| Project/Area Number |
23700553
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Biomedical engineering/Biological material science
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| Research Institution | Tohoku University |
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Principal Investigator |
NAKAI Masaaki 東北大学, 金属材料研究所, 准教授 (20431603)
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| Research Collaborator |
TODAKA Yoshikazu 豊橋技術科学大学, 工学研究科, 准教授 (50345956)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | チタン合金 / 強加工 / 耐食性 / 細胞毒性 |
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| Research Abstract |
A specific phase that is not etched during etching because of higher corrosion resistance to an etching solution is formed in a biomedical β-type titanium alloy, Ti-29Nb-13Ta-4.6Zr, subjected to high pressure torsion. Higher corrosion resistance of the specific phase than that of matrix was elucidated in this study. It is found that the alloying element distribution in the specific phase is different from that in the matrix; the alloying element is distributed more homogeneously in the specific phase than the matrix. This homogeneous element distribution is considered to be obtained by strong mechanical stir of high pressure torsion, and to cause higher corrosion resistance of the specific phase than that of the matrix.
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