Hang, To Thi Xuan and Truc, Trinh Anh and Duong, Nguyen Thuy and Pébère, Nadine and Olivier, Marie-Georges Layered double hydroxides as containers of inhibitors in organic coatings for corrosion protection of carbon steel. (2012) Progress in Organic Coatings, 74 (2). 343-348. ISSN 0300-9440
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(Document in English)
PDF ( Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 5MB |
Official URL: http://dx.doi.org/10.1016/j.porgcoat.2011.10.020
Abstract
The present work focuses on the use of layered double hydroxides (LDH) as containers for corrosion inhibitors in an epoxy coating. 2-Benzothiazolylthio-succinic acid (BTSA), used as corrosion inhibitor, was intercalated by co-precipitation in magnesium-aluminum layered double hydroxides. The obtained LDH-BTSA was characterized by infrared spectroscopy, X-ray diffraction and scanning electron microscopy. BTSA release from LDH-BTSA in NaCl solutions was investigated by UV-vis spectroscopy. The inhibitive action of LDH-BTSA on carbon steel corrosion was characterized by electrochemical methods and the protective properties of an epoxy coating containing LDH-BTSA were evaluated by electrochemical impedance spectroscopy. It was shown that the BTSA was intercalated in the layered double hydroxide and its loading was about 33%. The BTSA release was dependent on the NaCl concentration in the electrolyte. The polarization curves obtained on the carbon steel sample showed that the LDH-BTSA is an anodic inhibitor. Its efficiency was about 90% at a concentration of 3 g/l. The impedance results showed that the incorporation of LDH-BTSA (3%) in the epoxy matrix improved the corrosion protection of the carbon steel.
Item Type: | Article |
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Additional Information: | Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF can be found at Progress in Organic Coatings website: http://www.sciencedirect.com/science/article/pii/S0300944011003420 |
HAL Id: | hal-00864273 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Other partners > Université de Mons - UMONS (BELGIUM) Other partners > Vietnam Academy of Science and Technology - VAST (VIETNAM) |
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Deposited On: | 20 Sep 2013 14:39 |
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