| Titre : |
Silane coupling agent (SCA) pretreatment and polycaprolactone (PCL) coating for enhanced corrosion resistance for magnesium |
| Type de document : |
texte imprimé |
| Auteurs : |
Jialin Niu, Auteur ; Huiyin Liu, Auteur ; Xin Ping, Auteur ; Xianchao Xun, Auteur ; Guangyu Li, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 125-133 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Alliages
Anticorrosifs
Anticorrosion
Caractérisation
Electrochimie
Magnésium -- Alliages
Métaux -- Revêtements protecteurs
Morphologie (matériaux)
Poly-e-caprolactone
Réaction de couplage
Revêtements -- Analyse
Silanes
Surfaces (Physique)
Test d'immersion
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
To address the problem of rapid corrosion of magnesium (Mg) alloys, a biodegradable polymer film of polycaprolactone (PCL) with KH550 as silane coupling agent (SCA) was coated on Mg substrate. The effect of the coating was analyzed using electrochemical tests (potentiodynamic polarization curves and electrochemical impedance spectroscopy) and immersion tests (hydrogen evaluation tests and scratch tests). The electrochemical tests showed that the corrosion resistance was extremely improved (by nearly two orders for icorr and 1.04 V for Ecorr), and the immersion tests illustrated that the connection between PCL and Mg substrate was enhanced as well (especially in scratch tests), thus indicating significant improvement of the corrosion resistance of SCA-pretreated PCL polymer samples. In summary, SCA-pretreated PCL is a promising coating to decrease the degradation behavior of Mg substrate. |
| Note de contenu : |
- EXPERIMENTAL : Materials and specimen preparation - Characterization - Electrochemical tests - Immersion tests
- RESULTS AND DISCUSSION : Surface morphology of coatings - FTIR analysis of coatings - Electrochemical corrosion behavior - Immersion degradation behavior
- Table 1 : Chemical composition of SBF
- Table 2 : Corrosion potential Ecorr and corrosion current density icorr obtained from PDP curves by Tafel method, cathodic Tafel slope, and corrosion resistance (Rp) values of Mg, MS, MP, and MSP |
| DOI : |
10.1007/s11998-018-0107-y |
| En ligne : |
https://link.springer.com/article/10.1007/s11998-018-0107-y |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31976 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 1 (01/2019) . - p. 125-133
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