| Autor: |
高木健太, 平山悠介, 岡田周祐, 山口渡, 尾崎公洋 |
| Předmět: |
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| Zdroj: |
Journal of the Japan Society of Powder & Powder Metallurgy / Funtai Oyobi Fummatsu Yakin; 2022 Supplement, Vol. 69, pS30-S37, 8p |
| Abstrakt: |
Post-neodymium magnets that possess high heat resistance, coercivity, and (BH)max are desired for futuregeneration motors. However, the candidate materials for post-neodymium magnets such as Sm2Fe17N3 and metastable magnetic alloys have certain process-related problems: low sinterability due to thermal decomposition at elevated temperatures, deterioration of coercivity during sintering, and the poor coercivity of the raw powder. Various developments in powder processing are underway with the aim of overcoming these problems. So far, the development of advanced powder metallurgy techniques has achieved Sm2Fe17N3 anisotropic sintered magnets without coercivity deterioration, and advances in chemical powder synthesis techniques have been successful in producing Sm2Fe17N3 fine powders with huge coercivity. The challenge of a new powder process is expected to open the way to realizing post-neodymium magnets. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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