| Titre : |
Enhanced corrosion resistance and mechanical properties of nanostructured graphene-polymer composite coating on copper by electrophoretic deposition |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Kumari, Auteur ; A. Panigrahi, Auteur ; S. K. Singh, Auteur ; S. K. Pradhan, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 583-592 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésion
Anticorrosifs
Anticorrosion
Composites
Dépôt électrophorétique
Electrochimie
Essais (technologie)
Oxyde de graphène
Poly(4-vinylpyridine-méthacrylate de butyle)
Résistance à la fissuration
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Composite coating of reduced graphene oxide (RGO) and poly (4-vinylpyridine-co-butyl methacrylate) (PVPBM) on copper was produced by electrophoretic deposition (EPD) technique. The structural and morphological characterizations of the RGO-PVPBM coating were carried out using a Raman spectrometer and a field emission scanning electron microscope, respectively. The thermal stability of the coating was analyzed by thermo-gravimetric analysis, and the corrosion resistance properties were examined by potentiodynamic polarization measurements and electrochemical impedance spectroscopy in 3.5% NaCl solution. At optimal EPD conditions of operating voltage of 5 V and total deposition time of 15 min, a uniform crack-free RGO-PVPBM composite coating is obtained. The microscratch experiment has shown an enhancement in the crack propagation resistance of RGO-PVPBM composite coating up to 3.7 times and adhesive strength increased ~2 times compared to PVPBM coating, thereby making it a potential damage tolerance surface coating on Cu substrate. The potentiodynamic measurements clearly show that RGO-PVPBM acts as a protective coating for Cu in 3.5% NaCl solution. The corrosion inhibition efficiency for RGO-PVPBM coating was calculated to be 95.4% which clearly indicates that the tailored RGO-PVPBM composite is an excellent barrier coating to ion diffusion and corrosive electrolyte with considerably enhanced corrosion resistance. |
| Note de contenu : |
- EXPERIMENTAL : RGO-PVPBM - Characterization techniques - Electrochemical tests
- RESULTS AND DISCUSSION : Structural investigations - Microstructural investigations of EPD coating - Thermo-gravimetric analysis (TGA) - Microscratch adhesion and crack propagation resistance of coating - Electrochemical measurement and corrosion resistance properties of coating - Microstructural changes after electrochemical test |
| DOI : |
10.1007/s11998-017-0001-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0001-z.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30754 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 3 (05/2018) . - p. 583-592
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