【摘要】 采用溶胶-凝胶法在NiTi合金基体上制备出TiO2-SiO2-HAP梯度生物活性薄膜,通过仿生合成进一步制备了TiO2-SiO2-HAP/HAP双层生物活性薄膜。SEM、XRD和FTIR对复合薄膜的测试结果表明,外层的HAP薄膜呈多孔网状;电化学腐蚀测试表明,与TiO2-SiO2-HAP梯度生物活性薄膜相比,TiO2-SiO2-HAP/HAP双层生物活性薄膜的抗腐蚀性进一步增强。更多还原

【Abstract】 This paper reports the preparation of TiO₂-SiO₂-HAP/HAP bilayer bioactive film on NiTi alloy substrate by Sol-Gel method.It is formed on the basis of TiO₂-SiO₂-HAP gradient bioactive film through biomimetic synthesis process.Characterization by SEM、XRD and FTIR demonstrates that the outer HAP appears porous and net structure.Electro-chemical measurement reveals that the corrosion resistance of TiO₂-SiO₂-HAP/HAP bilayer bioactive film is better than that of the TiO₂-SiO₂-HAP gradient bioactive film.更多还原