| 摘要 |
PROBLEM TO BE SOLVED: To improve adhesiveness of an titanium-nickel alloy to be bonded onto the other material, by forming an anodic oxide film on the surface of the titanium-nickel alloy after removing an oxide film formed on the surface of the titanium-nickel alloy. SOLUTION: This method comprises removing the formed oxide film 2 on the surface of the titanium-nickel alloy 1 by immersing the alloy in a mixed aqueous solution of hydrofluoric acid and nitric acid at an atmospheric bath temperature for a predetermined time, and anodizing the alloy 1 of which the oxide film 2 has been removed, in a sodium hydroxide solution to form an anodic oxide film on the surface of the alloy.
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