| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the corrosion resistance of magnesium or a magnesium alloy without deteriorating the fatigue strength of the magnesium material. Ž<P>SOLUTION: An anodization magnesium material includes: a magnesium base material 1; and an anodization film 2 formed on the surface of the magnesium base material 1. The magnesium base material 1 has a base material fined layer 3 at least in the part directly below the anodization film 2. The maximum grain size of the fined crystal grains in the base material fined layer 3 is ≤10 μm. The magnesium base material 1 is beforehand subjected to fining treatment and is then subjected to anodization treatment, thus the decrease rate of its fatigue strength caused by anodization can be reduced. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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