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首页> 外文期刊>日本セラミックス協会学術論文誌 >A Novel Approach to Fabricate Hydroxyapatite Coating on Titanium Substrate in an Aqueous Solution
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A Novel Approach to Fabricate Hydroxyapatite Coating on Titanium Substrate in an Aqueous Solution

机译：在水溶液中钛基底上制备羟基磷灰石涂层的新方法

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摘要

3-Aminopropyltriethoxysilane (APTS) thin membranes with amino groups (positive surface) were successfully fabricated on pure titanium surfaces by the method of liquid phase processing. A two-step soaking procedure was employed to prepare HAp coating on the titanium surface modified with an APTS thin membrane. At the first step the negatively charged microparticles of calcium phosphate (CP) homogeneously formed in the supersaturated solution (1.5 SBF, pH =7.6) at 50 deg C were attracted to attach to the modified titanium substrate (positive) due to the electrostatic interaction (attractive), while no CP microparticles were observed on the unmodified titanium substrate. At the second step, after the growth of microparticles through consumption of Ca~(2+) and PO~(3-) in the solution (1.0 SBF, pH = 7.25, 37 deg C) the dense coating of hydroxyapatite was formed on the modified Ti substrate. The results verified our expectation that CP microparticles formed in the solution dominated the formation of hydroxyapatite on the substrate with positive surface potential.
机译：通过液相法成功地在纯钛表面上制备了具有氨基（正表面）的3-氨基丙基三乙氧基硅烷（APTS）薄膜。采用两步均热程序在用APTS薄膜改性的钛表面上制备HAp涂层。第一步，由于静电相互作用，在50摄氏度下在过饱和溶液（1.5 SBF，pH = 7.6）中均匀形成的带负电的磷酸钙（CP）微粒被吸引附着在改性钛基底上（正）吸引人的），而在未改性的钛基材上未观察到CP微粒。在第二步中，通过在溶液（1.0 SBF，pH = 7.25，37摄氏度）中消耗Ca〜（2+）和PO〜（3-）来生长微粒后，在表面形成了羟基磷灰石致密涂层。改性的钛基板。该结果证实了我们的期望，即溶液中形成的CP微粒以具有正表面电势的基质主导了羟基磷灰石的形成。

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