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2001•Journal of Inorganic MaterialsRequires access

Microstructure and in vitro Bioactivity of 50Ti/HA Biocomposite

Ning Cong

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Abstract

The 50Ti/HA biocomposite was fabricated by hot-pressing technique. The microstructure and in vitro bioactivity of the biocomposite were investigated. The XRD results show that some reactions between titanium and hydroxyapatite occur in the biocomposite during sintering at 1200℃. The main reaction products are Ti2O, CaTiO3, CaO and a TiP-like phase. A continuous hydroxyapatite film can be formed on the surface of the biocomposite when it is immersed in the SBF for one day, and the thickness of the apatite film increases with the increase in immersion time. The apatite film has a preference along the orientation of [001] and its formation is mainly due to the present of Ti2O phase in the composite.

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What this paper is about

The 50Ti/HA biocomposite was fabricated by hot-pressing technique. The microstructure and in vitro bioactivity of the biocomposite were investigated. The XRD results show that some reactions between titanium and hydroxyapatite occur in the biocomposite during sintering at 1200℃. The main reaction products are Ti2O, CaTiO3, CaO and a TiP-like phase. A continuous hydroxyapatite film can be formed on the surface of the biocomposite when it is immersed in the SBF for one day, and the thickness of the apatite film increases with the increase in immersion time. The apatite film has a preference along the orientation of [001] and its formation is mainly due to the present of Ti2O phase in the composite.

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Available abstract

The 50Ti/HA biocomposite was fabricated by hot-pressing technique. The microstructure and in vitro bioactivity of the biocomposite were investigated. The XRD results show that some reactions between titanium and hydroxyapatite occur in the biocomposite during sintering at 1200℃. The main reaction products are Ti2O, CaTiO3, CaO and a TiP-like phase. A continuous hydroxyapatite film can be formed on the surface of the biocomposite when it is immersed in the SBF for one day, and the thickness of the apatite film increases with the increase in immersion time. The apatite film has a preference along the orientation of [001] and its formation is mainly due to the present of Ti2O phase in the composite.

Key concepts: Biocomposite, Materials science, Microstructure, Apatite, Composite material, Sintering, Titanium, Composite number

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