Influence of Nanocrystal Powdering of Soft Magnetic Alloy Ribbons on Magnetic Properties

MAEDE Masato, FUJIMOTO Taishi, IMAMURA Hiroyuki, EBIHARA Hiroshi

doi:10.7791/jspmee.10.316

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Other Title

軟磁性合金薄帯のナノ結晶粉体化が磁気特性に及ぼす影響
ナンジセイゴウキンウスオビノナノケッショウフンタイカガジキトクセイニオヨボスエイキョウ

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Description

In recent years, the electrification of vehicles has progressed rapidly, and in order to further improve fuel efficiency, it is required to reduce the size and weight of the system. In dust core using the powder of soft magnetic alloy, in order to reduce the size and weight, it is required that the material has low core loss and high saturation magnetic flux density. Therefore, we developed nanocrystallline powders by pulverizing soft magnetic alloy ribbons with low loss and high saturation magnetic flux density. We clarified the influence of the pulverization method by machine crushing and the nanocrystalization method by heating of pulverized powders on the magnetic properties. As a result, distortion during pulverizing was suppressed by the cyclone mill method. Furthermore, nanocrystallization by the heat press method enables uniform heating without thermal runaway, so that the target values of coercivity and saturation magnetic flux density, which are important magnetic properties, was achieved.

Journal

Journal of Smart Processing

Journal of Smart Processing 10 (5), 316-322, 2021-09-10

Smart Processing Society for Materials, Environment & Energy (High Temperature Society of Japan)

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