was developed in the scope of the project CICECO – Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (Ref. FCT UID/CTM/50011/2013), nanced by national funds through the FCT/MEC and when applicable co-nanced by FEDER under the PT2020 Partnership Agreement. Dr D. Mata would like to thank Dr Nico Scharnagl for the Raman scientic discussions. Authors acknowledge Mr Maksim Starykevich for carrying out the GDOES analyses.en_US
dc.format.extent35357 - 35367 (11)-
dc.languageEnglish-
dc.language.isoenen_US
dc.publisherROYAL SOC CHEMISTRYen_US
dc.subjectScience & Technologyen_US
dc.subjectPhysical Sciencesen_US
dc.subjectChemistry, Multidisciplinaryen_US
dc.subjectChemistryen_US
dc.subjectLAYERED DOUBLE HYDROXIDEen_US
dc.subjectANION-EXCHANGE INTERCALATIONen_US
dc.subjectX-RAY-DIFFRACTIONen_US
dc.subjectCORROSION PROTECTIONen_US
dc.subjectTARTARIC ACIDen_US
dc.subjectFILMSen_US
dc.subjectCOATINGSen_US
dc.subjectAA2024-T3en_US
dc.subjectBEHAVIORen_US
dc.subjectELECTROLYTESen_US
dc.titleHierarchically organized Li-Al-LDH nano-flakes: a low-temperature approach to seal porous anodic oxide on aluminum alloysen_US
dc.typeArticleen_US
dc.identifier.doihttp://dx.doi.org/10.1039/c7ra05593e-
dc.relation.isPartOfRSC ADVANCES-
pubs.issue56-
pubs.publication-statusPublished-
pubs.volume7-
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