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公开(公告)号：US4975213A
公开(公告)日：1990-12-04
申请号：US294124
申请日：1989-01-06
CPC分类号： H01F1/0578 , C22C1/0441
摘要： In a method for producing a resin-bonded rare earth-iron-boron magnet, a powder is subjected to a heat-treatment below its melting point. The powder can be either: (1) a mixture of both: (a) a powder of a rare earth-iron-boron magnetic alloy comprising about 8 to about 30 atomic percent of R, which stands for at least one selected from the group of Y (yttrium) and rare earth elements, about 2 to about 28 atomic precent of B(boron), and at least 50 atomic percent of Fe(iron) and (b) at least one of the group consisting of R, R-oxides, which are oxides of R, and R-compound, which are the compounds consisting essentially of more than 30 atomic percent of R and the balance substantially of at least one of Fe and Co; or (2) a rare earth-iron-boron magnetic alloy comprising about 8 to about 30 atomic percent of R, about 2 to about 28 atomic percent of B, about 0.1 to about 13 atomic percent of Ga, and at least 50 atomic percent of Fe. The resultant heat-treatment powder is then bonded with a resin. The present invention also includes a magnet such as might be made by such a method.
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公开(公告)号：US4935075A
公开(公告)日：1990-06-19
申请号：US311389
申请日：1989-02-16
IPC分类号： H01F1/057
CPC分类号： H01F1/0577 , H01F1/057 , H01F1/0578
摘要： A permanent magnet essentially consists of 10 to 40% by weight of R, 0.1 to 8% by weight of boron, 13% by weight or less of gallium and iron, where R is at least one component selected from the group consisting of yttrium and the rare-earth elements.The magnet having this composition has a high coercive force iHC and a high residual magnetic flux density and therefore has a high maximum energy product.
摘要翻译： 永磁体基本上由10〜40重量％的R，0.1〜8重量％的硼，13重量％以下的镓和铁组成，其中R为选自钇和 稀土元素。 具有这种组成的磁体具有高的矫顽力iHC和高剩余磁通密度，因此具有高的最大能量积。
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公开(公告)号：US5071493A
公开(公告)日：1991-12-10
申请号：US470748
申请日：1990-01-26
CPC分类号： H01F1/0577
摘要： There is disclosed a permanent magnet comprising a sintered alloy composed of rare earth elements (R), boron and iron. This permanent magnet is substantially constituted by 2-phase systems, i.e. a ferromagnetic Fe-rich phase (Nd.sub.2 Fe.sub.14 B) and a nonmagnetic R-rich phase (Nd.sub.97 Fe.sub.3), and has BH.sub.max of more than 38.0 MGOe.
摘要翻译： 公开了一种永磁体，其包括由稀土元素（R），硼和铁组成的烧结合金。 该永磁体基本上由两相体系构成，即铁磁性富Fe相（Nd2Fe14B）和非磁性富R相（Nd97Fe3），BHmax大于38.0MGOe。
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公开(公告)号：US4878964A
公开(公告)日：1989-11-07
申请号：US249945
申请日：1988-09-27
CPC分类号： H01F1/057 , H01F1/0577
摘要： A permanent magnetic alloy essentially consists of 10 to 40% by weight of R, 0.1 to 0.8% by weight of boron, 50 to 300 ppm by weight of oxygen and the balance of iron, where R is at least one component selected from the group consisting of yttrium and the rate-earth elements.An alloy having this composition has a high coercive force .sub.I H.sub.C and a high residual magnetic flux density and therefore has a high maximum energy product.
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5.发明授权
公开(公告)号：US4827235A
公开(公告)日：1989-05-02
申请号：US73184
申请日：1987-07-14
IPC分类号： G01R33/383 , H01F7/02 , H01F1/24 , C04B35/32
CPC分类号： G01R33/383 , H01F7/0278
摘要： A magnetic field generator comprises a permanent magnet, and pole pieces magnetically connected to the permanent magnet. The pole pieces are disposed to face each other to generate a magnetic field between them, and have a specific resistance of 20 .mu..OMEGA.-cm or more. The permanent magnet comprises a sintered alloy including iron as a main component, a rare earth element including yttrium, cobalt, and boron. The permanent magnet includes, as its main part, a strong magnetic Fe-rich phase of a tetragonal system, as well as a non-magnetic Laves phase, and preferably has a maximum energy product of 38 MGOe or more.
摘要翻译： 磁场发生器包括永磁体和与永磁体磁连接的极片。 磁极片彼此面对配置，在它们之间产生磁场，电阻值为20μΩEGEG-cm以上。 永磁体包括以铁为主要成分的烧结合金，包括钇，钴和硼的稀土元素。 永久磁铁作为其主要部分包括四方晶系的强磁铁富相以及非磁性Laves相，优选具有38MGOe以上的最大能量乘积。
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公开(公告)号：US4793874A
公开(公告)日：1988-12-27
申请号：US11609
申请日：1987-02-06
CPC分类号： H01F1/057 , H01F1/0577
摘要： A permanent magnetic alloy essentially consists of 10 to 40% by weight of R, 0.1 to 8% by weight of boron, 50 to 300 ppm by weight of oxygen and the balance of iron, where R is at least one component selected from the group consisting of yttrium and the rare-earth elements.An alloy having this composition has a high coercive force .sub.I H.sub.C and a high residual magnetic flux density and therefore has a high maximum energy product.
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公开(公告)号：US4859254A
公开(公告)日：1989-08-22
申请号：US905397
申请日：1986-09-10
申请人： Tetsuhiko Mizoguchi , Isao Sakai , Hiromi Niu , Koichiro Inomata
发明人： Tetsuhiko Mizoguchi , Isao Sakai , Hiromi Niu , Koichiro Inomata
CPC分类号： H01F1/0577
摘要： A permanent magnet according to the present invention is characterized in that it is composed of an alloy comprising mainly of iron, and R (rare earth element including yttrium), cobalt, and boron, wherein the alloy is formed principally of ferromagnetic Fe-rich phase of tetragonal system and includes a nonmagnetic Laves phase. Compared with the prior rare earth-Fe based magnet, it has higher Curie temperature and has excellent magnetic characteristics, especially the temperature characteristics.
摘要翻译： 根据本发明的永磁体的特征在于，它由主要由铁组成的合金和R（包括钇）的稀土元素，钴和硼组成，其中合金主要由铁磁富Fe相形成 的四方系统，包括非磁性Laves相。 与现有的稀土 - 铁基磁体相比，具有较高的居里温度，具有优异的磁特性，特别是温度特性。
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公开(公告)号：US4664724A
公开(公告)日：1987-05-12
申请号：US773547
申请日：1985-09-09
CPC分类号： H01F1/057 , H01F1/0577
摘要： A permanent magnetic alloy essentially consists of 10 to 40% by weight of R, 0.1 to 8% by weight of boron, 50 to 300 ppm by weight of oxygen and the balance of iron, where R is at least one component selected from the group consisting of yttrium and the rare-earth elements.An alloy having this composition has a high coercive force .sub.I H.sub.C and a high residual magnetic flux density and therefore has a high maximum energy product.
摘要翻译： 永磁合金基本上由10〜40重量％的R，0.1〜8重量％的硼，50〜300重量ppm的氧和余量的铁组成，其中R为至少一种选自 由钇和稀土元素组成。 具有这种组成的合金具有高矫顽力IHC和高剩余磁通密度，因此具有高的最大能量积。
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公开(公告)号：US5260615A
公开(公告)日：1993-11-09
申请号：US723305
申请日：1991-06-28
CPC分类号： H03H9/426
摘要： A magnetoelastic wave device comprising a substrate, a magnetostrictive film formed over the substrate, a wave generating section, a wave receiving section, and a modulation magnetic field generating section. The magnetostrictive film has an axis of easy magnetization which is substantially axis and extends parallel to the major surfaces of the magnetostrictive film.
摘要翻译： 一种磁弹性波装置，包括基板，形成在基板上的磁致伸缩膜，波发生部，波接收部和调制磁场产生部。 磁致伸缩薄膜具有易磁化的轴线，该轴线基本上是轴线，并平行于磁致伸缩薄膜的主表面延伸。
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公开(公告)号：US06593841B1
公开(公告)日：2003-07-15
申请号：US08701918
申请日：1996-08-23
申请人： Tetsuhiko Mizoguchi , Toshiro Sato , Masashi Sahashi , Michio Hasegawa , Hiroshi Tomita , Atsuhito Sawabe
发明人： Tetsuhiko Mizoguchi , Toshiro Sato , Masashi Sahashi , Michio Hasegawa , Hiroshi Tomita , Atsuhito Sawabe
IPC分类号： H01F500
CPC分类号： H01F17/0006 , H01F2017/0066 , H01F2017/0086 , Y10T29/4902
摘要： Disclosed herein is a planar magnetic element comprising a substrate, a first magnetic layer arranged over the substrate, a first insulation layer arranged over the first magnetic layer, a planer coil formed of a conductor, having a plurality of turns, arranged over the first insulation layer and having a gap aspect ratio of at least 1, the gap aspect ratio being the ratio of the thickness of the conductor to the gap between any adjacent two of the turns, a second insulation layer arranged over the planar coil, and a second magnetic layer arranged over the second insulation layer. When used as an inductor, the planar magnetic element has a great quality coefficient Q. When used as a transformer, it has a large gain and a high voltage ratio. Since the element is small and thin, it is suitable for use in an integrated circuit, and can greatly contribute to miniaturization of electronic devices.
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