Preparation of MnBi LTP magnet by direct sintering
US10706997B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2017 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | May 7, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2202/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method comprising sintering a Mn and Bi powder compact at a first temperature for a first predetermined duration, based on the first temperature, and sintering the compact at a second temperature, less than the first temperature, for a second predetermined duration, greater than the first duration, is disclosed. The sintering at a first temperature for a first predetermined duration generates a predetermined MnBi LTP transition driving force to decrease a formation energy barrier for transition to MnBi LTP. Sintering the compact at the second temperature for the second predetermined duration forms a magnet containing the MnBi LTP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.