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.
Attached Files
(Some files may be inaccessible until you login with your Deakin Research Online credentials)
Name
Description
MIMEType
Size
Downloads
Title
Sol-gel derived hydroxyapatite/titania biocoatings on titanium substrate
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