| 摘要 |
PURPOSE:To obtain a thin film body of Al oxide having superior adsorption activity, heat resistance and corrosion resistance by anodically oxidizing Al or an Al alloy so that pores in formed porous layers communicate with the outside through holes in formed layers having an acicular structure. CONSTITUTION:Al or an Al alloy is anodically oxidized by a prescribed method to obtain a thin film body 1 of Al oxide having no Al or Al alloy layer. The body 1 is composed essentially of layers 2 having an acicular structure and porous layers 3. Pores 3a in the layers 3 communicate with the outside through holes 2a, 2b in the layers 2. The body 1 has superior adsorption activity, heat resistance and corrosion resistance.
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