Rare-earth element/cobalt type magnet powder for resin magnets
US4865660A · kind A · utility
4Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Jul 13, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0553
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Magnetic powder of the samarium/praseodymium/cobalt type and of the samarium/praseodymium/neodymium/cobalt type having specific compositions is substantially composed of (1-5) single phase, has improved residual magnetic flux density and a high maximum energy product, and is hence suitable for resin magnets. In addition, production cost is lower compared with conventional rare-earth metal/cobalt type magnet powder because part of samarium metal has been replaced by praseodymium and neodymium which are more abundant and less expensive materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.