| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2018: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2017: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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| Outline of Final Research Achievements |
A combinatorial method was used to search and evaluate the physical properties of highly formable shape memory alloys. These alloys become metallic glass when they are amorphous state, and after crystallization they show shape memory effect. In this research, we succeeded in searching for new Ti-Ni-Hf high formable shape memory alloys. In addition, library fabrication methods and combinatorial evaluation for thermal properties and biocompatibility by using anodic polarization test were established evaluation of these alloys. We evaluated the biocompatibility of Ti-Ni-Zr and Ti-Ni-Cu highly formable shape memory alloys and clarified that the components of the passivation film differ depending on the alloy system. It was clarified that the Ti-Ni-Cu has excellent biocompatibility.
Finally, a foldable pipe structure was produced using this alloy, and it showed excellent formability and shape memory characteristics.
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