Powder for permanent magnet, method for its production and anisotropic permanent magnet made using said powder
US6328817A · kind A · utility
8Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Apr 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0306
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a powder for permanent magnet comprising needle-like fine particles of Fe or Fe--Co alloy as a base material, a hard magnetic layer and a separation layer of an oxide of rare earth element provided outside said hard magnetic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.