Densification and Strengthening of Tricalcium Phosphate/Titania Composite by Hot Pressing


Article Preview

Tricalcium phosphate [TCP, β-Ca3(PO4)2]/titania composite having high mechanical properties was prepared and characterized. The TiO2 and HAp powders, as starting materials, were synthesized by precipitation and hydrothermal methods, respectively. The sintered β-TCP/TiO2 composite was prepared by hot pressing at 1000°C for 30 min under the pressure of 30 MPa in N2 atmosphere or by pressureless sintering at 1200°C for 2 h in air with moisture protection. The influence of sintering condition on the microstructures and mechanical properties of the composite was investigated. During the sintering process, hydroxyapatite used as a starting material was decomposed to β-TCP and CaTiO3 at elevated temperature because TiO2 could accelerate the decomposition of hydroxyapatite. The hot-pressed composite with 98% of sintered density showed high hardnessvalue of 1080 Hv compared with the pure hydroxyapatite (600 Hv).



Key Engineering Materials (Volumes 317-318)

Edited by:

T. Ohji, T. Sekino and K. Niihara






J. K. Lee et al., "Densification and Strengthening of Tricalcium Phosphate/Titania Composite by Hot Pressing", Key Engineering Materials, Vols. 317-318, pp. 101-104, 2006

Online since:

August 2006




[1] M. Jarcho: Clin. Orthop. Relat. Res. Vol. 157 (1981), p.259.

[2] L.L. Hench and J. Wilson: Science Vol. 226 (1984), p.630.

[3] L. Hong, H.C. Xu and K. de Groot: J. Biomed. Mater. Res. Vol. 26 (1992), p.7.

[4] L.L. Hench: J. Am. Ceram. Soc. Vol. 81 (1998), p.1705.

[5] E. Milella, F. Cosentino, A. Licciulli and C. Massaro: Biomaterials Vol. 22 (2001), p.1425.

[6] C. Q. Ning and Y. Zhou: Biomaterials Vol. 23 (2002), p.2909.

[7] T. Matsuno, K. Watanabe, K. Ono and M. Koishi: J. Ceram. Soc. Jap. Vol. 104 (1996), p.945.

[8] K. Ioku, S. Yamauchi, H. Fujimori, S. Goto and M. Yoshimura: Solid State Ionic Vol. 151 (2002), p.147.

[9] K. de Groot, R. Geesink, C. Klein and P. Serekion: J. Biomed. Mater. Res. Vol. 21 (1987), p.1375.

[10] M. Shirkhanzadeh: J. Mater. Sci.: Mater. Med. Vol. 6 (1995), p.90.

[11] T. Brendel, A. Engel and C. Russel: J. Mater. Sci.: Mater. Med. Vol. 3 (1992), p.175.

[12] F.Z. Cui, Z.S. Luo and Q. Feng: J. Mater. Sci.: Mater. Med. Vol. 8 (1997), p.403.

[13] J.M. Wu and T.S. Yeh: J. Mater. Sci. Vol. 23 (1988), p.3771.

[14] N. Tamari, M. Mouri and L. Kondo: J. Ceram. Soc. Jap. Int. Ed. Vol. 95 (1987), p.758.

[15] K. Ioku, S. Somiya and M. Yoshimura: J. Ceram. Soc. Jap. Int. Ed. Vol. 99 (1991), p.191.

[16] D.S. Seo, H.C. Jung, J.K. Lee and H. Kim: J. Mater. Res. Vol. 18 (2003), p.571.

[17] J.L. Lacout, J. Assarane and J.C. Trombe: C.R. Acad. Sci. Paris Vol. 298I (1984), p.173.

[18] A.V. Tuan and R.B. Heimann: J. Mater. Sci. Lett. Vol. 16 (1997), p.1680.

[19] R.J. Brook: J. Am. Ceram. Soc. Vol. 52 (1969), p.339. G.

In order to see related information, you need to Login.