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公开(公告)号：US20100266718A1
公开(公告)日：2010-10-21
申请号：US12810620
申请日：2008-12-22
申请人： Masato Sagawa
发明人： Masato Sagawa
CPC分类号： H01F41/0273 , B22F3/003 , B22F3/004 , B22F3/087
摘要： The present invention is aimed at providing a sintered magnet production system that can prevent the influences of a leaking magnetic field in an orienting process. A sintered magnet production system according to the present invention has a filling means 11 for filling an alloy powder into a filling/sintering container, a sintering means 13 for sintering the alloy powder, and an orienting means 12 with an air-core coil for producing a magnetic field for orienting the alloy powder in the filling/sintering container after the filling process and before the sintering process, the axis of the air-core coil being displaced from a straight line connecting the filling means 11 and the sintering means 13. The magnetic field leaking from the orienting means 12 is strongest on the extended line of the axis of the air-core coil and relatively weak in the direction perpendicular to the extended line. By displacing the axis of the air-core coil from the aforementioned straight line, the magnetic field leaking from the orienting means 12 is weakened at the positions of the filling means 11 and the sintering means 13, so that a magnet with high characteristics can be obtained.
摘要翻译： 本发明旨在提供一种能够防止在定向过程中泄漏磁场的影响的烧结磁体制造系统。 根据本发明的烧结磁体制造系统具有用于将合金粉末填充到填充/烧结容器中的填充装置11，用于烧结合金粉末的烧结装置13以及用于生产空心线圈的定向装置12 用于在填充过程之后和烧结过程之前将合金粉末定向在填充/烧结容器中的磁场，空心线圈的轴线从连接填充装置11和烧结装置13的直线位移。 从取向装置12泄漏的磁场在空心线圈的轴线的延伸线上最强，并且在垂直于延伸线的方向上相对较弱。 通过从上述直线位移空心线圈的轴线，从定位装置12泄漏的磁场在填充装置11和烧结装置13的位置被削弱，使得具有高特性的磁体可以 获得。
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公开(公告)号：US5645651A
公开(公告)日：1997-07-08
申请号：US485183
申请日：1995-06-07
申请人： Setsuo Fujimura , Yutaka Matsuura , Masato Sagawa
发明人： Setsuo Fujimura , Yutaka Matsuura , Masato Sagawa
CPC分类号： C22C1/0441 , H01F1/057 , H01F1/0577
摘要： Magnetic materials comprising Fe, B, R (rare earth elements) and Co having a major phase of Fe--Co--B--R intermetallic compound(s) of tetragonal systems and sintered anisotropic permanent magnets consisting essentially of, by atomic percent, 8-30% R (at least one of rare earth elements inclusive of Y), 2-28% B, no less than 50% Co, and the balance being Fe with impurities. Those may contain additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf) providing Fe--Co--B--R--M type materials and magnets.
摘要翻译： 包含Fe，B，R（稀土元素）和具有四方晶系的Fe-Co-BR金属间化合物的主相的Co的磁性材料和基本上由原子百分比组成的烧结各向异性永久磁体的磁性材料为8-30％ R（包括Y的稀土元素中的至少一种），2-28％B，不低于50％的Co，余量为含杂质的Fe。 这些可以含有Fe-Co-B-R-M型材料和磁铁的附加元素M（Ti，Ni，Bi，V，Nb，Ta，Cr，Mo，W，Mn，Al，Sb，Ge，Sn，Zr，Hf）。
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63.发明授权Method of obtaining a magnetic material of the rare earth/transition metals/boron type in divided form for corrosion-resistant magnets 失效用于耐腐蚀磁体的分离形式的稀土/过渡金属/硼原子的磁性材料的获得方法
公开(公告)号：US5221368A
公开(公告)日：1993-06-22
申请号：US735893
申请日：1991-07-25
CPC分类号： B22F9/023 , H01F1/0573
摘要： The invention relates to a method of obtaining friable and relatively inert TR Fe B type magnetic materials in divided form which lead to magnets having improved corrosion resistance. This method involves treating the material in an atmosphere containing (or capable of containing) hydrogen under the following conditions of absolute pressure (P) and of temperature (T.degree. C.): if P.ltoreq.Pa, 250 Pa, 250+100 log (P/Pa)
摘要翻译： 本发明涉及一种获得脆性和相对惰性的TR Fe B型磁性材料的方法，其分为多种形式，其导致具有改善的耐腐蚀性的磁体。 该方法包括在绝对压力（P）和温度（T℃）的以下条件下在含有（或能够含有）氢气的气氛中处理材料：如果P <250，则
Pa，250 + 100log（P / Pa） -
公开(公告)号：US5183516A
公开(公告)日：1993-02-02
申请号：US877400
申请日：1992-04-30
申请人： Masato Sagawa , Setsuo Fujimura , Yutaka Matsuura
发明人： Masato Sagawa , Setsuo Fujimura , Yutaka Matsuura
CPC分类号： H01F1/0577 , C22C1/0441 , H01F1/057
摘要： Magnetic materials comprising Fe, B and R (rare earth elements) having a major phase of an Fe-B-R intermetallic compound which may be a tetragonal system, wherein at least 50 at % of R consists of Nd and/or Pr, and anisotropic sintered permanent magnets consisting essentially of 8-30 at % R, 2-28 at %, B and the balance being Fe with impurities. These magnetic materials and permanent magnets may contain additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf), thus providing Fe-B-R-M type materials and magnets.
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公开(公告)号：US5110377A
公开(公告)日：1992-05-05
申请号：US523338
申请日：1990-05-14
CPC分类号： H01F1/0577 , B22F3/24 , C22C1/0441
摘要： A process for producing permanent magnet materials, which comprises the steps of:forming an alloy powder having a mean particle size of 0.3-80 microns and composed of, in atomic percentage, 8-30% R (provided that R is at least one of rare earth elements including Y), 2-28% B, and the balance being Fe and inevitable impurities,sintering the formed body at a temperature of 900.degree.-1200.degree. C.,subjecting the sintered body to a primary heat treatment at a temperature of 750.degree.-1000.degree. C.,then cooling the resultant body to a temperature of no higher than 680.degree. C. at a cooling rate of 3.degree.-2000.degree. C./min, andfurther subjecting the thus cooled body to a secondary heat treatment at a temperature of 480.degree.-700.degree. C.35 MGOe, 40 MGOe or higher energy product can be obtained with specific compositions.
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公开(公告)号：US5096512A
公开(公告)日：1992-03-17
申请号：US224411
申请日：1988-07-26
申请人： Masato Sagawa , Setsuo Fujimura , Yutaka Matsuura
发明人： Masato Sagawa , Setsuo Fujimura , Yutaka Matsuura
CPC分类号： C22C1/0441 , H01F1/057 , H01F1/0577
摘要： Magnetic materials comprising Fe, B and R (rare earth elements) having a major phase of an Fe-B-R intermetallic compound which may be a tetragonal system, wherein at least 50 at % of R consists of Nd and/or Pr, and anisotropic sintered permanent magnets consisting essentially of 8-30 at % R, 2028 at %, B and the balance being Fe with impurities. These magnetic materials and permanent magnets may contain additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf), thus providing Fe-B-R-M type materials and magnets.
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67.发明授权
公开(公告)号：US4995905A
公开(公告)日：1991-02-26
申请号：US355759
申请日：1989-05-23
申请人： Masato Sagawa
发明人： Masato Sagawa
CPC分类号： H01F1/0577
摘要： When V is added to an Nd--Fe--B sintered magnet so as to modify the minority phase such that B in excess of a stoichiometric composition of R.sub.2 Fe.sub.14 B compound-phase, essentially does not form RFe.sub.4 B.sub.4 -compound minority phases but forms a finely dispersed V--T--B compound minority phase (T is Fe, and in a case containing Co, T is Fe and Co), the coercive force (iHc) is enhanced to 15 kOe or more but becomes very sensitive to heat treatment temperature. This drawback is eliminated by the addition of from 0.01 to 1 at % of Cu.
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公开(公告)号：US4975129A
公开(公告)日：1990-12-04
申请号：US249654
申请日：1988-09-27
CPC分类号： H01F1/0577
摘要： A magnetically anisotropic sintered permanent magnet of the FeBR system in which R is sum of R.sub.1 and R.sub.2 wherein:R.sub.1 is Dy, Tb, Gd, Ho, Er, Tm and/or Yb, andR.sub.2 comprises 80 at % or more of Nd and Pr in R.sub.2 and the balance of at least one of other rare earth elements exclusive of R.sub.1,said system comprising by atomic percent, 0.05 to 5% of R.sub.1, 12.5 to 20% of R, 4 to 20% of B, and the balance being Fe with impurities. Additional elements M(Ti, Zr, Hf, Cr, Mn, Ni, Ta, Ge, Sn, Sb, Bi, Mo, Nb, Al, V, W,) may be present.
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公开(公告)号：US4597938A
公开(公告)日：1986-07-01
申请号：US532517
申请日：1983-09-15
申请人： Yutaka Matsuura , Masato Sagawa , Setsuo Fujimura
发明人： Yutaka Matsuura , Masato Sagawa , Setsuo Fujimura
CPC分类号： H01F1/0577 , Y10T29/49076
摘要： Permanent magnet materials of the Fe-B-R type are produced by:preparing a metallic powder having a mean particle size of 0.3-80 microns and a composition of 8-30 at % R, 2-28 at % B, and the balance Fe,compacting, andsintering, at a temperature of 900-1200 degrees C.Co up to 50 at % may be present. Additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf) may be present. The process is applicable for anisotropic and isotropic magnet materials.
摘要翻译： 通过以下方法制备Fe-BR型永磁材料：制备平均粒度为0.3-80微米，组成为8-30at％R，2-28at％B的金属粉末，余量为Fe， 压实和烧结，在900-1200℃的温度下，可以存在高达50原子％。 可以存在附加元素M（Ti，Ni，Bi，V，Nb，Ta，Cr，Mo，W，Mn，Al，Sb，Ge，Sn，Zr，Hf）。 该方法适用于各向异性和各向同性磁体材料。
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