Iron-based nanoparticles and grains
US11161175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2017 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Oct 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0552
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Example nanoparticles may include an iron-based core, and a shell. The shell may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example alloy compositions may include an iron-based grain, and a grain boundary. The grain boundary may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example techniques for forming iron-based core-shell nanoparticles may include depositing a shell on an iron-based core. The depositing may include immersing the iron-based core in a salt composition for a predetermined period of time. The depositing may include milling the iron-based core with a salt composition for a predetermined period of time. Example techniques for treating a composition comprising core-shell nanoparticles may include nitriding the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.