Plurality of flaky magnetic metal particles, pressed powder material, and rotating electric machine
US10774404B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2017 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jun 24, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a plurality of flaky magnetic metal particles of the embodiments, each flaky magnetic metal particle having a flat surface provided with either or both of a plurality of concavities and a plurality of convexities arranged in a first direction, each concavity or convexity having a width of 0.1 μm or more, a length of 1 μm or more, and an aspect ratio of 2 or higher; and at least one first element selected from the group consisting of iron (Fe), cobalt (Co), and nickel (Ni), the flaky magnetic metal particles having an average thickness of between 10 nm and 100 μm inclusive and an average aspect ratio of between 5 and 10,000 inclusive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.