Reducing magnetic hysteresis losses in cores of thin tapes of soft magnetic amorphous metal alloys
US4314594A · kind A · utility
22Cited by
9References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1980 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | Apr 29, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1259
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A technique for processing thin tapes of soft magnetic amorphous metal alloys to reduce their magnetic hysteresis losses. The technique involves preliminarily forming such a tape into a core, heating the core, and then controllably cooling the core, the heating and cooling being conducted in an oxidizing atmosphere. Maintaining the core during processing in a suitable longitudinal or transverse (relative to the tape) magnetic field can also produce improved properties. Certain tape cores so processed have particular magnetic hysteresis loss characteristics never heretofore known.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.