Hydroxyapatite coatings on a 3D porous surface using thermal substrate method
Hydroxyapatite coatings on a 3D porous surface using thermal substrate method
复制标题
DOI：
10.2320/matertrans.46.1633
复制
发表时间：
2005-07-01
影响因子：
1.2
通讯作者：
Pilliar, RM
中科院分区：
文献类型：
--
作者：
Kuroda, K;Nakamoto, S;Pilliar, RM
使用热基底方法获得羟基磷灰石（HAp）涂覆的膜，其中使用含有Ca 2+和PO 4（3-）离子的pH = 7或8的水溶液在多孔表面基底上存款涂层，所述多孔表面基底通过在固体商业纯钛（cpTi）基底上烧结44-150 μ m尺寸的Ti 6 Al 4 V粉末而形成。所用的HAp涂覆条件为：涂覆时间=类似于900秒，基底温度等于373或393 K。在pH = 7的溶液中在373 K下持续900 s和在pH = 8的溶液中在393 K下持续300 s形成的涂层表明，Ti6 Al 4V烧结颗粒的所有表面（正面和背面两者）和基础cpTi基底都被HAp覆盖，并且它们保持其原始的开孔几何形状。与平面cpTi样品相比，多孔表面样品上沉淀的HAp似乎更致密。使用适当的pH值控制的热基板的方法，基板加热温度和时间是有效的形成HAp涂层粉末烧结样品具有复杂的地形。
Hydroxyapatite (HAp) coated films were obtained using a thermal substrate method, whereby an aqueous solution at pH = 7 or 8 containing Ca2+ and PO4 (3-) ions was used to deposit a coating on porous-surfaces substrates formed by sintering 44-150 mu m-sized Ti6Al4V powders on a solid commercially pure titanium (cpTi) base. The HAp coating conditions used were: coating time = similar to 900s and substrate temperature equal to 373 or 393 K. Coatings formed in a pH = 7 solution at 373 K for 900 s and in a pH = 8 solution at 393 K for 300 s showed that all of the surfaces of the Ti6Al4V sintered particles (both front and back faces) and the base cpTi substrate were covered with HAp, and that they maintained their original open-pored geometry. The precipitated HAp appeared to be denser on porous-surfaced samples compared with plain-surfaced cpTi samples. Use of the thermal substrate method with appropriate pH control, and substrate heating temperature and time was effective for forming HAp coatings on powder-sintered samples with a complex topography.