Title :
Powder alignment system for anisotropic bonded NdFeB Halbach cylinders
Author :
Zhu, Z.Q. ; Xia, Z.P. ; Atallah, K. ; Jewell, G.W. ; Howe, D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
fDate :
9/1/2000 12:00:00 AM
Abstract :
A Halbach cylinder, fabricated from pre-magnetized sintered NdFeB magnet segments, is proposed for the powder aligning system during the compression or injection moulding of anisotropic bonded Halbach oriented NdFeB ring magnets. The influence of leading design parameters of the powder aligning system, viz. the number of magnet segments per pole, their axial length and radial thickness, and their clearance from the mould, is investigated by finite element analysis, and validated experimentally
Keywords :
boron alloys; finite element analysis; iron alloys; magnetic anisotropy; magnetic particles; magnetisation; moulding; neodymium alloys; permanent magnets; powder metallurgy; sintering; NdFeB; anisotropic bonded Halbach cylinders; axial length; compression moulding; finite element analysis; injection moulding; leading design parameters; mould clearance; powder alignment system; premagnetized sintered magnet segments; radial thickness; ring magnets; Anisotropic magnetoresistance; Bonding; Engine cylinders; Injection molding; Magnetic analysis; Magnetic anisotropy; Magnetic flux; Permanent magnets; Perpendicular magnetic anisotropy; Powders;
Journal_Title :
Magnetics, IEEE Transactions on
