Near net shape bulk laminated silicon iron electric steel for improved electrical resistance and low high frequency loss
US11170919B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Mar 27, 2019 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jun 17, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/14766
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention involves producing discontinuous, flake-shaped particles of a soft magnetic material, coating the flake-shaped particles with an electrically insulating coating, and consolidating the coated flaked-shaped particles to form a soft magnetic bulk shape. The consolidated bulk shape can comprise a layer or a simple or complex 3D magnet part shape, which has a consolidated layered microstructure that includes laminated soft magnetic regions that are substantially encapsulated by an electrical insulating layer to increase the resistivity of soft magnetic material, especially when used in silicon iron magnet parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.