Preparation and Characterization of the Nano Powder for Al2O3-SiO2-CaF2 Glass by Homo-Precipitation Method


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The nano-powder of Al2O3-SiO2-CaF2 bio-glass was prepared by the homo-precipitation method with some inorganic salts containing Al3+, Ca2+, Na+, F-, SiO3 2+, Cl- as starting-reagents. The composition and characteristics of the powders were studied with XRD, EDAX, TEM and DTA. The results indicate that the prepared powder belongs to amorphous compounds containing Al, Ca, Si, O and F atoms and the size of particle is in the range of 30 ~ 70 nm. Adding citric acid and the well-controlled desiccation process can slightly improve the dispersing effect of the powders; the mixture ratio of the reagents rarely affects the characteristic of powder. The crystal phase CaF2 was precipitated firstly from the amorphous structure when the temperature is above 600°C, with the temperature rising, Al2SiO5 and Al4.4Si1.2O9.5 etc. crystal phases were precipitated sequentially.



Key Engineering Materials (Volumes 280-283)

Edited by:

Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li




G.C. Yuan et al., "Preparation and Characterization of the Nano Powder for Al2O3-SiO2-CaF2 Glass by Homo-Precipitation Method", Key Engineering Materials, Vols. 280-283, pp. 1643-1646, 2005

Online since:

February 2007




[1] J.W. Nicholson, T.P. Croll: Quintessence Int 28 (1997), p.705.

[2] J. Lewis, L. Nix: Biomaterials, Vol. 17-11 (1996), 1115-1120.

[3] J.W. Mclean, A.D. Wilson: Quint. Int., 25 (1994), p.113.

[4] R.G. Duan, K.M. Liang, S.R. Gu: J. Inorganic of Mater., Vol. 13-4 (1998), 593-598. (in Chinese).

[5] J.M. Meyer: Biomaterials, Vol. 19-8 (1998), p.19.

[6] Y.F. Wang, Y.H. Yan, H.L. Dai, M.J. Li: J. Wuhan Univ. of Tech., Vol. 17-3 (2002), pp.39-41.

[7] S.I. Kato: DE19, 526, 224. CA., Vol. 124-18 (1996), Pat. 242384z.

[8] J.G. Roeland: Dent. Materials, 12 (1996), p.88.

[9] L. Bernard, F. Yannick, Y.G. Jean: Dent. Materials, Vol. 14 (1998), p.59.

[10] L.L. Hench: J. American Ceramics Soc., Vol. 74-7 (1991), p.74.

[11] R. Pober, R. Giordano, S. Compbell: J. Dent. Res., 71 (1992), p.363.

[12] R.G. Hill, C. Goat: J. Am. Ceramics Soc., Vol. 75-4 (1992), p.778.

[13] M Goldman: Biomed Mater. Res., 19 (1985), pp.771-783.

[14] R.J.G. Moor, R.M.H. Verbeeck: Dent. Mater. 12 (1996), pp.88-95.

[15] K.M. Liang, R.G. Duan, S.R. Gu: J. Inorganic of Mater. Vol. 13-3 (1998), p.308. (in Chinese).

[16] G.C. Yuan, Z.Y. Lin, X.H. Zhang: Functional Mater. Vol. 16-Sup. (2001), p.593. (in Chinese).