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公开(公告)号：US20170178778A1
公开(公告)日：2017-06-22
申请号：US15268725
申请日：2016-09-19
发明人： Huayun Mao , Baogui Cai , Lujun Liu , Jinhong Zhang
CPC分类号： H01F1/442 , H01F1/0577 , H01F1/42 , H01F7/02 , H01F41/0293
摘要： The present invention, on the one hand, provides a neodymium iron boron magnet, comprising neodymium iron boron magnet blank and the RTMH alloy layer compounded on the surface; the R is one or more selected from rare earth elements; the T is Fe and/or Co; the M is one or more selected from the group consisting of Al, Si, Ti, V, Cr, Mn, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ag, In, Sn, Sb, Hf, Ta, W, Pt, Au, Pb and Bi; the H is hydrogen element. By the present invention, the coercive force of magnets is significantly enhanced, and at the same time, the original magnetic remanence and maximum magnetic energy product of the magnets are not significantly reduced.
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2.发明授权公开(公告)号：US12062472B2
公开(公告)日：2024-08-13
申请号：US17434685
申请日：2020-08-24
发明人： Minghuo Liao , Baogui Cai , Yong Liu , Haiming Wu
CPC分类号： H01F1/0571 , H01F41/0293
摘要： The present disclosure provides neodymium-iron-boron magnetic body having gradient distribution, comprising an ease-to-demagnetize zone and a hard-to-demagnetize zone, wherein in a direction perpendicular to magnetization direction, remanence of the ease-to-demagnetize zone is less than remanence of the hard-to-demagnetize zone, and coercivity of the ease-to-demagnetize zone is greater than coercivity of the hard-to-demagnetize zone; and along the direction perpendicular to magnetization direction, the remanence and the coercivity of the ease-to-demagnetize zone are respectively a constant value, and the remanence and the coercivity of the hard-to-demagnetize zone are respectively a constant value. Due to the gradient distribution of remanence and coercivity of the neodymium-iron-boron magnetic body provided by the present application, the remanence, coercivity, magnetic flux and surface magnetic field of the neodymium-iron-boron magnetic body are optimized.
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3.发明申请公开(公告)号：US20220328219A1
公开(公告)日：2022-10-13
申请号：US17434685
申请日：2020-08-24
发明人： Minghuo Liao , Baogui Cai , Yong Liu , Haiming Wu
摘要： The present disclosure provides neodymium-iron-boron magnetic body having gradient distribution, comprising an ease-to-demagnetize zone and a hard-to-demagnetize zone, wherein in a direction perpendicular to magnetization direction, remanence of the ease-to-demagnetize zone is less than remanence of the hard-to-demagnetize zone, and coercivity of the ease-to-demagnetize zone is greater than coercivity of the hard-to-demagnetize zone; and along the direction perpendicular to magnetization direction, the remanence and the coercivity of the ease-to-demagnetize zone are respectively a constant value, and the remanence and the coercivity of the hard-to-demagnetize zone are respectively a constant value. Due to the gradient distribution of remanence and coercivity of the neodymium-iron-boron magnetic body provided by the present application, the remanence, coercivity, magnetic flux and surface magnetic field of the neodymium-iron-boron magnetic body are optimized.
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公开(公告)号：US09947447B2
公开(公告)日：2018-04-17
申请号：US15268725
申请日：2016-09-19
发明人： Huayun Mao , Baogui Cai , Lujun Liu , Jinhong Zhang
CPC分类号： H01F1/442 , H01F1/0577 , H01F1/42 , H01F7/02 , H01F41/0293
摘要： The present invention, on the one hand, provides a neodymium iron boron magnet, comprising neodymium iron boron magnet blank and the RTMH alloy layer compounded on the surface; the R is one or more selected from rare earth elements; the T is Fe and/or Co; the M is one or more selected from the group consisting of Al, Si, Ti, V, Cr, Mn, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ag, In, Sn, Sb, Hf, Ta, W, Pt, Au, Pb and Bi; the H is hydrogen element. By the present invention, the coercive force of magnets is significantly enhanced, and at the same time, the original magnetic remanence and maximum magnetic energy product of the magnets are not significantly reduced.
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