Surface modification of titanium by hydrothermal treatment

被引：0

作者：

Ueda, Masato ^{[1
]}

Matsunaga, Ryoichi ^{[2
]}

Ikeda, Masahiko ^{[1
]}

Ogawa, Michiharu ^{[3
]}

机构：

[1] Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka

[2] Kansai University, Suita, Osaka

[3] R and D Laboratory, Daido Co, Ltd., Nagoya, Aichi

来源：

Keikinzoku/Journal of Japan Institute of Light Metals | 2008年 / 58卷 / 11期

关键词：

Bioactivity; Hydroxyapatite; Surface modification; Titanium; Titanium oxide;

D O I：

10.2464/jilm.58.599

中图分类号：

学科分类号：

摘要：

The chemical-hydrothermal combined synthesis of TiO 2 and CaTiO 3 films on pure Ti substrates was examined with a focus on crystallinity and surface morphology of the films. Pure Ti disks were chemically treated with H 2O 2/HNO 3 solutions at 353 K for 5-60 min in order to introduce a TiO 2 layer with low crystallinity on the surface. The samples were then hydrothermally treated in an autoclave at 453 K for 12 h. Anatase-type TiO 2 and perovskite-type CaTiO 3 films with high crystallinity were obtained upon treatment with distilled water and an aqueous solution of Ca(OH) 2, respectively. Cracks in the TiO 2 precursor films disappeared after hydrothermal treatment. Uniform and crack-free films could be obtained by the present process. In addition, in vitro formation of hydroxyapatite (HAp) on the films was investigated. Obtained samples were immersed in SBF (Simulated Body Fluid), adjusted to 310K. A light HAp precipitate could be observed on non-surface modified Ti after six days of immersion. In contrast, precipitate formed after only two days on the present oxide film. The present surface modification was confirmed to drastically promote deposition of HAp on the surface of Ti.

引用

页码：599 / 603

页数：4

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