论文部分内容阅读
采用微弧氧化处理技术,在纯钛TA2表面制备了含钙磷的多孔复合氧化膜,用SEM、XRD、EPMA等分析了电解液成分对氧化膜形貌、成分、相构成及生物活性的影响。结果表明:纯钛表面微弧氧化后原位生成的含钙磷多孔性复合氧化膜由锐钛矿相TiO2,金红石相TiO2和基体Ti组成;随电解液中钙磷摩尔比(Ca/P)值的增大,表面孔洞数量增多、直径变小,膜中Ca/P值增大,锐钛矿相TiO2减少、金红石相TiO2增多;当电解液中Ca/P=5时得到的氧化膜的Ca/P值为1.528,将该样品经碱液处理后再在快速钙化溶液(FCS)中浸泡2 d后即有羟基磷灰石HA形成,表明其具有良好的生物活性。
The micro-arc oxidation process was used to prepare porous composite oxide film containing calcium and phosphorus on the surface of pure titanium TA2. The effects of electrolyte composition on the morphology, composition, phase composition and biological activity of the oxide film were analyzed by SEM, XRD and EPMA . The results show that the porous calcium / phosphorus composite oxide film formed by in-situ micro-arc oxidation of pure titanium consists of anatase TiO2, rutile TiO2 and Ti matrix. With the molar ratio of calcium to phosphorus (Ca / P) As the value increases, the number of surface pores increases, the diameter decreases, the Ca / P value in the film increases, the amount of anatase TiO2 decreases and the amount of rutile TiO2 increases. When the Ca / P ratio in the electrolyte is 5, the oxide film Ca / P value of 1.528. After the sample was treated with lye and immersed in fast calcification solution (FCS) for 2 days, hydroxyapatite HA was formed, indicating that it has good biological activity.