Multielement interstitial hard magnetic material and process for producing magnetic powder and magnet using the same
US6419759B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 14, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jun 14, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a multielement rare earth-iron interstitial permanent magnetic material having the formula of (R1−&agr;R″&agr;)x(Mo1−&bgr;M&bgr;)y Fe100−x−y−zlz, wherein, R is a light rare earth element; R′ is a heavy rare earth element; &agr; is from 0.01 to 0.14; x is an atomic percent from 4 to 15; M is an element of IIIA, IVA, IVB, VB, VIB and VIIB families in the periodic table; &bgr; is from 0.01 to 0.98; y is an atomic percent from 3 to 20; l is an element occupying the interstitial site of the crystal selected from the first and the second periodic groups. There is also provided a process for producing high performance anisotropic magnetic powder and magnet by using the above-mentioned material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.