| 简介 |
PROBLEM TO BE SOLVED : To provide a Sm-(Fe, Cr, Si)-N-based permanent magnetic less in α-Fe phase and having high sinter density, a rotation electrical machinery and a vehicle.
SOLUTION : The permanent magnetic is represented by RNX(CrpSiqM1-p-q)Z, where R is at least one kind of element selected from a first group consisting of Y and rare earth elements, M is at least one kind of element selected from a second group consisting of Fe and Co, 0.5≤x≤2.0, 0.005≤p≤0.2, 0.005≤q≤0.2 and 4≤z≤13, has density of 6.5 g/cm3 or more and satisfies a relationship of I(110)/{I(110)+I(303)}≤0.05, where I(303) is diffraction peak intensity from a (303) surface of a Th2Zn17 phase by a powder X ray diffraction, I(110) is diffraction peak intensity from a (110) surface of an α-Fe phase.
SELECTED DRAWING : Figure 1
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