Bioactive titania gel layers formed by chemical treatment of Ti substrate with a H2O2/HCl solution
Bioactive titania gel layers formed by chemical treatment of Ti substrate with a H2O2/HCl solution
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DOI：
10.1016/s0142-9612(01)00254-x
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发表时间：
2002-03-01
期刊：
影响因子：
14
通讯作者：
Osaka, A
中科院分区：
文献类型：
--
作者：
Wang, XX;Hayakawa, S;Osaka, A
在80 ℃下用H2 O2/0.1M HCl溶液处理钛样品后，在钛表面上形成无定形二氧化钛凝胶层。石墨层厚度随处理时间的延长几乎呈线性增加。随后在300 ℃以上进行热处理，使无定形凝胶逐渐转变为微晶结构，在600 ℃热处理后开始出现金红石。700 ℃以上热处理后，凝胶的致密化程度明显提高。e与溶胶-凝胶衍生的二氧化钛凝胶涂层类似，在本研究中获得的二氧化钛凝胶层在凝胶层超过最小厚度（0.2 μ m）并随后在适当的温度范围（400- 600 ℃）下加热后表现出体外磷灰石沉积能力。(C)2002爱思唯尔科技有限公司版权所有。
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.