| Project/Area Number |
24360291
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Kyushu University |
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Principal Investigator |
ITAKURA Masaru 九州大学, 総合理工学研究科(研究院), 准教授 (20203078)
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| Co-Investigator(Kenkyū-buntansha) |
NISHIDA Minoru 九州大学, 大学院総合理工学研究院, 教授 (90183540)
MITSUHARA Masatoshi 九州大学, 大学院総合理工学研究院, 助教 (10514218)
NAKANO Masaki 長崎大学, 工学部, 准教授 (20274623)
FARJAMI Sahar 九州大学, 総合理工学研究科(研究院), 助教 (20588173)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
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| Keywords | ネオジム磁石 / 熱間加工磁石 / HDDR磁石 / 薄膜磁石 / 電子顕微鏡 / 結晶方位解析 / プリセッション電子回折 / 永久磁石材料 / 走査電子顕微鏡 / 透過電子顕微鏡 / EDS組成分析 / 結晶配向組織 / 組織制御 |
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| Outline of Final Research Achievements |
Three kinds of anisotropic Nd-Fe-B magnetic materials were investigated by the real-dimensional ultra-microscopy analysis in order to realize the optimum microcrystalline textures with higher remanences and coercivities, and the following three researches were carried out: 1. Control of the microstructural factors affecting on the oriented microcrystalline texture in the HDDR-processed Nd-Fe-B magnets, 2. Control of the microstructural factors affecting on the oriented microcrystalline texture in the hot-deformed Nd-Fe-B magnet, 3. Analysis of a nanocomposite texture in the PLD-made Nd-Fe-B thick film magnet. One of notable results is to realize the crystallographic orientation analysis of sub-micron sized Nd2Fe14B crystal grains by the precession electron diffraction technique in TEM, and to clarify some microstructural factors controlling the degrees of c-axis orientation, or the remanences.
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