The purpose of surface modification of titanium and its alloys is the formation of a stiffening layer and in the improvement of seizure. If the surface layer is an anatarse type TiO
2, photocatalysis can occur in titanium alloys. The substrates used in this study were CP-Ti, α+β type Ti-6Al-4V, and β type Ti-15V-3Cr-3Sn-3Al. In the pretreatment, an alkaline-titanate layer was integrated with the substrates through 5 kmol•m
-3-NaOH or -KOH treatments at 333 K for 345.6 ks. Since the oxidizing was done in a suitable atmosphere and temperature, photocatalysis occurred via ultraviolet irradiation along with that generated by the anatarse type TiO
2. The photocatalysis of the α type alloy that generates anatarse type TiO
2 easily is superior to that of the β type alloy. In addition, the α+β 2 phase structure alloy was superior in photocatalysis to the α single phase alloy.
抄録全体を表示