Rare earth permanent magnet and rare earth permanent magnet manufacturing method
US10629343B2 · kind B2 · utility
0Cited by
2References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2016 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Jul 3, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2999/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A magnetic property of a rare earth permanent magnet containing neodymium, iron, and boron is enhanced. The present disclosure is a rare earth permanent magnet with a compound represented by a following expression as a main phase: Nd2Fe14B(1-x)Mx. In the expression, M represents an element selected from any one of cobalt, beryllium, lithium, aluminum, and silicon and x satisfies 0.01≤x≤0.25. The main phase has an Nd—Fe—B layer and an Fe layer periodically and part of boron is substituted with any one or more types of elements selected from a group consisting of cobalt, beryllium, lithium, aluminum, and silicon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.