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    Isotropic rare earth material of high intrinsic induction
    1.
    发明授权
    Isotropic rare earth material of high intrinsic induction 有权
    各向同性稀土材料的高固有感应

    公开(公告)号：US06478890B2

    公开(公告)日：2002-11-12

    申请号：US09756090

    申请日：2001-01-08

    Applicant: Viswanathan Panchanathan ,  William Ray Green ,  Kevin Allen Young

    Inventor： Viswanathan Panchanathan ,  William Ray Green ,  Kevin Allen Young

    IPC: H01F1053

    CPC classification number: C22C1/0441 ,  B22F2998/00 ,  B22F2998/10 ,  H01F1/0571 ,  B22F9/008 ,  B22F9/10 ,  B22F9/04

    Abstract: Isotropic magnetic alloy powder having an intrinsic magnetic induction of at least two third of its magnetic remanence and method for making same are provided. The powder is made from an alloy having a composition comprising, by weight percentage, approximately 15 to 35 percent of one or more rare earth metals, approximately 0.5 to 4.5 percent of boron, and approximately 0 to 20 percent of cobalt, balanced with iron. The alloy powder is made by a process wherein an amount of the alloy is melt and spun in an inert environment, preferably at a distance between an orifice and a wheel being less than one and one half inches, into ribbons, followed by crushing the ribbons into powder and annealing the powder.

    Abstract translation: 提供具有至少其磁残余量的三分之一的固有磁感应的各向同性磁性合金粉末及其制造方法。 粉末由合金制成，该合金具有按重量百分比计包含一种或多种稀土金属的约15％至35％，约0.5％至4.5％的硼和约0％至20％的钴，其与铁平衡。 合金粉末是通过一种方法制成的，其中合金的量在惰性环境中熔融和纺丝，优选地在小于一个半英寸的孔和轮之间的距离处，变成丝带，然后将丝带 粉末并退火粉末。

    Fine grained cobalt-chromium alloys containing carbides made by consolidation of amorphous powders
    3.
    发明授权
    Fine grained cobalt-chromium alloys containing carbides made by consolidation of amorphous powders 失效
    含有通过固结无定形粉末制成的碳化物的细粒钴铬合金

    公开(公告)号：US4473402A

    公开(公告)日：1984-09-25

    申请号：US483828

    申请日：1983-04-11

    Applicant: Ranjan Ray ,  Viswanathan Panchanathan

    Inventor： Ranjan Ray ,  Viswanathan Panchanathan

    IPC: B22F9/00 ,  C22C1/04 ,  C22C45/00 ,  B22F3/14

    CPC classification number: B22F9/008 ,  C22C1/0433 ,  C22C45/008

    Abstract: New cobalt base alloys containing chromium and carbon are disclosed. The alloys are subjected to rapid solidification processing (RSP) technique which produces cooling rates between 10.sup.5 to 10.sup.7 .degree. C./sec. The as-quenched ribbon, powder etc. consists predominantly of amorphous phase. The amorphous phase is subjected to suitable heat treatments so as to produce a transformation to a microcrystalline alloy which includes carbides; this heat treated alloy exhibits superior mechanical properties for numerous industrial applications.

    Abstract translation: 公开了含有铬和碳的新型钴基合金。 该合金经受快速凝固处理（RSP）技术，其产生105至107℃/秒之间的冷却速率。 淬火带，粉末等主要由非晶相组成。 对非晶相进行适当的热处理，以产生包括碳化物的微晶合金的转变; 该热处理合金对于许多工业应用表现出优异的机械性能。

    Iron-aluminum alloys containing boron which have been processed by rapid solidification process and method
    4.
    发明授权
    Iron-aluminum alloys containing boron which have been processed by rapid solidification process and method 失效
    含有硼的铁铝合金已经通过快速凝固过程和方法加工

    公开(公告)号：US4405368A

    公开(公告)日：1983-09-20

    申请号：US261626

    申请日：1981-05-07

    Applicant: Ranjan Ray ,  Viswanathan Panchanathan ,  Bill C. Giessen

    Inventor： Ranjan Ray ,  Viswanathan Panchanathan ,  Bill C. Giessen

    IPC: C22C45/02 ,  F16H29/10

    CPC classification number: C22C45/02 ,  Y10T428/12431

    Abstract: New iron base alloys containing aluminum and boron are disclosed. The alloys are subjected to a rapid solidification processing (RSP) technique which produces cooling rates between .about.10.sup.5 to 10.sup.7 .degree. C./sec. The as-quenched ribbon or powder, etc consists primarily of a metastable crystalline solid solution phase. The metastable crystalline phases are subjected to suitable heat treatments so as to produce a transformation to a stable multiphase microstructure which includes borides. The heat treated alloy exhibits superior mechanical properties with good corrosion and oxidation resistance.

    Abstract translation: 公开了含有铝和硼的新铁基合金。 对合金进行快速凝固处理（RSP）技术，其产生105至107℃/秒之间的冷却速率。 淬火的带或粉末等主要由亚稳态的结晶固溶体相组成。 对亚稳态结晶相进行适当的热处理，以产生包含硼化物的稳定的多相微结构的转变。 热处理合金具有优异的机械性能，具有良好的耐腐蚀和抗氧化性。

    Rare-earth iron-boron magnet containing cerium and lanthanum
    6.
    发明授权
    Rare-earth iron-boron magnet containing cerium and lanthanum 有权
    含铈和镧的稀土铁硼磁铁

    公开(公告)号：US06261387B1

    公开(公告)日：2001-07-17

    申请号：US09405239

    申请日：1999-09-24

    Applicant: Viswanathan Panchanathan

    Inventor： Viswanathan Panchanathan

    IPC: H01F1057

    CPC classification number: H01F1/0578 ,  H01F1/057

    Abstract: Permanent rare-earth magnets containing Ce are fabricated with coercivity greater than 4 kOe. One composition for such magnets is [CeyR1−y]z(F1−vBv)1−z, where R is one or more rare-earth elements, F is Fe or Fe—Co, and the relative elemental atomic composition is 0.0

    Abstract translation: 含有Ce的永磁稀土磁体制造的矫顽力大于4kOe。 这种磁体的一种组成是[CeyR1-y] z（F1-vBv）1-z，其中R是一种或多种稀土元素，F是Fe或Fe-Co，相对元素原子组成为0.0

    High remanence hot pressed magnets
    8.
    发明授权
    High remanence hot pressed magnets 失效
    高剩磁热压磁铁

    公开(公告)号：US5514224A

    公开(公告)日：1996-05-07

    申请号：US148155

    申请日：1993-11-05

    Applicant: Viswanathan Panchanathan

    Inventor： Viswanathan Panchanathan

    IPC: C22C33/02 ,  C22C38/00 ,  H01F1/057 ,  H01F1/08 ,  H01F41/02

    CPC classification number: H01F1/0576

    Abstract: Isotropic hot pressed iron-rare earth metal permanent magnets are provided wherein the hot pressed permanent magnet exhibits magnetic remanences of at least about 9 kG, and most typically about 10 kG. Preferred compositions include a relatively low rare earth content coupled with an optimal amount of boron. The preferred composition is, on a weight percent basis, from about 5 to about 25 percent rare earth, most preferably about 10 to about 20 percent rare earth, from about 0.5 to about 4.5 percent boron, most preferably from about 0.8 to about 4.0 percent boron, wherein the total combination of the rare earths and boron ranges from about 9 percent to about 26 percent, most preferably from about 12 percent to about 22 percent, and optionally from about 2 percent to about 16 percent cobalt, with the balance being essentially iron.

    Abstract translation: 提供各向同性的热压铁 - 稀土金属永磁体，其中热压永磁体具有至少约9kG，最通常约10kG的磁残余。 优选的组合物包括与最佳量的硼相结合的相对较低的稀土含量。 优选的组合物以重量百分比计约5至约25％的稀土，最优选约10至约20％的稀土，约0.5至约4.5％的硼，最优选约0.8至约4.0％ 硼，其中稀土和硼的总组合范围为约9％至约26％，最优选约12％至约22％，和任选地约2％至约16％的钴，余量基本上为 铁。

    Hot pressed magnets formed from anisotropic powders
    9.
    发明授权
    Hot pressed magnets formed from anisotropic powders 失效
    由各向异性粉末形成的热压磁铁

    公开(公告)号：US5352301A

    公开(公告)日：1994-10-04

    申请号：US979030

    申请日：1992-11-20

    Applicant: Viswanathan Panchanathan ,  John J. Croat

    Inventor： Viswanathan Panchanathan ,  John J. Croat

    IPC: B22F3/14 ,  C22C33/02 ,  H01F1/057 ,  H01F1/08 ,  H01F41/02

    CPC classification number: H01F1/0576 ,  B22F3/14

    Abstract: A method is provided for forming a high energy product, anisotropic, hot pressed iron-rare earth metal permanent magnet without the requirement for magnetic alignment during pressing or additional hot working steps. The method of this invention includes providing a quantity of anisotropic iron-rare earth metal particles and hot pressing the particles so as to form a substantially anisotropic permanent magnet. The pressed permanent magnet of this invention permits a greater variety of shapes as compared to conventional hot worked anisotropic permanent magnets. As a result, the magnetic properties and shape of the permanent magnet of this invention can be tailored to meet the particular needs of a given application.

    Abstract translation: 提供一种用于形成高能产物，各向异性，热压铁 - 稀土金属永磁体的方法，而不需要在压制或额外的热加工步骤中进行磁对准。 本发明的方法包括提供一定数量的各向异性铁 - 稀土金属颗粒并热压颗粒以形成基本上各向异性的永磁体。 与常规热加工各向异性永磁体相比，本发明的压制永磁体允许更多种形状。 结果，本发明的永磁体的磁特性和形状可以被定制以满足给定应用的特定需要。

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