| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing an alumina porous structure having a cell size capable of forming a pore size in the order of microns by using a method for preparing a porous anodic oxide film. SOLUTION: The method of manufacturing the alumina porous structure utilizes anodic oxidation action performed by soaking aluminum in an electrolyte. The electrolyte has a dielectric breakdown voltage higher than the voltage programmed for the anodic oxidation, provided that the programmed voltage is≥200 V. The method has a step of applying voltage increased at a rate of 0.2 to 5 V/sec up to the programmed voltage. Under the electrolyte condition used in the step, a zone in which the resistance increases as the voltage increases and a zone in which the resistance decreases as the voltage increases can be observed, and a maximum value of resistance can be observed. COPYRIGHT: (C)2008,JPO&INPIT
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