Fe based hard magnetic alloy having super-cooled liquid region
US6280536A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 25, 1998 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Mar 25, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0571
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a Fe based hard magnetic alloy having a very wide temperature interval in the super-cooled liquid region, having a hard magnetism at room temperature, being able to be produced thicker than amorphous alloy thin films obtained by conventional liquid quenching methods, and having a high material strength, wherein the Fe based hard magnetic alloy comprises Fe as a major component and containing one or a plurality of elements R selected from rare earth elements, one or a plurality of elements M selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and Cu, and B, the temperature interval .DELTA. T.sub.x in the super-cooled liquid region represented by the formula of .DELTA. T.sub.x =T.sub.x -T.sub.g (wherein T.sub.x and T.sub.g denote a crystallization initiation temperature and glass transition temperature, respectively) being 20.degree. C. or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.