Cu additions to Nd-Fe-B alloys to reduce oxygen content in the ingot and rapidly solidified ribbon
US6277211A · kind A · utility
3Cited by
10References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1999 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Sep 30, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is disclosed for producing rare earth-iron-boron alloys and magnets with reduced oxygen content and improved yield. Such a reduction in oxygen content and improvement in yield are achieved by including copper in a melt having a composition comprising a rare earth, boron, and iron, and subsequently solidifying the melt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.