| Project/Area Number |
16K18230
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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 |
Physical properties of metals/Metal-base materials
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Okada Shusuke 国立研究開発法人産業技術総合研究所, 磁性粉末冶金研究センター, 主任研究員 (90712480)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 磁石 / 還元拡散法 / Sm2Fe17N3 / Sm-Fe-N / 希土類磁石 / 溶融塩 / Sm-Fe-N磁石 |
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| Outline of Final Research Achievements |
This study aims to synthesis a theoretical single-domain sized Sm2Fe17N3 powder, which is about 0.3μm, with very high coercivity than ever.
The following things were clarified by this study. [1] Sm2Fe17 fine particle was formed thorough the reduction of Sm oxide with Ca and diffusion of the reduced Sm into Fe particle. Thus, synthesis of 0.3μm sized Sm2Fe17N3 powder requires the smaller Fe fine powder. [2] 0.1μm sized Fe fine powder was newly synthesized with hydrogen reduction of sintering-tolerant cubic hematite using calcium nitrate. [3] 0.3μm sized Sm2Fe17 powder was synthesized with a newly developed low-temperature reduction-diffusion technique using molten salt.
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