Sm-Fe-V magnet alloy and method of making same
US4969961A · kind A · utility
2Cited by
1References
2Claims
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Key dates
| Filing date | Mar 3, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Mar 3, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetically hard compound having the approximate formula SmFe.sub.10 V.sub.2 formed by rapidly quenching a molten mixture of the precursors either with or without subsequent annealing exhibits an intrinsic room temperature coercivity of at least 5 kOe. A mixture of samarium, iron and vanadium is melted and then rapidly quenched by metal spinning to form a fine grained structure with magnetic anisotropy as quenched. Alternatively, the molten material is over-quenched and then annealed to optimize the magnetic properties of the alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.