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http://hdl.handle.net/10773/20113
Title: | Sealing of tartaric sulfuric (TSA) anodized AA2024 with nanostructured LDH layers |
Author: | Kuznetsov, B. Serdechnova, M. Tedim, J. Starykevich, M. Kallip, S. Oliveira, M. P. Hack, T. Nixon, S. Ferreira, M. G. S. Zheludkevich, M. L. |
Keywords: | ACTIVE CORROSION PROTECTION DOUBLE HYDROXIDE FILM T3 ALUMINUM-ALLOY SOL-GEL COATINGS ORGANIC COATINGS BEHAVIOR ACID INHIBITION NANOCONTAINERS HYDROTALCITE |
Issue Date: | 2016 |
Publisher: | ROYAL SOC CHEMISTRY |
Abstract: | In this work, a functional sealing of a TSA anodic layer on AA2024 is suggested based upon the formation of inhibitor-containing Zn-Al layered double hydroxides (LDH). The LDH structures are formed in the pores of the anodic layer and on top of it as a result of hydrothermal treatment in a Zn2+-containing bath as shown by the structure, morphology and composition analysis. The resulting LDHs were loaded with a well-known corrosion inhibitor (vanadate). Electrochemical impedance spectroscopy, salt spray tests and scanning vibrating electrode techniques have shown a remarkable improvement in corrosion resistance of the LDH-modified sample in comparison with conventional hot-water sealing. The vanadate-loaded LDHs rendered a significant long-term active protection for the covered aluminum alloy substrate. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20113 |
DOI: | 10.1039/c5ra27286f |
ISSN: | 2046-2069 |
Publisher Version: | 10.1039/c5ra27286f |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Sealing of tartaric sulfuric (TSA) anodized AA2024 with nanostructured LDH layers_10.1039c5ra27286f.pdf | 2.76 MB | Adobe PDF | View/Open |
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