| Titre : |
Eco-friendly silane as corrosion inhibitor for dual self-healing anticorrosion coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Jialiang Liu, Auteur ; Dashuai Yan, Auteur ; Zhenhua Zhang, Auteur ; Yanli Wang, Auteur ; Dalei Song, Auteur ; Tao Zhang, Auteur ; Jingyuan Liu, Auteur ; Fei He, Auteur ; Meng Zhang, Auteur ; Jun Wang, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 1381-1391 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosifs
Anticorrosion
Caractérisation
Revêtement autoréparant
Revêtements organiques
Revêtements protecteurs
Silanes
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Corrosion resistance and active protection performance of organic coatings can be improved by incorporation of corrosion inhibitor-loaded nanocontainers. Herein, 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane (FTES) as a green corrosion inhibitor was encapsulated in hollow mesoporous silica (HMS). FTES-loaded HMS (FHMS) was embedded in an epoxy coating on the surface of the magnesium (Mg) alloy. Artificial defect in FHMS-loaded epoxy coating was made by needle punching. The long-term anticorrosion behavior and self-healing properties of the modified coating were evaluated by electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). In all cases, FHMS can enhance corrosion resistance of the epoxy coating. Among all the FHMS-loaded coatings, the coating containing 0.5 wt% FHMS (FHMS-0.5%) still exhibits excellent corrosion protection performance after 2688 h of immersion. Meanwhile, it shows superior self-healing ability in the scratched areas. These are attributed to the fact that FTES released from HMS nanoparticles can interact with the epoxy coating and the Mg alloy substrate. Moreover, FTES silane can also form a crosslinked Si-O-Si network by itself. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Substrate pretreatment - Preparation of HMS and FHMS - Preparation of coatings - Characterization
- RESULTS AND DISCUSSION : Characterization of HMS and FHMS - Self-healing properties of different FHMS coatings - Anticorrosion and self-healing mechanism
- Table 1 : Textural data for the HMS and FHMS samples |
| DOI : |
https://doi.org/10.1007/s11998-022-00608-4 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-021-00608-4.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38277 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 5 (09/2022) . - p. 1381-1391
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