阳极氧化工艺制备氧化铝模板

Preparation of alumina template by anodic oxidization

多孔氧化铝模板是一种用于制作纳米结构材料的模板.为了制作出理想的模板,采用不同的阳极氧化工艺制备多孔氧化铝模板,通过改变工艺参数研究了模板孔径的变化规律,结果表明,在适宜条件下,纳米级氧化铝模板具有六方紧密堆积柱状结构,在每个六棱柱的中心有一个与膜表面垂直的圆柱孔.在一定范围内,随着氧化电压、电流密度、反应温度、铝片纯度的增加氧化铝模板的孔径也随之增加.

In order to fabricate ideal templates used for the fabrication of nano-structural materials, different anodic oxidization processes were employed to prepare porous alumina templates. The variation of diameter and configuration of these templates was studied through changing processing parameters. The result shows that with appropriate conditions, the nanometer-scale alumina template has the structure of ordered array of columnar hexagonal cells, and there is a cylindrical hole vertical to the template surface in the center of each cell. Diameter of the porous template increases with the increase of oxidation voltage, intensity of electric current, reaction temperature and the purity of the aluminum sheet within certain conditions.