| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
The Alkali and heat treatment on Ti and its alloys is one of the surface treatments to improve biocompatibility of metals and alloys applied as biomaterials. Conventionally, the process is performed without potential control. In the present study, the authors examined the alkali and heat treatment on Ti-6Al-4V alloy with potential pulse polarization, to improve osseointegration and to suppress the release of harmful metallic ions.Regardless of potential control, fine network structures of nano-scale were generated on the surface of alkali and heat treated samples. The surface layers were identified as sodium titanate. The network structure formed by potential pulse polarization was finer and thinner than that formed on the immersed sample. The V content of sample with potential pulse polarization was less than that of sample immersed in the NaOH solution without potential pulse polarization.
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