Influences of Pulverized Particle Size and Magnetic Field during Compacting on the Degree of Alignment of Sr-Ferrite.

Hosokawa, Seiichi; Toyota, Sachio; Yamashita, Osamu; Okimoto, Kunio

doi:10.2497/jjspm.45.77

Cited by 3 publications

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“…There have been many studies of properties of magnetic powder materials, but very few of the relationship between the magnetic performance of the final compact and compaction process. While experimental results on Nd-Fe-B powders suggest that the magnetic property of the permanent magnet made by transverse compaction is superior to that by parallel compaction, the reverse is true for the case of Sr-Ferrite powder [1], [2]. The reason has not been put forward so far.…”

Section: Introductionmentioning

confidence: 99%

3-D particulate modeling for simulation of compaction in magnetic field

2000

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The purpose of this study is to investigate the behavior of magnetic powders during compaction in an applied magnetic field, which is a common manufacturing process for producing permanent magnets. We employ a nonspherical axi-symmetric particle model and carry out simulation of compaction in a magnetic field to study the alignment of the easy axes. Compacting and lateral pressures appear to change by the application of magnetic field. The results of compacting pressures show qualitative agreement with experimental ones, and the alignment of the easy axes is significantly influenced by the application of magnetic field. It is shown that alignment of the easy axes obtained by the simulation is supported by experimental observations.

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Section: Introductionmentioning

confidence: 99%