Bioactive titania gel layers formed by chemical treatment of Ti substrate with a H2O2/HCl solution

被引：237
作者：
Wang, XX [1 ]
Hayakawa, S
Tsuru, K
Osaka, A
机构：
[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
[2] Okayama Univ, Fac Engn, Biomat Lab, Okayama 7008530, Japan
来源：
BIOMATERIALS | 2002年 / 23卷 / 05期
基金：
日本科学技术振兴机构;
关键词：
titanium; surface modification; apatite deposition; bioactivity; titania gel;
D O I：
10.1016/S0142-9612(01)00254-X
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
An amorphous titania gel layer was formed on the titanium surface after the titanium specimen was treated with a H2O2/0.1 M HCl solution tit 80degreesC. The thickness of the get layer increased almost linearly With the period of the treatment. A Subsequent heat treatment above 300degreesC transformed gradually the amorphous gel to the anatase crystal structure and the rutile started to appear after heat treatment at 600degreesC. Meanwhile, the densification of the gel occurred significantly after heat treatment above 700degreesC. e Similar to the sol-gel derived titania gel coatings, titania gel layers obtained in the present study exhibited in vitro apatite deposition C ability after the gel layers exceeded a minimum thickness (0.2 mum) and was subsequently heated in a proper temperature range (400-600degreesC). (C) 2002 Elsevier Science Ltd. All rights reserved.
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收藏
页码：1353 / 1357
页数：5
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