Nanostructured Mn-Al permanent magnets and methods of producing same
US8999233B2 · kind B2 · utility
5Cited by
8References
6Claims
0Family size
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Key dates
| Filing date | Dec 16, 2011 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Jul 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Nanostructured Mn—Al, Mn—Al—C permanent magnets are disclosed. The magnets have high coercivities (about 4.8 kOe and 5.2 kOe) and high magnetization values. An intennetallic composition includes a ternary transition metal modified manganese aluminum alloy Mn—Al—Fe, Mn—Al—Ni, or Mn—Al—Co having at least about 80% of a magnetic τ phase and permanent magnetic properties. The alloy may have a saturation magnetization value of at least 96 emu/g with approximately 5% ternary transition metal replacing Al. The alloy may also have a saturation magnetization value of at least 105 emu/g with 10% ternary transition metal replacing Al.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.