( 南京航空航天大学 材料科学与技术学院， 南京 210016)
摘 要: 以硫酸和氢氟酸为电解液，采用恒压阳极氧化方式， 在TA1表面获得多孔TiO2膜，并研究了电解液对TA1表面TiO2多孔膜形态和晶型的影响规律。利用场发射扫描电镜和X射线衍射仪观察了多孔膜的形貌和结构， 并对不同晶型多孔TiO2膜的形成机理进行了初步的探讨。结果表明： 在硫酸电解液中， 通过阳极氧化能够在TA1表面直接形成锐钛型和金红石型TiO2多孔膜， 且孔径为100～200 nm； 在氢氟酸电解液中， TA1表面获得了大面积的非晶纳米多孔TiO2结构， 孔径为10～50 nm。
关键字: 阳极氧化； TiO2多孔膜； 电解液
on pure titanium
（ College of Materials Science and Technology,
Nanjing University of Aeronautics and Astronautics，Nanjing 210016, China）
Abstract: The TiO2 porous film was prepared by constant voltage anodic oxidation on the surface of pure titanium using sulphuric acid and hydrofluoric acid as electrolytes. The effects of the electrolytes on the morphologies and crystallization of the TiO2 porous film were studied, and the forming mechanism of TiO2 porous film and its crystallization were discussed. The morphologies and the crystallization of the film were analyzed with field emission scanning electron microscope(FESEM) and X-ray diffractometer(XRD). The results show that the anatase and rutile TiO2 porous films form directly on the surface of pure titanium in the sulphuric acid, and the aperture size is 100-200 nm. While the mass amorphous nano-porous TiO2 films are gained in the hydrofluoric acid, and the aperture size is 10-50 nm.
Key words: anodic oxidation; TiO2 porous film; electrolyte
