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US 2020/0090844 A1Published application
Permanent magnet, rotary electric machine, and vehicle
AssigneeKabushiki Kaisha Toshiba
InventorsMasaya Hagiwara, Shinya Sakurada, Keiko Okamoto
Life of this patent
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Abstract
A permanent magnet comprises crystal grains each including a main phase. An average size of the crystal grains is 1.0 μm or less, and a degree of orientation of easy magnetization axes of the crystal grains to an easy magnetization axis of the magnet is 15% or more and 90% or less. A recoil magnetic permeability is 1.13 or more, a residual magnetization is 0.8 T or more and less than 1.16 T, and an intrinsic coercive force is 850 kA/m or more.
Claims11
A permanent magnet comprising crystal grains including a main phase, wherein
- an average size of the crystal grains is 1.0 μm or less,
- a degree of orientation of easy magnetization axes of the crystal grains to an easy magnetization axis of the magnet is 15% or more and 90% or less, and
- a recoil magnetic permeability is 1.13 or more, a residual magnetization is 0.8 T or more and less than 1.16 T, and an intrinsic coercive force is 850 kA/m or more.
Dependencies are inferred from the claim text.