Dust core, electromagnetic component and method for manufacturing dust core
US10898950B2 · kind B2 · utility
1Cited by
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10Claims
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Key dates
| Filing date | Jul 15, 2016 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jun 23, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F3/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A dust core includes: a plurality of soft magnetic particles composed of an iron-based material; an insulating layer including a coating layer that is composed mainly of a phosphate and covers the surface of the soft magnetic particles; and insulating pieces containing a constituent material of the insulating layer, each of the insulating pieces being surrounded by at least three mutually adjacent ones of the soft magnetic particles while separated from the insulating layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.