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

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3349

Lastpage

3352

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908796

Filename

908796