PROBLEM TO BE SOLVED: To provide an axial gap motor excellent in heat-dissipation properties, and a stator core and a stator suitable for components of the motor. ;SOLUTION: The stator core 10 is provided with an annular yoke part 11, and a plurality of columnar teeth 12 protruding on one face of the yoke part 11. A stator is configured by arranging a coil C, with coils wound thereon, on the outer periphery of each tooth 12. A refrigerant groove 14 is provided on the protruding side face of each tooth 12 in the yoke part 11. The refrigerant grooves 14 increase contact areas between the core 10 and a refrigerant, thereby effectively cooling the core 10. Consequently, the core 10 is excellent in heat-dissipation properties. COPYRIGHT: (C)2009,JPO&INPIT

The present invention relates to a composite component including a metal component having a substantially cylindrical shape or a substantially annular shape, and a ring-shaped bonded magnet disposed on the outer periphery of the metal component, the ring-shaped bonded magnet containing a thermoplastic resin, magnetic particles, and rubber particles.

A hybrid rotor assembly is provided. The assembly utilizes two different types of magnets within the lamination cavities of the lamination stack: sintered permanent magnets and bonded magnets.

Provided is a compound powder suitable for producing a molded body having a high density. A compound powder 10 includes metal element-containing particles 1 and a resin composition 2 covering the metal element-containing particle 1, in which a melt viscosity of the resin composition 2 at 100 C. is 0.01 Pa.Math.s or more and 10 Pa.Math.s or less.

Provided is a compound powder suitable for producing a molded body having a high density. A compound powder 10 includes metal element-containing particles 1 and a resin composition 2 covering the metal element-containing particle 1, in which a melt viscosity of the resin composition 2 at 100 C. is 0.01 Pa.Math.s or more and 10 Pa.Math.s or less.

This invention provides for a rotary electric machine that includes a rotor having a plurality of permanent magnets arranged in the circumferential direction, and in which the leakage of magnetic flux can be suppressed with a simple structure; and a rare-earth permanent magnet-forming sintered compact for forming rare-earth permanent magnets to be used in said rotary electric machine.

Provided is a method for producing a sintered body that forms a rare-earth permanent magnet, has a single sintered structure and an arbitrary shape, and has easy magnetization axis orientations of different directions applied to the magnet material particles in a plurality of arbitrary regions. This method forms a three-dimensional first molded article from a composite material formed by mixing a resin material and magnet material particles containing a rare-earth substance. The first molded article is then subjected to a deforming force and a second molded article is formed in which the orientation direction of the easy magnetization axis of the magnet material particles in at least the one section of the horizontal cross-section is changed to a direction which differs from the orientation direction of the first molded article. The second molded article is heated to a sintering temperature and kept at the temperature for a period of time.

A process for producing an ordered martensitic iron nitride powder that is suitable for use as a permanent magnetic material is provided. The process includes fabricating an iron alloy powder having a desired composition and uniformity; nitriding the iron alloy powder by contacting the material with a nitrogen source in a fluidized bed reactor to produce a nitride iron powder; transforming the nitride iron powder to a disordered martensitic phase; annealing the disordered martensitic phase to an ordered martensitic phase; and separating the ordered martensitic phase from the iron nitride powder to yield an ordered martensitic iron nitride powder.

A process for producing an ordered martensitic iron nitride powder that is suitable for use as a permanent magnetic material is provided. The process includes fabricating an iron alloy powder having a desired composition and uniformity; nitriding the iron alloy powder by contacting the material with a nitrogen source in a fluidized bed reactor to produce a nitride iron powder; transforming the nitride iron powder to a disordered martensitic phase; annealing the disordered martensitic phase to an ordered martensitic phase; and separating the ordered martensitic phase from the iron nitride powder to yield an ordered martensitic iron nitride powder.

A method for producing rare-earth magnets is provided in which, when a slurry 2 having a rare-earth-compound powder dispersed therein is applied to sintered magnet bodies 1 and dried to apply the powder thereto, the magnet bodies 1 are accommodated and conveyed in holding pockets 42 of a conveyance drum 4 which rotates in a state of being partially immersed in the slurry 2, and, as a result, the magnet bodies 1 are immersed in the slurry 2, withdrawn from the slurry 2, and dried to apply the powder to the sintered magnet bodies 1. According to this production method, the powder can be uniformly and efficiently applied, wastage of the rare-earth compound can be effectively suppressed, and a reduction in the surface area of equipment for performing an application step can also be achieved.