A magnetically anisotropic powder behavior under compaction in magnetic field(1)

摘要

A magnetically anisotropic powder behavior under compaction in magnetic field was studied in order to make a bonded magnet with high maximum energy product composed of magnetically anisotropic Nd-Fe-B powder and an epoxy resin binder. In thiswork, the influence of the strength and duration of magnetic field on the degree of magnetic orientation was investigated. The results show that the degree of magnetic orientation is dependent on the bulk density of magnetically anisotropic Nd-Fe-B powder in the mold during compaction in magnetic field. Magnetic field at low bulk density is necessary for high degree of magnetic orientation.