2013 Fiscal Year Final Research Report
Fabrication of Ti-Mg alloys with ultra-lightweight and high corrosion resistance by non-equilibrium process
| Project/Area Number |
24656401
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Structural/Functional materials
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| Research Institution | Tohoku University |
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Principal Investigator |
NIINOMI Mitsuo 東北大学, 金属材料研究所, 教授 (50126942)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAI Masaaki 東北大学, 金属材料研究所, 准教授 (20431603)
HIEDA Junko 東北大学, 金属材料研究所, 助教 (40566717)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | チタン－マグネシウム合金 / 直流マグネトロンスパッタ法 / 耐食性 / 生体適合性 |
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| Research Abstract |
Ti-xMg (x=0, 17, 33, 55, and 100 mass%) alloys, which can be applied to structural and biomedical materials, were fabricated by direct current magnetron sputtering. The crystal structures and surface chemical states of Ti-xMg alloys were investigated by X-ray diffraction method and X-ray photoelectron spectroscopy, respectively. In addition, dissolution amounts of Ti and Mg were evaluated by immersion in 0.9% NaCl at 310 K for 7days. The ability of bone formation was investigated by immersion in Hanks' solution at 310 K for 30 days. The dissolution amounts of Ti after immersion in 0.9% NaCl at 310 K for 7d were below detection limit, whereas the dissolution of Mg occurred from Ti-xMg alloy. The dissolution amounts of Mg increased in Ti-55Mg alloy and Mg. Calcium phosphate was precipitated on the surface of only Ti-33Mg alloy after immersion in Hanks' solution for 30 d.
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