Bioactive hydroxyapatire coating on titanium-niobium alloy through a sol-gel process

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Bioactive hydroxyapatire coating on titanium-niobium alloy through a sol-gel process

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/95465

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Title: Bioactive hydroxyapatire coating on titanium-niobium alloy through a sol-gel process
Author(s): Xiong, Jianyu; Li, Yun-Cang; Hodgson, Peter; Wen, Cui'e
Abstract: Hydroxyapatite (HA) was coated on the surface of a titanium-niobium (Ti-Nb) alloy by a sol-gel process. Triethyl phosphite and calcium nitrate were used as the phosphorus (P) and calcium (Ca) precursors respectively to prepare a Ca/P sol solution. The Ti-Nb alloy was dip-coated in the sol and heated at 600°C for 30 minutes. X-ray diffraction (XRD) analysis indicated the major phase constituent of the coating after heat treatment was HA. Scanning electron microscopy (SEM) observation showed that a few cracks were distributed on the HA coating. The in-vitro bioactivity of the HA coated Ti-Nb alloy was assessed using a cell culture of SaOS-2 osteoblast-like cells. The density of cell attachment was determined by MTT assay; the cell morphology was observed by SEM. Results indicated that the density of cell attachment on the surface of the Ti-Nb alloy was significantly increased by HA coating. Cell morphology observation showed that cells attached, spread and grew well on the HA coated surface. It can be concluded that the HA coating improved the in-vitro bioactivity of Ti-Nb alloy effectively.
Publication type: Journal article
Source: Materials Science Forum: Light Materials Technology 2009: selected papers from the 4th International Light Metals Technology Conference (LMT 2009), Surfers Paradise, Gold Coast, Queensland, Australia, 28 June - 01 July 2009, Vol. 618-619, pp. 325-328
Publication year: 2009
FOR Code(s): 0912 Materials Engineering; 1007 Nanotechnology
Keyword(s): Bioactivity; Coatings; Hydroxyapatite; Sol-gel; Titanium-niobium
Publisher: Trans Tech Publications
ISSN: 0255-5476 (series ISSN)
ISBN: 9780878493272, 0878493271
Publisher URL: http://dx.doi.org/10.4028/www.scientific.net/MSF.618-619.325
Peer reviewed