为克服钛合金生物膜层单一相的缺陷,以Ti6A14V合金为基体,用微弧氧化法制得具有双相钙磷复合陶瓷膜层(BCP)的钛合金器件.通过控制工作液成分制得由不同比例的β-磷酸三钙(β-TCP)和羟基磷灰石(HA)组成的多孔性复合膜层.研究了电源占空比对BCP膜孔隙率和孔径大小的影响.采用能谱仪和X射线衍射仪分析了BCP膜层的组成与构相.通过模拟体液浸泡(SBF)和生物体植入试验,研究了BCP膜的生物相容性.结果表明,提高BCP膜层中的HA含量,有利于类骨物质的生成；而提高β-TCP含量,能使膜层中类骨物质的形成速率加快.当n(HA)/n(β-TCP)=6:4时,BCP膜的生物相容性最佳.
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