Process for producing Fe-Co based magnetic alloy having excellent mechanical properties
US6190463A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1998 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Dec 1, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D6/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for prooducing an Fe--Co based magnetic alloy having not only good magnetic properties but also excellent mechanical characteristics is provided which includes a first step of heating an Fe--Co based magnetic alloy material having a Co content which is in a range of 30% by weight.ltoreq.Co.ltoreq.65% by weight to convert the metallographic structure thereof into a .gamma. single-phase structure, a second step of gradually cooling the material to an a single-phase range at a cooling rate C.sub.1 set in a range of 20 K.degree./hr.ltoreq.C.sub.1.ltoreq.0.5 K.degree./sec, and a third step of subjecting the material to a magnetic softening treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.