| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for forming an anodic oxide film, in the object to be treated with a complicated shape, capable of realizing high speed treatment by a simple method and achieving the uniformization of film thickness.SOLUTION: Provided is a method for forming an anodic oxide film including: first conduction steps S1, S2 of disposing the metallic object to be treated as an anode in an electrolytic solution together with a cathode, conducting the first direct current A1 between both the electrodes in such a manner that the temperature difference between the respective parts in the surface to be treated reaches below a pre-set prescribed value, and holding the first direct current A1; and at least one second conduction step S3, S4 of conducting the second direct current A2 in a value higher than the first direct current A1 between both the electrodes.</p> |
