R-T-B based sintered magnet
US10096410B2 · kind B2 · utility
1Cited by
7References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 3, 2014 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Aug 4, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/278
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An R-T-B based sintered magnet having R2T14B crystal grains and a grain boundary formed by two or more adjacent R2T14B crystal grains. An R—Co—Cu—N concentrated part whose concentrations of R, Co, Cu and N are respectively higher than those in the R2T14B crystal grains may be in the grain boundary. An R—O—C concentrated part or an R—O—C—N concentrated part may be further provided in the grain boundary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.