| 摘要 |
<P>PROBLEM TO BE SOLVED: To satisfy the need for an annular or an arcuate thin anisotropic rare earth bond magnet having an intense magnetostatic field in a gap thereof and a mechanical strength resistant to high speed rotation for achieving high output and high efficiency in a permanent magnet type motor. <P>SOLUTION: Compound granule [A] containing Sm<SB>2</SB>Fe<SB>17</SB>N<SB>3</SB>impalpable powder [A1b] coated with oligomer or prepolymer [A2], Nd<SB>2</SB>Fe<SB>14</SB>B powder [A1a], and ductile macromolecules [B1] is subjected to compression molding through a nonwoven fabric impregnated with [A2] in a magnetic field together with the ductile macromolecules [B1] and chemical contact [C1] under melted and fluidized condition accompanied by slip, and is self-organized along with a fiber reinforced layer [E] by forming a chemical contact point [C]. Thus, a magnet provided with the fiber reinforced layer of 1 mm thick and 139 kJ/m<SP>3</SP>as (BH)<SB>max</SB>is obtained nearly without voids, and it can be drawn into e.g. an annular shape whose diameter is ≥24 mm to form a high output and high efficiency permanent magnet type motor with robust construction. The fiber reinforced layer [E] is disposed as the outermost layer of the magnet. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
