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采用微弧氧化和热处理复合技术,在钛表面制备了具有双层结构的榍石/氧化钛复合涂层。榍石/氧化钛复合涂层的外层是由微弧氧化涂层经热处理后晶化生成;而内层是由钛基底的氧化生成,并且氧化钛表现出不同的Ti,O原子比。由于钛基底的氧化,孔径在50~500 nm的微孔呈层状结构分布在涂层内层。与微弧氧化涂层相比,该复合涂层具有很好的磷灰石诱导能力,这是由于榍石沿着特定晶面和晶向与羟基磷灰石表现出良好的晶体学匹配关系,从而为磷灰石的成核和取向沉积过程提供良好的位点。
Micro-arc oxidation and heat treatment composite technology, prepared on the titanium surface with a double layer structure of stone / titanium oxide composite coating. The outer layer of the gallstone / titania composite coating is crystallized by the heat treatment of the microarc oxidation coating, while the inner layer is formed by the oxidation of the titanium substrate, and the titania exhibits different Ti and O atomic ratios. Due to the oxidation of the titanium substrate, pores with a diameter of 50-500 nm are distributed in the inner layer of the coating in a layered structure. The composite coating has very good apatite-inducing ability as compared with the micro-arc oxidation coating because of the good crystallographic matching of the kiwifruit with hydroxyapatite along the specific crystal plane and orientation, Thus providing a good site for the nucleation and orientation deposition of apatite.