PRODUCTION METHOD OF NICKEL-TITANIUM ALLOY HAVING TITANIUM DIOXIDE FILM

To provide a production method of NiTi alloy having a TiO2 film, in which elution of a Ni ion can be fully suppressed.SOLUTION: A production method of NiTi alloy having a TiO2 film includes: an immersion step in which an NiTi alloy is immersed in an electrolyte that can elute Ni from the surface of...

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Hauptverfasser:	TANIHO HIROKI, YAMAZAKI HANAKO, OTSU TADASHI, KOMAI SHIORI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	APPARATUS THEREFOR CHEMISTRY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
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Beschreibung
Zusammenfassung:	To provide a production method of NiTi alloy having a TiO2 film, in which elution of a Ni ion can be fully suppressed.SOLUTION: A production method of NiTi alloy having a TiO2 film includes: an immersion step in which an NiTi alloy is immersed in an electrolyte that can elute Ni from the surface of the NiTi alloy; and an anodization step in which an anodization processing is performed for forming the TiO2 film on the surface of the NiTi alloy by applying a pulse voltage intermittently to the NiTi alloy immersed in the electrolyte in the immersion step.SELECTED DRAWING: Figure 2 【課題】Ｎｉイオンの溶出を十分に抑制することが可能なＴｉＯ２皮膜を有するＮｉＴｉ合金の製造方法を提供する。【解決手段】ＴｉＯ２皮膜を有するＮｉＴｉ合金の製造方法は、ＮｉＴｉ合金の表面からＮｉを溶出させることが可能な電解液中にＮｉＴｉ合金を浸漬させる浸漬工程と、浸漬工程で電解液中に浸漬されたＮｉＴｉ合金に対してパルス電圧を間欠的に印加することで、ＮｉＴｉ合金の表面にＴｉＯ２皮膜を形成する陽極酸化処理を行う陽極酸化工程と、を含む。【選択図】図２