Magnetic body and method for manufacturing same, as well as coil component using magnetic body and circuit board carrying same
US11901103B2 · kind B2 · utility
1Cited by
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5Claims
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Key dates
| Filing date | Feb 24, 2020 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | May 28, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F41/0246
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic body is constituted by grains of a soft magnetic alloy bonded together via an oxide layer, wherein: the soft magnetic alloy is an alloy containing Si by 1 to 5.5 percent by mass, and Cr or Al by 0.2 to 4 percent by mass in total, as constituent elements, with Fe and unavoidable impurities accounting for the remainder; and the oxide layer contains Si, as well as at least one of Cr and Al, where, among Fe, Si, Cr, and Al, Si is contained in the largest quantity based on mass. The magnetic body can have high magnetic permeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.