P-52 陽極酸化法によるTiO_2ナノチューブ合成とその擬似体液中における生体活性(金属材料,一般講演(ポスター発表),第59回日本歯科理工学会学術講演会)

概要

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In this study, self-organized TiO_2 nanotubes grown by anodization of commercially pure titanium (c.p. Ti) at 5 V or 10 V in NH_4F/NaC_1 electrolyte were investigated. The nanotube arrays were annealed at 450 ℃ for 3 h to convert the amorphous nanotubes to anatase, and subsequently immersed in simulated body fluid (SBF) at 37 ℃ for 0.5, 1 and 14 days. The purpose of this experiment was to evaluate the apatite-formation abilities of anodized nanotubular c.p. Ti with different tube diameters and lengths. It was found that the thickness of the Ca-P layer increases alongside increases in the applied potential for anodized c.p. Ti, and the average thickness of the Ca-P layer on c.p. Ti anodized at 5 V and 10 V was about 170 nm and 190 nm, respectively, after immersion in SBF for 14 days.
2012-03-25