Rare earth magnets and method of producing same
    7.
    发明授权
    Rare earth magnets and method of producing same 失效
    稀土磁铁及其制造方法

    公开(公告)号:US5201963A

    公开(公告)日:1993-04-13

    申请号:US800712

    申请日:1991-12-04

    IPC分类号: B22F3/14 H01F1/057

    CPC分类号: H01F1/0576 B22F3/14

    摘要: Rare earth magnets comprising 12 to 20 at % R (where R denotes rare earth elements including at least one selected from neodymium and praseodymium) and 2 to 10 at % boron, with the remainder being TM (where TM=Fe.sub.1-x Co.sub.x (0.ltoreq.x.ltoreq.0.4)) and unavoidable impurities, wherein 50 to 100 vol % of the magnet is formed of recrystallization grains of R.sub.2 Fe.sub.14 B intermetallic compound having a tetragonal crystal structure with an average grain size of 1 to 100 .mu.m and an induced anisotropy P of 0.1 or more (where P=(Br(.parallel.)-Br(.perp.))/(Br(.parallel.)+Br(.perp.)), Br(.parallel.) being residual magnetic flux density along the easy magnetization axis and Br(.perp.) being residual magnetic flux density perpendicular to the easy magnetization axis), and the method of producing the rare earth magnets.

    摘要翻译: 包含12至20at%R(其中R表示包括选自钕和镨中的至少一种的稀土元素)和2至10at%硼的稀土磁体,其余为TM(其中TM = Fe1-xCox(0 < /=x

    Apparatus and method for selecting a printed circuit board

    公开(公告)号:US07080343B2

    公开(公告)日:2006-07-18

    申请号:US10431725

    申请日:2003-05-08

    IPC分类号: G06F17/50 H01L27/10

    摘要: An apparatus and method for selecting an optimum printed circuit board in terms of its intended use before placement of components on the printed circuit board, information about components to be mounted on the printed circuit board, and an outer size of the printed circuit board is provided. The apparatus includes an input section for inputting information, a storing section for storing information, an arithmetic section for performing an arithmetic calculation using the information stored in the storing section, a display section, and a control section. By deriving an index in the arithmetic section, selection of the optimum printed circuit board can be accomplished.

    Method for collecting impurities in the atmosphere by state and
apparatus for analyzing the same in real time
    9.
    发明授权
    Method for collecting impurities in the atmosphere by state and apparatus for analyzing the same in real time 失效
    通过状态收集大气中的杂质的方法,用于实时分析其中的杂质

    公开(公告)号:US5725634A

    公开(公告)日:1998-03-10

    申请号:US678695

    申请日:1996-07-11

    摘要: A suction pump draws by suction an atmosphere sample into a gas component collecting section to collect a gas component in the atmosphere into an absorption liquid 48a and thereafter collect a particle component into absorption liquids. A liquid transfer pump transfers the absorption liquids to a measurement standby vessel to make them stand by. When measurement of the absorption liquid is completed, a liquid transfer on-off valve opens to transfer the absorption liquids to an analysis apparatus to make it execute measurement. A liquid transfer pump supplies new absorption liquid when a gas component collecting use absorption liquid vessel and first and second stage impinger sections are emptied. By thus executing collecting, condensation and measurement in parallel by the gas component and the particle component, a state-by-state analysis of the impurities in the atmosphere can be automatically executed in real time.

    摘要翻译: 抽吸泵通过抽吸气氛样品抽吸到气体成分收集部分中,以将大气中的气体成分收集到吸收液体48a中,然后将颗粒组分收集到吸收液体中。 液体输送泵将吸收液体传送到测量备用容器以使其处于待机状态。 当吸收液体的测量完成时,液体传送开关阀打开,将吸收液体转移到分析装置,使其进行测量。 当气体组分收集用途吸收液体容器和第一和第二阶段撞击部分被排空时,液体输送泵提供新的吸收液体。 通过这样通过气体成分和颗粒成分并行地进行收集,冷凝和测量,可以实时地自动执行大气中的杂质的逐个状态分析。

    Rare-earth antisotropic powders and magnets and their manufacturing
processes
    10.
    发明授权
    Rare-earth antisotropic powders and magnets and their manufacturing processes 失效
    稀土防腐粉末和磁铁及其制造工艺

    公开(公告)号:US5009706A

    公开(公告)日:1991-04-23

    申请号:US554109

    申请日:1990-07-18

    IPC分类号: H01F1/06 B22F1/00 H01F1/057

    CPC分类号: H01F1/0571 H01F1/0576

    摘要: Rare-earth alloy anisotropic powders consist of, in atomic percent, over 12 percent and not more than 20 percent of R (R is at least one on neodymium and praseodymium or at least one of them and or more rare-earth elements), not less than 4 percent and not more than 10 percent of boron, not less than 0.05 percent and not more than 5 percent of copper and the rest that consists of iron and unavoidable impurities. Up to 20 percent of the iron contained is replaceable with cobalt. The alloy powders are made up of flat crystal grains having mean thickness h (the shortest measure), d not smaller than 0.01 .mu.m and not larger than 0.5 .mu.m and ratio d/h not smaller than 2, where d is the means measure of the grains taken at right angles to the widthwide direction thereof, and the alloy powders are magnetically anisotropic. Each rare-earth alloy anisotropic powder is prepared by melting an R-Fe-B-Cu alloy, putting thin ribbons prepared by quenching the melt or a powder prepared by grinding the thin ribbons in a metal container, hermetically sealing the metal container after replacing its inner atmosphere with a vacuum or an inert gas atmosphere, and rolling the thin ribbons or powder, together with the metal container, at a temperature not lower than 500.degree. C. and not higher than 900.degree. C. Rare-earth alloy anisotropic magnets are made by kneading and forming the rare-earth alloy anisotropic powders with not less than 10 percent and not more than 50 percent by volume of resin or by hot-compressing the rare-earth alloy anisotropic powders.

    摘要翻译: 稀土合金各向异性粉末以原子百分比超过12%且不超过20%的R(R是钕和镨上的至少一种或至少其中一种和/或更多的稀土元素),而不是 小于4%且不超过10%的硼,不少于0.05%且不超过5%的铜,其余由铁和不可避免的杂质组成。 含铁量高达20%可替代钴。 合金粉末由具有平均厚度h(最短测量)的平均晶粒构成,d不小于0.01μm且不大于0.5μm,d / h不小于2,其中d是平均值 的晶粒与其宽度方向成直角,并且合金粉末是磁各向异性的。 通过熔化R-Fe-B-Cu合金制备每种稀土合金各向异性粉末,将通过将熔体淬火制成的薄带或通过在金属容器中研磨薄带而制备的粉末,在更换之后气密地密封金属容器 其内部气氛具有真空或惰性气体气氛,并在不低于500℃且不高于900℃的温度下将薄带或粉末与金属容器一起滚动。稀土合金各向异性磁体 通过捏合和形成不少于10%且不大于50体积%的树脂的稀土合金各向异性粉末或通过热压缩稀土合金各向异性粉末来制备。