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Bioactive Hydroxyapatite/Calcium Silicate Composites Obtained by Fast Hot Pressing: Structure and Flexural Strength

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Abstract:

The present work deals with the preparation and characterization of ceramic composites for the substitution of load-bearing bone portions, made of hydroxyapatite (HA) and bioactive β- calcium silicate (β-Ca2SiO4) as a reinforcing phase. The composite materials were prepared by Fast Hot-Pressing technique (FHP), which allowed the rapid sintering of monolithic ceramics at temperatures up to 1500 °C, well above the commonly adopted temperatures for sintering of hydroxyapatite (1200-1300 °C), in order to achieve the densification of the reinforcing phase also. XRD analysis reported no formation of secondary phases other than HA and β-Ca2SiO4, after FHP cycles. Flexural strength tests were performed on selected samples sintered at different temperatures: the composite materials exhibited increased mechanical resistance compared to samples constituted of HA only. These preliminary results confirmed that composites of HA and β- Ca2SiO4 are promising for the development of bioactive load-bearing ceramic bone substitutes.

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Periodical:

Key Engineering Materials (Volumes 361-363)

Pages:

423-426

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.361-363.423

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Online since:

November 2007

Authors:

Simone Sprio, Anna Tampieri, Elena Landi, Gian Carlo Celotti, Daniele Dalle Fabbriche

Keywords:

Calcium Silicate, Composite, Flexural Strength, Hot-Pressing, Hydroxyapatite (HAP)

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] M. Inuzuka, S. Nakamura, S. Kishi, K. Yoshida, K. Hashimoto, Y. Toda and K. Yamashita: Solid State Ionics Vol. 172 (2004), p.509.

DOI: 10.1016/j.ssi.2004.01.054

Google Scholar

[2] V.V. Silva, F.S. Lameiras and R.Z. Domingues: Ceramics International Vol. 27 (2001), p.615.

Google Scholar

[3] B. Viswanath and N. Ravishankar: Scripta Materialia Vol. 55 (2006), p.863.

Google Scholar

[4] H. Oonishi, L. Hench, J. Wilson, F. Sugihara, E. Tsuji, M. Matsuura, S. Kin, T. Yamamoto and S. Mizokawa: J. Biomed. Mat. Res. Vol. 51 (2000), p.37.

DOI: 10.1002/(sici)1097-4636(200007)51:1<37::aid-jbm6>3.0.co;2-t

Google Scholar

[5] Z. Gou, J. Chang, W. Zhai : J. Eu. Cer. Soc. Vol. 25 (2005), p.1507.

Google Scholar

[6] L.H. Long, L.D. Chen, S.Q. Bai, J. Chang and K.L. Lin: J. Eu. Cer. Soc. Vol. 26 (2006), p.1701.

Google Scholar