Soft magnetic powder and magnetic shield composition
US5207841A · kind A · utility
34Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Apr 5, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/34
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Soft magnetic powder comprising flat soft magnetic particles of an alloy having a composition defined and encompassed by polygon ABCDE in a Fe-Si-Cr ternary composition diagram of FIG. 1 or polygon JKLMN in a Fe-Si-Al ternary composition diagram of FIG. 4 is suitable for use in magnetic shields. The flat soft magnetic particles are prepared by furnishing alloy particles having a predetermined composition, flattening them, and heat treating the flat particles to develop a peak corresponding to plane index (002) in an X-ray diffraction diagram thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.