Synthesis of shape-controlled rare earth alloy particles through the development of a wet synthesis technique

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K05072
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 26010:Metallic material properties-related
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Okada Shusuke 国立研究開発法人産業技術総合研究所, 材料・化学領域, 研究グループ長 (90712480)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 希土類合金 / 形状制御 / 溶融塩

Outline of Final Research Achievements

It was demonstrated that the synthesis of needle-shaped rare earth alloy particles by a low-temperature reduction-diffusion process using molten salts. In the study on the Sm-Fe system, the obtained needle-like rare earth alloy particles were found to have a crystal structure similar to the Sm2Fe14B phase, indicating that the low-temperature and wet production process has the potential to generate new metastable phase compounds.

Free Research Field

金属粉末合成

Academic Significance and Societal Importance of the Research Achievements

希土類合金は磁石など、非常に高機能な材料であるが、希土類元素の反応性の高さゆえに希土類合金粒子の形状を精密に制御することは達成されていなかった。本研究により針状の希土類合金粒子を合成できる可能性を示すことができた。これまでにない高機能な希土類合金粒子合成へとつながることが期待される。