In one embodiment, a permanent magnet has a composition expressed by a composition formula: RN x (Cr p Si q M 1-p-q ) z (R is at least one element selected from Y and rare-earth elements, M is at least one element selected from Fe and Co, and x, p, q, and z are atomic ratios satisfying 0.5¤x ¤ 2.0, 0.005 ¤p ¤ 0.2, 0.005 ¤q ¤0.2, and 4 ¤ z ¤ 13, respectively). The permanent magnet has a density of 6.5 g/cm 3 or more and satisfies the relationship of I(110)/{I(110) +I(303)} ¤ 0.05, in which I(303) represents a diffraction peak intensity from a (303) plane of a Th 2 Zn 17 phase obtained through powder X-ray diffraction of the permanent magnet, and I(110) represents a diffraction peak intensity from a (110) plane of an ±-Fe phase obtained through the powder X-ray diffraction.
PERMANENT MAGNET, ROTARY ELECTRICAL MACHINE, AND VEHICLE
DAUERMAGNET, ROTIERENDE ELEKTRISCHE MASCHINE UND FAHRZEUG
AIMANT PERMANENT, MACHINE ÉLECTRIQUE TOURNANTE ET VÉHICULE
2017-09-20
Patent
Elektronische Ressource
Englisch
PERMANENT MAGNET, ROTARY ELECTRICAL MACHINE, AND VEHICLE
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