等方性Nd-Fe-Bプラスチック磁石

概要

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High performance isotropic bonded Nd-Fe-B magnets made from rapid-quenched powder have been developed.These magnets have special features as follows.(1) The (BH) max obtained are 4∼6MGOe for injection moulded magnet and 7∼10MGOe for compression moulded magnet. These properties are highest in isotropic magnets.(2) Magnetization of these magnets at any direction is possible because of isotropic properties.(3) Complex shape magnets can be manufactured.(4) The relative abundance of Nd brings lower cost compared with magnets containing Sm.(5) Flux loss at elevated temperature is lower than that of sintered Nd-Fe-B magnet and the same as bonded Sm-Co magnet.(6) As for corrosion resistance, there is no problem when magnets are coated with epoxy resin.Application of these magnets are expected for brushless motors, stepping motors, relay, sensor and so on.
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