Bonded La(Fe,Si)13-based magnetocaloric material and preparation and use thereof
US10096411B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 17, 2012 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2321/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a high-strength, bonded La(Fe, Si)13-based magnetocaloric material, as well as a preparation method and use thereof. The magnetocaloric material comprises magnetocaloric alloy particles and an adhesive agent, wherein the particle size of the magnetocaloric alloy particles is less than or equal to 800 μm and are bonded into a massive material by the adhesive agent; the magnetocaloric alloy particle has a NaZn13-type structure and is represented by a chemical formula of La1-xRx(Fe1-p-qCopMnq)13-ySiyAα, wherein R is one or more selected from elements cerium (Ce), praseodymium (Pr) and neodymium (Nd), A is one or more selected from elements C, H and B, x is in the range of 0≤x≤0.5, y is in the range of 0.8≤y≤2, p is in the range of 0≤p≤0.2, q is in the range of 0≤q≤0.2, α is in the range of 0≤α≤3.0. Using a bonding and thermosetting method, and by means of adjusting the forming pressure, thermosetting temperature, and thermosetting atmosphere, etc., a high-strength, bonded La(Fe, Si)13-based magnetocaloric material can be obtained, which overcomes the frangibility, the intrinsic property, of the magnetocaloric material. At the same time, the magnetic entropy change remains …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.