Permanent magnet for electromagnetic device and method of making
US6596096B2 · kind B2 · utility
20Cited by
16References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Aug 14, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C28/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Permanent magnets, devices including permanent magnets and methods for manufacture are described with the permanent magnet comprising, for example: iron-boron-rare earth alloy particulate having an intrinsic coercive force of at least about 1591 kiloamperes/meter (about 20 kiloOersteds) and a residual magnetization of at least about 0.8 tesla (about 8 kiloGauss), wherein the rare earth content comprises praseodymium, a light rare earth element selected from the group consisting of cerium, lanthanum, yttrium and mixtures thereof, and balance neodymium; and a binder bonding the particulate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.