| Titre : |
Self-healing hybrid coating of phytic acid/silane for improving the corrosion resistance of magnesium alloy |
| Type de document : |
texte imprimé |
| Auteurs : |
Yan Li, Auteur ; Shu Cai, Auteur ; Guohua Xu, Auteur ; Feiyang Zhang, Auteur ; Fengwu Wang, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 571-581 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosifs
Anticorrosion
Biomatériaux
Electrochimie
Magnésium -- Alliages
Matériaux hybrides
Matériel médical
Métaux -- Revêtements protecteurs
Revêtement autoréparant
Test d'immersion
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In order to improve the corrosion resistance of a biodegradable magnesium alloy, a series of phytic acid/3-aminopropyltrimethoxysilane (γ-APS) hybrid coatings was prepared on AZ31 magnesium alloys by dipping the magnesium alloy into the mixing solution of phytic acid and γ-APS. During the preparation of hybrid coatings, the pH values of the mixing solutions greatly affected the uniformity of the coatings and subsequently influenced their corrosion resistance. Electrochemical tests indicated that the hybrid coating prepared in the solution of pH = 8.0 could highly improve corrosion resistance of AZ31 magnesium alloys. Meanwhile, corrosion current density of the hybrid coating coated sample was significantly decreased from the uncoated sample of 138.1 ± 11.9 to 8.5 ± 0.8 μA cm−2. Immersion test in simulated body fluid revealed that the cracks on the surface of the hybrid coating gradually healed up during the lengthy immersion. |
| Note de contenu : |
- EXPERIMENTAL METHOD AND MATERIALS : Materials and reagents - Synthesis of hybrid coatings of AZ31 magnesium alloy substrates - Coating characterization - Immersion test - Electrochemical test
- RESULTS AND DISCUSSION : Coating characterization and formation kinetics of hybrid coatings - In vitro degradation behavior - Electrochemical behaviors - "Self-healing ability of hybrid coatings |
| DOI : |
10.1007/s11998-017-0014-7 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0014-7.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30753 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 3 (05/2018) . - p. 571-581
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