| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a structure having regularly arrayed recesses without using a compound of highly toxic hexavalent chromic acid compound. SOLUTION: The method for producing the fine structure having micropores on its surface comprises the steps of: preparing an aluminum member comprising an aluminum substrate and an anodic oxide film containing micropores formed on the surface of the aluminum substrate; removing the film by using an alumina-dissolving solution which contains at least one compound selected from the group consisting of nitric acid, chromium hydroxide, phosphoric acid, a zirconium compound, a titanium compound, a lithium salt, a cerium salt, a magnesium salt, sodium silicofluoride, zinc fluoride, a manganese compound, a molybdenum compound, a magnesium compound and a simple halogen, contains no chromic compound, and dissolves alumina but dissolves no aluminum; and subsequently anodizing the aluminum. COPYRIGHT: (C)2007,JPO&INPIT
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