Loading...
Please wait, while we are loading the content...
Similar Documents
Characterisation of calcium phosphate/titanium dioxide hybrid coatings.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Boyd, A. R. Burke, George A. Duffy, Heather S. Cairns, M. L. O'Hare, Peter Meenan, Brian |
| Copyright Year | 2008 |
| Abstract | The role of titanium dioxide (TiO2) as a means to engender enhanced stability into calcium phosphate (Ca-P) coatings has been well recognised. Several different methods have been used to create such Ca-P/TiO2 hybrid layers on a range of substrates. This paper reports the properties of a Ca-P/TiO2 system created by the sputter deposition of hydroxyapatite onto a titanium surface and the subsequent thermal diffusion of TiO2 through the porous Ca-P layer. The role of temperature in determining the surface contribution from TiO2 has been determined. Coatings annealed up to 600 degrees C did not exhibit any hybrid nature in the uppermost surface, however the coatings annealed to 700 degrees C did show the presence of both HA and rutile TiO2. The surfaces annealed to 800 degrees C were predominantly rutile TiO2. It was also observed that the Ca/P ratio decreased with increasing annealing temperature and that the coating annealed to 700 degrees C had a value of 1.82 +/- 0.07, which was closest to stoichiometric HA. Furthermore, the coatings that were annealed to 700 degrees C displayed a Ca-P/TiO2 hybrid nature, specifically in their uppermost surface and supported the growth and proliferation of osteoblast-like cells more readily when compared to the HA coatings or the rutile TiO2 surfaces. |
| Starting Page | 4 |
| Ending Page | 4 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.nibec.ulster.ac.uk/research/sample_papers/biomaterials/Characterisation%20of%20calcium%20phosphate%20titanium%20dioxide%20hybrid%20coatings.pdf |
| Alternate Webpage(s) | http://uir.ulster.ac.uk/5777/2/Jn-Mat-Sci-Mat-Med-2008-ABoyd.pdf |
| PubMed reference number | 17607520v1 |
| Volume Number | 19 |
| Issue Number | 2 |
| Journal | Journal of materials science. Materials in medicine |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Coating Excipient Diffusion Magnetic Resonance Imaging Hemagglutination test Osteoblasts Spectroscopy, Fourier Transform Infrared X-Ray Photoelectron Spectroscopy anatomical layer calcium phosphate titanium dioxide |
| Content Type | Text |
| Resource Type | Article |
