Functionally graded rare earth permanent magnet
    81.
    发明授权
    Functionally graded rare earth permanent magnet 有权
    功能分级稀土永磁体

    公开(公告)号:US07488395B2

    公开(公告)日:2009-02-10

    申请号:US11340521

    申请日:2006-01-27

    IPC分类号: H01F1/057 H01F1/058

    摘要: A functionally graded rare earth permanent magnet having a reduced eddy current loss in the form of a sintered magnet body having a composition RaEbTcAdFeOfMg is obtained by causing E and fluorine atoms to be absorbed in a R—Fe—B sintered magnet body from its surface. F is distributed such that its concentration increases on the average from the center toward the surface of the magnet body, the concentration of E/(R+E) contained in grain boundaries surrounding primary phase grains of (R,E)2T14A tetragonal system is on the average higher than the concentration of E/(R+E) contained in the primary phase grains, the oxyfluoride of (R,E) is present at grain boundaries in a grain boundary region that extends from the magnet body surface to a depth of at least 20 μm, particles of the oxyfluoride having an equivalent circle diameter of at least 1 μm are distributed in the grain boundary region at a population of at least 2,000 particles/mm2, the oxyfluoride is present in an area fraction of at least 1%. The magnet body includes a surface layer having a higher electric resistance than in the interior. In the permanent magnet, the generation of eddy current within a magnetic circuit is restrained.

    摘要翻译: 通过使E和氟原子从其表面吸收到R-Fe-B烧结磁体中,获得具有组成RaEbTcAdFeOfMg的烧结磁体形式的具有减小的涡流损耗的功能梯度稀土永磁体。 F的分布使得其浓度从磁体的中心向表面的平均值增加,包含在(R,E)2T14A四方晶系的主相晶粒周围的晶界中的E /(R + E)的浓度为 平均高于主晶粒中所含的E /(R + E)浓度时,(R,E)的氟氧化物存在于从磁体表面向深度延伸的晶界区域的晶界处 至少20微米的氟氧化物颗粒的当量圆直径至少为1微米的颗粒以至少2000个颗粒/ mm 2的总体分布在晶界区域,氟氧化物以至少1的面积分数存在 %。 磁体包括具有比内部更高的电阻的表面层。 在永磁体中,抑制了磁路内的涡电流的产生。

    Preparation of Rare Earth Permanent Magnet Material
    82.
    发明申请
    Preparation of Rare Earth Permanent Magnet Material 有权
    稀土永磁材料的制备

    公开(公告)号:US20080245442A1

    公开(公告)日:2008-10-09

    申请号:US10572753

    申请日:2005-03-22

    IPC分类号: H01F1/00

    摘要: A method for preparing a rare earth permanent magnet material comprising the steps of: disposing a powder comprising one or more members selected from an oxide of R2, a fluoride of R3, and an oxyfluoride of R4 wherein R2, R3 and R4 each are one or more elements selected from among rare earth elements inclusive of Y and Sc on a sintered magnet form of a R1—Fe—B composition wherein R1 is one or more elements selected from among rare earth elements inclusive of Y and Sc, and heat treating the magnet form and the powder at a temperature equal to or below the sintering temperature of the magnet in vacuum or in an inert gas. The invention offers a high performance, compact or thin permanent magnet having a high remanence and coercivity at a high productivity.

    摘要翻译: 一种制备稀土永磁材料的方法,包括以下步骤:设置一种粉末,其包含一种或多种选自R 2的氧化物,R 3 O 3的氟化物, 和R 4的氟氧化物,其中R 2,R 3,R 4和R 4各自为一个或多个元素 从包含Y和Sc的稀土元素中选择R 1 -Fe-B组合物的烧结磁体形式,其中R 1是选自以下的一种或多种元素: 包括Y和Sc的稀土元素,并且在真空或惰性气体中在等于或低于磁体的烧结温度的温度下对磁体形式和粉末进行热处理。 本发明以高生产率提供具有高剩磁和矫顽力的高性能,紧凑或薄的永久磁铁。

    Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet
    83.
    发明授权
    Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet 有权
    重熔稀土磁铁废料和/或污泥,磁性成形合金和烧结稀土磁体

    公开(公告)号:US07204891B2

    公开(公告)日:2007-04-17

    申请号:US11214768

    申请日:2005-08-31

    IPC分类号: H01F1/057

    摘要: Rare earth magnet scrap and/or sludge is remelted for reuse. Once a rare earth-free magnet-constituent metal feed is loaded in a melting furnace and heated into a melt, a rare earth-containing metal feed and the rare earth magnet scrap and/or sludge are added to the melt, a particulate flux of an alkali metal, alkaline earth metal or rare earth metal halide and having an average particle size of 1–50 μm, preferably wrapped in a metal foil, is added to the melt, and the resulting mixture is melted, from which an alloy ingot is obtained. The valuable elements in the scrap and/or sludge can be recycled. Better separation between the slag and the molten metal ensures that the ingot is obtained from the melt in a high yield.

    摘要翻译: 稀土磁体废料和/或污泥被重熔再利用。 一旦将无稀土磁体组成金属进料装入熔化炉并加热成熔体,将稀土金属进料和稀土磁体废料和/或污泥加入到熔体中, 在熔体中加入碱金属,碱土金属或稀土金属卤化物,其平均粒度为1-50μm,优选包裹在金属箔中,并将所得混合物熔化,合金锭为 获得。 废料和/或污泥中的有价值的元素可以回收利用。 炉渣和熔融金属之间的更好的分离确保锭子以高收率从熔体获得。

    Rare earth permanent magnet
    85.
    发明申请
    Rare earth permanent magnet 有权
    稀土永磁铁

    公开(公告)号:US20060213584A1

    公开(公告)日:2006-09-28

    申请号:US11340502

    申请日:2006-01-27

    IPC分类号: H01F1/057 H01F1/058

    摘要: A rare earth permanent magnet is in the form of a sintered magnet body having a composition R1aR2bTcAdFeOfMg wherein F and R2 are distributed such that their concentration increases on the average from the center toward the surface of the magnet body, and grain boundaries having a concentration of R2/(R1+R2) which is on the average higher than the concentration of R2/(R1+R2) contained in primary phase grains of (R1,R2)2T14A tetragonal system form a three-dimensional network structure which is continuous from the magnet body surface to a depth of at least 10 μm. The invention provides R—Fe—B sintered magnets which exhibit a high coercive force.

    摘要翻译: 稀土永磁体是具有组成R 1的烧结磁体的形式,其中R 1,R 2,R 2, 其中F和R(R)其中F和R 分散使得它们的浓度从磁体的中心朝向表面的平均值增加,并且具有浓度为R 2 /(R 0 其平均高于R 2的浓度(R 1 + R 2 + R 2) 包含在(R 1,R 2,R 2)2)2的第一相晶粒中的SUP> 2 三角形系统形成从磁体表面连续至至少10um的深度的三维网状结构。 本发明提供了表现出高矫顽力的R-Fe-B烧结磁体。

    Nd-Fe-B rare earth permanent magnet material
    86.
    发明申请
    Nd-Fe-B rare earth permanent magnet material 有权
    Nd-Fe-B稀土永磁材料

    公开(公告)号:US20060137767A1

    公开(公告)日:2006-06-29

    申请号:US11315099

    申请日:2005-12-23

    IPC分类号: H01F1/057

    摘要: A rare earth permanent magnet material is based on an R—Fe—Co—B—Al—Cu system wherein R is at least one element selected from Nd, Pr, Dy, Tb, and Ho, 15 to 33% by weight of Nd being contained. At least two compounds selected from M-B, M-B—Cu and M-C compounds (wherein M is Ti, Zr or Hf) and an R oxide have precipitated within the alloy structure as grains having an average grain size of up to 5 μm which are uniformly distributed in the alloy structure at intervals of up to 50 μm.

    摘要翻译: 稀土永磁材料是基于R-Fe-Co-B-Al-Cu系,其中R是选自Nd,Pr,Dy,Tb和Ho中的至少一种元素,15至33重量%的Nd 被包含 选自MB,MB-Cu和MC化合物(其中M为Ti,Zr或Hf)和R氧化物的至少两种化合物在合金结构内析出,其平均粒度高达5um的颗粒均匀分布 在合金结构中间隔高达50毫米。

    Door lock release device
    87.
    发明授权
    Door lock release device 失效
    门锁释放装置

    公开(公告)号:US07064456B2

    公开(公告)日:2006-06-20

    申请号:US10389739

    申请日:2003-03-18

    IPC分类号: B60K28/14

    摘要: A door lock release device includes an actuator for releasing a door lock, a first detection means for detecting an operation of a door handle, a first control circuit for controlling an actuation of the actuator based on the detected door handle operation, a second detection means for detecting a vehicle state, and a second control circuit independent from the first control circuit for controlling the actuation of the actuator based on the detected vehicle state.

    摘要翻译: 门锁释放装置包括用于释放门锁的致动器,用于检测门把手的操作的第一检测装置,用于基于检测到的门把手操作来控制致动器的致动的第一控制电路,第二检测装置 以及独立于第一控制电路的第二控制电路,用于基于检测到的车辆状态来控制致动器的致动。

    Door lock apparatus for vehicle
    88.
    发明授权
    Door lock apparatus for vehicle 有权
    车门锁装置

    公开(公告)号:US06998969B2

    公开(公告)日:2006-02-14

    申请号:US10673189

    申请日:2003-09-30

    IPC分类号: B60R25/10

    摘要: A door lock apparatus for a vehicle includes an outside switch provided outside of a vehicle for detecting an opening operation of a door from the outside of the vehicle, an actuator for releasing an engagement of a latch mechanism of the door, a control device electrically connected to the outside switch for driving the actuator in response to the opening operation of the door being detected by the outside switch, and a detecting device for detecting an impact added to the vehicle. When the detecting device detects the impact added to the vehicle, the control device disables the opening operation of the door being detected by the outside switch within a first predetermined time from the detection of the impact.

    摘要翻译: 一种用于车辆的门锁装置包括设置在车辆外侧的外部开关,用于检测来自车辆外部的门的打开操作,用于释放门的闩锁机构的接合的致动器,电连接的控制装置 到外部开关,用于响应于由外部开关检测到的门的打开操作来驱动致动器;以及检测装置,用于检测添加到车辆的冲击。 当检测装置检测到车辆的冲击时,控制装置在检测到冲击之后的第一预定时间内禁止被外部开关检测到的门的打开操作。

    Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet
    89.
    发明授权
    Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet 有权
    重熔稀土磁铁废料和/或污泥,磁性成形合金和烧结稀土磁体

    公开(公告)号:US06960240B2

    公开(公告)日:2005-11-01

    申请号:US10191279

    申请日:2002-07-10

    摘要: Rare earth magnet scrap and/or sludge is remelted for reuse. Once a rare earth-free magnet-constituent metal feed is loaded in a melting furnace and heated into a melt, a rare earth-containing metal feed and the rare earth magnet scrap and/or sludge are added to the melt, a particulate flux of an alkali metal, alkaline earth metal or rare earth metal halide and having an average particle size of 1-50 μm, preferably wrapped in a metal foil, is added to the melt, and the resulting mixture is melted, from which an alloy ingot is obtained. The valuable elements in the scrap and/or sludge can be recycled. Better separation between the slag and the molten metal ensures that the ingot is obtained from the melt in a high yield.

    摘要翻译: 稀土磁体废料和/或污泥被重熔再利用。 一旦将无稀土磁体组成金属进料装入熔化炉并加热成熔体,将稀土金属进料和稀土磁体废料和/或污泥加入到熔体中, 在熔体中加入碱金属,碱土金属或稀土金属卤化物,其平均粒度为1-50μm,优选包裹在金属箔中,并将所得混合物熔化,合金锭为 获得。 废料和/或污泥中的有价值的元素可以回收利用。 炉渣和熔融金属之间的更好的分离确保锭子以高收率从熔体获得。