| 简介 |
PROBLEM TO BE SOLVED : To provide a manufacturing method for a rare-earth bonded magnet that obtains a bonded magnet, having sufficient mechanical strength, without causing deterioration in productivity.
SOLUTION : Flake-shaped rare-earth magnetic powder is used as primary particles. The primary particles and a thermosetting resin are mixed and compression-molded in a die, and then, pulverized after subjecting it to hardening treatment so as to obtain secondary particles. The secondary particles are mixed with a thermoplastic resin so as to injection-mold it. The primary particles constituting the secondary particles are configured such that a plurality of the primary particles are laminated while each flake-shaped plane of the primary particles is joined to each other. The ratio (L/D) between the major axis (L) and the thickness (D) of each secondary particle is ≤3.
COPYRIGHT : (C)2010, JPO&INPIT |
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