Powder for dust core and method for producing the same
US8337638B2 · kind B2 · utility
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Key dates
| Filing date | Apr 17, 2009 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Oct 2, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2202/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A powder for a dust core comprising a silicon-containing layer formed within a depth of less than 0.15 D from the surface of the surface layer of a soft magnetic metal powder having a particle diameter D and a method for producing the same are provided. The method for producing a powder for a dust core 10 comprising a silicon-containing layer 2 comprises performing silicon impregnation of the surface of a soft magnetic metal powder (particle) 1 containing a carbon element, wherein:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.