| Titre : |
Development of thin-film hydroxyapatite coatings with an intermediate shellac layer produced by dip-coating process on Ti6Al4V implant materials |
| Type de document : |
texte imprimé |
| Auteurs : |
A. Ritwik, Auteur ; K. K. Saju, Auteur ; Ajith Vengellur, Auteur ; P. P. Saipriya, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 597-605 |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésion
Dip-coating
Gomme-laque
HydroxyapatiteL'hydroxyapatite est une espèce minérale de la famille des phosphates, de formule Ca5(PO4)3(OH), usuellement écrite Ca10(PO4)6(OH)2 pour souligner le fait que la maille de la structure cristalline comprend deux molécules. L'hydroxyapatite est le membre hydroxylé du groupe apatite. L'ion OH- peut être remplacé par le fluor, le chlore ou le carbonate.
L'hydroxyapatite cristallise dans le système hexagonal. La poudre d'hydroxyapatite pure est blanche. Celles que l'on trouve dans la nature peuvent cependant être de couleur marron, jaune ou verte.
Métaux -- Revêtements
Titane -- Alliages
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A thin layer of hydroxyapatite (HAp) coating has been developed on Ti6Al4V substrates using a dip-coating process. An intermediate layer of shellac (natural resin) was applied in between the substrate and the coating film to improve the adhesion strength without the need for any secondary annealing process. The adhesion strength was measured as 7.14 MPa. The surface of the developed coating was characterized using a scanning electron microscope. The total coating thickness was found to be 30 microns, and the surface roughness parameters were measured as 0.93 μm (Ra), 1.17 μm (Rq), and 6.67 μm (Rz). The dip-coated samples were also subjected to dissolution behavior study and in vitro study. The measured parameters of the coating suggest the use of this method as an alternative to other expensive and temperature-dependent coating methods for producing HAp coating with better adhesion strength. |
| Note de contenu : |
- Table 1 : Adhesion strength & coating thickness
- Table 2 : The dissolution rate of Ca and P ions for the different time periods
- Table 3 : Atomic% of Ca and P in coated substrate immersed in SBF for different time periods |
| DOI : |
https://doi.org/10.1007/s11998-021-00549-y |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-021-00549-y.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37290 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 2 (03/2022) . - p. 597-605
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Development of thin-film hydroxyapatite coatings with an intermediate shellac layer produced by dip-coating process on Ti6Al4V implant materials in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 2 (03/2022)
