Iron powder for dust cores
US8916268B2 · kind B2 · utility
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Key dates
| Filing date | Dec 11, 2008 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | May 4, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An iron powder for dust cores is provided which can be formed into a dust core having a high resistivity and having a low iron loss without degrading the mechanical strength. The iron powder for dust cores includes an iron powder and an oxide film on the surface thereof, wherein the oxide film is composed of a Si-based oxide in which the ratio of Si to Fe satisfies Si/Fe≧0.8 on an atomic number basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.