Sol-gel derived hydroxyapatite/titania biocoatings on titanium substrate

Xu, W., Hu, W., Li, M. and Wen, Cui`e 2006, Sol-gel derived hydroxyapatite/titania biocoatings on titanium substrate, Materials letters, vol. 60, no. 13-14, pp. 1575-1578.

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Title Sol-gel derived hydroxyapatite/titania biocoatings on titanium substrate
Author(s) Xu, W.
Hu, W.
Li, M.
Wen, Cui`e
Journal name Materials letters
Volume number 60
Issue number 13-14
Start page 1575
End page 1578
Publisher Elsevier BV
Place of publication Amsterdam, Netherlands
Publication date 2006-06
ISSN 0167-577X
1873-4979
Keyword(s) titanium
sol–gel preparation
surfaces
hydroxyapatite
titania
Summary A simple sol–gel method was successfully developed for a hydroxyapatite (HA)/TiO2 double layer deposition on a pure titanium substrate. Phase formation, surface morphology, and interfacial microstructure were investigated by differential scanning calorimetry analysis (DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The TiO2 layer was coated by a spin coating method at a speed of 1500 rpm for 15 s, followed by a heat treatment at 560 °C for 20 min. The HA film was subsequently spin coated on the outer surface at the same speed and then heat-treated at difference temperatures. Results indicated that the HA phase began to crystallize after a heat treatment at 580 °C; and the crystallinity increased obviously at a temperature of 780 °C. The HA film showed a porous structure and a thickness of 5–7 μm after the heat treatment at 780 °C. SEM observations revealed no delamination and crack at the interfaces of HA/TiO2 and TiO2/Ti. The HA film with a porous structure is expected to be more susceptible to the natural remodeling processes when it is implanted in a living body.
Notes Available online 13 December 2005.
Language eng
Field of Research 091499 Resources Engineering and Extractive Metallurgy not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2005, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30009006

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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