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Citation: GAO Yan-Jiao, LIU Rong-Fang, XIAO Xiu-Feng. Preparation and Bioactivity of Silica Films Coated on Titanium[J]. Chinese Journal of Applied Chemistry, ;2006, 23(3): 313-318. shu

Preparation and Bioactivity of Silica Films Coated on Titanium

1.
College of Chemistry and Materials, Fujian Normal University, Fuzhou 350007

Corresponding author: LIU Rong-Fang,
Received Date: 8 May 2005
Available Online: 17 July 2005
Fund Project: 福建省发改委资助项目(2004[477])资助 (2004[477])

Silica films were prepared on titanium substrate by a sol-gel method.The influence of different factors on the quality of silica films is discussed in this paper.The surface composition,microstructure and surface morphology of the films were characterized by X-ray diffraction(XRD),fourier transform infrared spectrometry(FTIR) and scanning electron microscopy(SEM),respectively.The results show that the sol prepared at pH 3 and a n(TEOS):n(H₂O):n(EtOH) ratio of 1:4:11 and aged for 10 h at 70℃ was suitable for plating silica flims on titanium substrate.The silica films were crackfree,uniform and porous.The pore size distributions was between 2 and 3 μm.After immersing the silica films in simulated body fluid(1.5SBF) for 10 d,the rapid depositon of spherical carbonated hydroxyapatite(CHA) on the surface of the films showed that the bioactivity of silica films was very good.
- silica film,
- sol-gel,
- surface morphology,
- bioactivity,
- carbonated hydroxyapatite
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