Truc, Trinh Anh and Thuy, Thai Thu and Oanh, Vu Ke and Hang, To Thi Xuan and Nguyen, Anh Son and Caussé, Nicolas
and Pébère, Nadine
8-hydroxyquinoline-modified clay incorporated in an epoxy coating for the corrosion protection of carbon steel.
(2019)
Tribology: Materials, Surfaces and Interfaces, 14. 26-33. ISSN 1751-5831
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(Document in English)
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Official URL: https://doi.org/10.1016/j.surfin.2018.10.007
Abstract
In the present work, a well-known corrosion inhibitor (8-hydroxyquinoline (8HQ)) was inserted within the montmorillonite platelets (8HQ-MMT) and the modified clay was incorporated (3 wt.%) into a solvent-free epoxy coating which was afterwards deposited on carbon steel substrates. First, the inhibitive action of 8HQ was investigated by electrochemical methods carried out on a bare carbon steel rotating disk electrode in a 0.1 M NaCl solution. Then, electrochemical impedance measurements were performed to assess the effect of the 8HQ-MMT in the epoxy coating for the corrosion protection. The results were compared with a reference sample constituted by the epoxy coating containing an ammonium quaternary salt-modified clay. It was shown that the two coatings presented good barrier properties. Dry and wet adherence measurements revealed an improvement of the adherence when the 8HQ-MMT was incorporated into the coating by comparison with the reference sample. It was concluded that the 8HQ mainly had an effect at the metal/coating interface but its concentration was too low to afford significant corrosion protection of the carbon steel.
Item Type: | Article |
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HAL Id: | hal-02353640 |
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 > Vietnam Academy of Science and Technology - VAST (VIETNAM) |
Laboratory name: | |
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Deposited On: | 07 Nov 2019 12:42 |
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