发明授权
US09067284B2 Magnet recycling to create Nd—Fe—B magnets with improved or restored magnetic performance
有权
磁铁回收利用改善或恢复磁性能的Nd-Fe-B磁体
- 专利标题： Magnet recycling to create Nd—Fe—B magnets with improved or restored magnetic performance
- 专利标题（中）： 磁铁回收利用改善或恢复磁性能的Nd-Fe-B磁体
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申请号： US14448823申请日： 2014-07-31
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公开(公告)号： US09067284B2公开(公告)日： 2015-06-30
- 发明人: Miha Zakotnik , Peter Afiuny , Scott Dunn , Catalina Oana Tudor
- 申请人： Miha Zakotnik , Peter Afiuny , Scott Dunn , Catalina Oana Tudor
- 申请人地址： US MD Perryville
- 专利权人： Urban Mining Technology Company, LLC
- 当前专利权人： Urban Mining Technology Company, LLC
- 当前专利权人地址： US MD Perryville
- 代理机构： Fish & Richardson P.C.
- 主分类号： H01F1/057
- IPC分类号： H01F1/057 ; B23P19/04 ; H01F1/08 ; H01F41/02 ; H01F41/00 ; B01J10/00 ; B22F1/00 ; B22F9/04
摘要：
Recycled Nd—Fe—B sintered magnets. One of the recycled Nd—Fe—B sintered magnets includes a composition of WaRbAc, where waste material W comprises material from a waste Nd—Fe—B sintered magnet, rare earth material R comprises at least one of: Nd or Pr, and elemental additives A comprises at least one of: Nd, Pr, Dy, Co, Cu, or Fe, and indices a, b, and c indicate atomic percentages of the corresponding compositions or elements and the atomic percentages of the rare earth material R and the elemental additives A have values satisfying Nd[0.1-19 at. %*s(Nd), x]Pr[0.1-19 at. %*s(Pr), y]Dy[0.1-19 at. %*s(Dy), z]Co[0 at. %, d]Cu[0 at. %, e]Fe[0 at. %, f] where [m,n] means a range from minimum m and maximum n, s(t) is the atomic percent of element t in starting composition, x=18 at. %-[81,99.9] at. %*(s(Nd)+s(Pr)+s(Dy)), y=18 at. %-[81,99.9] at. %*(s(Nd)+s(Pr)+s(Dy)), z=18 at. %-[81,99.9] at. %*(s(Nd)+s(Pr)+s(Dy)), d=3 at. %-[81,99.9] at. %*s(Co), e=0.3 at. %-[81,99.9] at. %*s(Cu), and f=77 at. %-[81,99.9] at. %*(s(Fe)+s(Co)).