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1 Materials Science Poland

1 2008

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Biomimetic growth of apatite on titania nanotube arrays fabricated by titanium anodization in NH4F/H2SO4 electrolyte

Tian T., Xiao Xiu-feng, She Hou-de, Liu Rong-fang

Materials Science Poland

2008

Vol. 26, No. 3

487--494

In the present work, the titania nanotube arrays was fabricated by anodizing titanium in NH4F/H2SO4 electrolyte. The crystal structure and the apatite-forming ability of the titania nanotube arrays were investigated. The samples were examined by ESEM, XRD and FT-IR. The results indicate that the crystal structure of the titania nanotube arrays occurred transformation from amorphous to anatase and rutile as the annealed temperature rised. The surface structure of the nanotube could enhance the bioactivity of titania. The bioactivity of titania nanotube arrays lies on its the crystal structure, ranked in following series: mixture of anatase and rutile structure > anatase > amorphous.