Magnetocaloric alloys useful for magnetic refrigeration applications
US11728074B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 20, 2019 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Apr 17, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to magnetocaloric materials comprising alloys useful for magnetic refrigeration applications. In some embodiments, the disclosed alloys may be Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are limited thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. Surprisingly, the performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.