Iron powder and method for the preparation thereof
US6562458B2 · kind B2 · utility
6Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2001 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | May 25, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention concerns a process for the preparation of an insulated soft magnetic powder comprising the steps of mixing particles of a soft magnetic iron base powder with an acidic, aqueous insulating-layer forming solution, in which MgO has been dissolved; and drying the obtained mixture to obtain an electrically insulating Mg containing layer on the particle surfaces. The invention also concerns the powder per se as well as compressed soft magnetic powder cores prepared from the powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.