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采用微弧氧化技术在钛合金表面制备钛酸钡(BaTiO3)膜;分析极化处理后的BaTiO3膜表面生物活性,并探讨其诱导羟基磷灰石形成的机理。结果表明,BaTiO3膜极化后,在模拟体液中呈现出优于BaTiO3陶瓷块体的磷灰石诱导能力,其诱导磷灰石的能力与其表面的极性、粗糙多孔的表面形态、高的比表面积以及纳米晶特征有关;微弧氧化合成BaTiO3膜的细胞毒性小于等于1级,表示其具有好的生物相容性,且高电压制备的BaTiO3膜细胞增殖率比低电压制备的高。
The BaTiO3 film was prepared on the surface of titanium alloy by micro-arc oxidation technique. The surface bioactivity of the treated BaTiO3 film was analyzed and the mechanism of the formation of hydroxyapatite was discussed. The results show that the BaTiO3 films exhibit better apatite-inducing ability than the BaTiO3 ceramic blocks in the simulated body fluid after induced polarization. The ability of apatite to induce apatite is related to its surface polarity, rough porous surface morphology, high ratio Surface area and nanocrystalline features. The cytotoxicity of BaTiO3 membrane synthesized by micro-arc oxidation less than or equal to 1 indicates that it has good biocompatibility, and the cell proliferation rate of BaTiO3 membrane prepared by high voltage is higher than that of low voltage.