A functionally graded titanium/hydroxyapatite film obtained by sputtering
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A functionally graded film of titanium/hydroxyapatite (HA) was prepared on a titanium substrate using a radio frequency magnetron sputtering. The ratio of titanium to HA was controlled by moving the target shutter. The film was composed of five layers, with overall film thickness of 1 μm. The HA was concentrated close to the surface, while the titanium concentration increased with proximity to the substrate. The bonding strength between the film and the substrate was 15.2 MPa in a pull-out test and the critical load from a scratch test was 58.85 mN. The corresponding values of a pure HA sputtered film were 8.0 MPa and 38.47 mN, respectively. The bonding strength of a pure HA plasma spray coating was 10.4 MPa in the pull-out test. The graded film and the pure HA film were sputter-coated to a thickness of 1 μm on titanium columns (10 mm in length and 4 mm in diameter). These columns were implanted in diaphyses of the femora of six adult dogs and a push-out test was carried out after 2, 4, and 12 weeks. After 12 weeks, the push-out strengths of the graded film, the pure HA film and the non-coated columns were 3.7, 3.5, and 1.0 MPa.
- Practical New Material Association, “Practical New Material Technology Handbook” (TSC Publisher Co., Ltd. Tokyo) (1996) 123-129.
- M. Niino and S. Maeda, J. Functional Material Tokyo, January (1990) 22-28.
- Society of Applied Physics, “Thin Film Fabrication Handbook” (Kyoritsu Publishing Co., Ltd., Tokyo, 1991).
- F. Watari, A. Yokoyama, F. Saso, M. Uo and T. Kawasaki, “Proceedings of the 3rd International Symposium On Structural and Functional Gradient Materials” (1995) 1-6.
- F. Saso, A. Yokoyama, F. Watari and T. Kawasaki, Hokkaido J. Dent. Sci. 18 (1997) 85-104.
- F. Watari, A. Yokoyama, H. Matsuno, F. Saso, M. Uo and T. Kawasaki, Mater. Sci. Forum 308-311 (1999) 356-361.
- R. V. Stuart, “Vacuum Technology, Thin Film and Sputtering” (Academic Press Inc., New York, 1983).
- K. De Groot, J. G. C. Wolke and J. A. Jansen, “Proceedings of the Institute of Mechanical Engineers” Part H, 212 (1998) 137-147.
- K. Ozeki, I. Nishimura and T. Yuhta, “Proceedings of the Symposium On Precision Engineering” Tokyo (1992) 977-978.
- H. Leiste, M. StÜber, V. Schier and H. Holleck, Mater. Sci. Forum 308-311 (1999) 467-475.
- P. Benjamin and C. Weaver, “Proceedings of the Royal Society of London, Series A” 254 (1960) 163.
- K. Ozeki, T. Yuhta, H. Aoki, I. Nishimura and Y. Fukui, Bio-Med. Mat. Eng. 10 (2000) 221-227.
- K. Ozeki, T. Yuhta, H. Aoki, I. Nishimura and Y. Fukui, Bio-Med. Mat. Eng. 11 (2001) 63-68.
- T. Li, J. Lee, T. Kobayashi and H. Aoki, J. Mater. Sci.: Mater. Med. 7 (1996) 355-357.
- A functionally graded titanium/hydroxyapatite film obtained by sputtering
Journal of Materials Science: Materials in Medicine
Volume 13, Issue 3 , pp 253-258
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- 1. Applied Systems Engineering, Graduate School of Science and Engineering, Tokyo Denki University, Ishizaka, Hatoyama, Hiki, Saitama, 350-0394, Japan
- 2. Frontier Research and Development Center, Tokyo Denki University, Ishizaka, Hatoyama, Hiki, Saitama, 350-0394, Japan
- 3. Department of Biomedical Engineering, Hokkaido University, Kita-13 Nishi-8, Kita-ku, Sapporo, 060-8628, Japan