| Titre : |
Improvement in corrosion resistance of WE43 magnesium alloy by the electrophoretic formation of a ZnO surface coating |
| Type de document : |
texte imprimé |
| Auteurs : |
J. E. Qu, Auteur ; M. Ascencio, Auteur ; L. M. Jiang, Auteur ; S. Omanovic, Auteur ; L. X. Yang, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 1559-1570 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosifs
Anticorrosion
Corrosion
Dépôt électrophorétique
Magnésium -- Alliages
Nanoparticules
Ponts métalliques -- Revêtements protecteurs
Revêtement métallique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A highly active Mg alloy, WE43, was electrophoretically coated by ZnO nanoparticles followed by heat treatment with the aim of decreasing its initial corrosion resistance for possible applications as biodegradable body implants. The investigation of the corrosion behavior of the coated WE43 surface was performed by electrochemical impedance spectroscopy in a phosphate-buffered saline solution (PBS). It was found that the highest corrosion protection resistance was achieved when the coating was formed at a cell voltage of 3 V during a 210 min deposition time. The corrosion protection efficiency of this coating was excellent, above 99.9% during a 6 h of immersion in PBS. The coating was found to be polycrystalline with a preferential growth direction along the c-axis, and the outer layer was composed of complex compounds containing oxides, carbonates, and hydroxides of Zn and Mg. The deposited ZnO nanoparticles were observed to be fused to an integral coating by heat treatment and thus provided excellent physical barrier against transport of corrosion species. |
| DOI : |
10.1007/s11998-019-00212-7 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00212-7.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33260 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 6 (11/2019) . - p. 1559-1570
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