| Titre : |
A polyurethane coating using CoMOF-BTA metal-organic framework for active protection of AA2024-T3 |
| Type de document : |
texte imprimé |
| Auteurs : |
Izuchukwu K. Nwokolo, Auteur ; Hongwei Shi, Auteur ; Alexander I. Ikeuba, Auteur ; Wanyu Zhang, Auteur ; Fuchun Liu, Auteur ; En-Hou Han, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 521-535 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Aluminium -- Alliages
Anticorrosifs
Anticorrosion
Caractérisation
Electrochimie
Essais d'adhésion
Essais de brouillard salin
Polyuréthanes
Revêtements organiques
Test d'immersion
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
CoMOF-BTA, a new metal-organic framework with inherent corrosion inhibition ability was prepared via a one-step solvothermal process and characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and thermal analyses. Immersion and polarization tests were conducted to evaluate the ability of CoMOF-BTA to resist corrosion on AA2024-T3 alloy in NaCl solution. In addition, CoMOF-BTA particles were incorporated into polyurethane coatings to produce active anti-corrosion coatings, whose corrosion protection capabilities were assessed using electrochemical methods and salt spray analysis. The impedance results show that polyurethane coatings containing CoMOF-BTA have coating resistances (Rcoat) that are around two orders of magnitude higher than that without the CoMOF-BTA particles. The salt spray analysis also indicates the corrosion protection ability of coatings containing CoMOF-BTA particles after a long period of exposure. The results demonstrate that CoMOF-BTA improved the ability of AA2024-T3 to resist corrosion and confirm the anti-corrosion properties of CoMOF-BTA-laden coatings by the controlled release of BTA molecules in NaCl solution. This study offers a new anti-corrosion MOF material and active coating for the protection of aluminum alloys against corrosion. |
| Note de contenu : |
- MATERIALS AND METHODS : Material - Synthesis of CoMOF-BTA - Characterization - Immersion tests on bare sample - Electrochemical tests - Adhesion test - Salt spray experiment
- RESULTS AND DISCUSSION : Characterization - Corrosion resistance of CoMOF-BTA on AA2024-T3 - Effects of CoMOF-BTA on polyurethane coating
- Table 1 : Chemical composition of Aluminum alloy 2024-T3 in wt.%
- Table 2 : Fitting results of polarization curves of the bare AA2024-T3 samples immersed in 3.5 wt.% NaCl and the extract solution of 2 wt. % CoMOF-BTA at 298 K |
| DOI : |
https://doi.org/10.1007/s11998-023-00835-x |
| En ligne : |
https://drive.google.com/file/d/1GL8tpOMjfMRArOUVCjXERSlwLlTivmve/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40774 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 2 (03/2024) . - p. 521-535
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