2021 Fiscal Year Final Research Report
Control of grain-boundary microstructure using super gravitational field and elucidation of the principle
Project/Area Number |
19K23567
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Multi-year Fund |
Review Section |
0401:Materials engineering, chemical engineering, and related fields
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Research Institution | Tohoku University |
Principal Investigator |
Tokuda Makoto 東北大学, 金属材料研究所, 助教 (60849321)
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Project Period (FY) |
2019-08-30 – 2022-03-31
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Keywords | 超重力場 / 不均一性 / 平均構造解析 / チタン酸ストロンチウム |
Outline of Final Research Achievements |
The high acceleration fields of up to 1.0 × 106 G level in the high-temperature ultracentrifuge act on each atom as a mass-dependent volumetric force and induce sedimentation, diffusion, and structural changes in the material. High acceleration fields at 1.0 × 106 G level induce nanoscale inhomogeneous structural distortions within solid materials, but the inhomogeneous regions introduced are not well understood. In this study, we introduced ultracentrifuge-induced structural distortions in solid materials and evaluated the inhomogeneity and structure of the materials.
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Free Research Field |
物質プロセス
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Academic Significance and Societal Importance of the Research Achievements |
本研究は,「100万Gレベルもの重力場(加速度場)は材料科学においてどのような役割を持てるのか」を学術的「問い」に位置づけた.外場である重力場を利用し固体材料内に誘起されたナノスケールの不均一領域は未解明であり,その解析技術の開発は本研究の対象だけではなく,例えば放射線損傷による結晶構造の乱れ(メタミクト化)の解析など多くの構造的あるいは化学的な不均一領域をもつ材料の解析に応用できる.
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