公开(公告)号：WO2021168438A1

公开(公告)日：2021-08-26

申请号：PCT/US2021/019100

申请日：2021-02-22

申请人： NIRON MAGNETICS, INC.

发明人： JOHNSON, Francis ,  GREGER, Richard W. ,  LARSON, John M. ,  WU, Yiming ,  ZHANG, Fan ,  DAMIEN, Kathryn Sara

IPC分类号： H01F1/047 ,  H01F41/02 ,  H01F1/06 ,  H01F1/065 ,  H01F41/0273

摘要： Disclosed herein is a permanent magnet comprising: a plurality of aligned iron nitride nanoparticles wherein the iron nitride nanoparticles include α"-Fe16N2 phase domains; wherein a ratio of integrated intensities of an α"-Fe16N2 (004) x-ray diffraction peak to an α"- α"-Fe16N2 (202) x-ray diffraction peak for the aligned iron nitride nanoparticles is greater than at least 7%, wherein the diffraction vector is parallel to alignment direction, and wherein the iron nitride nanoparticles exhibit a squareness measured parallel to the alignment direction that is greater than a squareness measured perpendicular to the alignment direction.

公开(公告)号：WO2020237192A1

公开(公告)日：2020-11-26

申请号：PCT/US2020/034331

申请日：2020-05-22

申请人： NIRON MAGNETICS, INC.

发明人： JOHNSON, Francis ,  WU, Yiming ,  LARSON, John M. ,  BLACKBURN, L. Anderson

IPC分类号： C21D1/26 ,  C21D6/00 ,  C23C8/26

摘要： Iron nitride nanoparticles and magnet materials made from iron nitride nanoparticles are described. The iron nitride nanoparticles have a core and a shell morphology. The shell is configured to provide a means to nitride the core. The magnetic materials are characterized as having an Msat greater than about 160 emu/g and a coercivity greater than about 700 Oe.