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    Magnetic alloy material and method of making the magnetic alloy material
    1.
    发明授权
    Magnetic alloy material and method of making the magnetic alloy material 有权
    磁性合金材料及其制造方法

    公开(公告)号：US07670443B2

    公开(公告)日：2010-03-02

    申请号：US11673729

    申请日：2007-02-12

    申请人： Ryosuke Kogure ,  Hirokazu Kanekiyo ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

    发明人： Ryosuke Kogure ,  Hirokazu Kanekiyo ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

    IPC分类号： H01F1/053

    CPC分类号： H01F1/015 ,  H01F1/0571

    摘要： A method of making a magnetic alloy material includes the steps of: preparing a melt of an alloy material having a predetermined composition; rapidly cooling and solidifying the melt to obtain a rapidly solidified alloy represented by: Fe100-a-b-cREaAbTMc where RE is at least one rare-earth element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm and including at least about 90 at % of La; A is at least one element selected from Al, Si, Ga, Ge and Sn; TM is at least one transition metal element selected from Sc, Ti, V, Cr, Mn, Co, Ni, Cu and Zn; and 5 at %≦a≦10 at %, 4.7 at %≦b≦18 at % and 0 at %≦c≦9 at %; and producing a compound phase having an NaZn13-type crystal structure in at least about 70 vol % of the rapidly solidified alloy.

    摘要翻译： 制造磁性合金材料的方法包括以下步骤：制备具有预定组成的合金材料的熔体; 快速冷却和固化熔体，得到一种由Fe100-ab-cREaAbTMc表示的快速固化的合金，其中RE是选自La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Tb中的至少一种稀土元素， Dy，Ho，Er和Tm，并且包括至少约90原子％的La; A是选自Al，Si，Ga，Ge和Sn中的至少一种元素; TM是选自Sc，Ti，V，Cr，Mn，Co，Ni，Cu和Zn中的至少一种过渡金属元素; 和5 at％＆nlE; a＆nlE; 10 at％，4.7 at％＆nlE; b＆nlE; 18 at％和0 at％＆nlE; c＆nlE; 9 at％; 并在至少约70vol％的快速凝固合金中生产具有NaZn13型晶体结构的复合相。

    Magnetic alloy material and method of making the magnetic alloy material
    2.
    发明授权
    Magnetic alloy material and method of making the magnetic alloy material 有权
    磁性合金材料及其制造方法

    公开(公告)号：US07186303B2

    公开(公告)日：2007-03-06

    申请号：US10642276

    申请日：2003-08-18

    申请人： Ryosuke Kogure ,  Hirokazu Kanekiyo ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

    发明人： Ryosuke Kogure ,  Hirokazu Kanekiyo ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

    IPC分类号： H01F1/055

    CPC分类号： H01F1/015 ,  H01F1/0571

    摘要： A method of making a magnetic alloy material includes the steps of: preparing a melt of an alloy material having a predetermined composition; rapidly cooling and solidifying the melt to obtain a rapidly solidified alloy represented by: Fe100-a-b-cREaAbTMc where RE is at least one rare-earth element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm and including at least about 90 at % of La; A is at least one element selected from Al, Si, Ga, Ge and Sn; TM is at least one transition metal element selected from Sc, Ti, V, Cr, Mn, Co, Ni, Cu and Zn; and 5 at %≦a≦10 at %, 4.7 at %≦b≦18 at % and 0 at %≦c≦9 at %; and producing a compound phase having an NaZn13-type crystal structure in at least about 70 vol % of the rapidly solidified alloy.

    摘要翻译： 制造磁性合金材料的方法包括以下步骤：制备具有预定组成的合金材料的熔体; 快速冷却和固化熔体以获得由以下物质表示的快速固化的合金：Fe / SUB>其中RE是选自La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Tb，Dy，Ho，Er和Tm中的至少一种稀土元素，并且包括至少约90at％的La ; A是选自Al，Si，Ga，Ge和Sn中的至少一种元素; TM是选自Sc，Ti，V，Cr，Mn，Co，Ni，Cu和Zn中的至少一种过渡金属元素; 和5原子％<= a <= 10原子％，4.7原子％<= b <= 18原子％和0原子％<= c <= 9原子％ 并在至少约70vol％的快速凝固合金中生产具有NaZn 13 N型晶体结构的化合物相。

    METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNETS, AND RARE EARTH PERMANENT MAGNETS
    5.
    发明申请
    METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNETS, AND RARE EARTH PERMANENT MAGNETS 审中-公开
    生产稀土永磁体的方法和稀土永磁体

    公开(公告)号：US20130068992A1

    公开(公告)日：2013-03-21

    申请号：US13698748

    申请日：2011-05-19

    申请人： Kazuhiro Hono ,  Tadakatsu Ohkubo ,  Hossein Sepehri Amin ,  Noriyuki Nozawa ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

    发明人： Kazuhiro Hono ,  Tadakatsu Ohkubo ,  Hossein Sepehri Amin ,  Noriyuki Nozawa ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

    IPC分类号： H01F1/01

    CPC分类号： C22C33/0278 ,  B22F2998/10 ,  C21D6/00 ,  C22C38/005 ,  H01F1/0573 ,  H01F41/0266 ,  H01F41/0293 ,  B22F3/02 ,  B22F3/1017 ,  B22F3/14

    摘要： An R-T-B based permanent magnet powder, which has been made by an HDDR process and which has an average crystal grain size of 0.1 μm to 1 μm and a crystal grain aspect ratio (ratio of the major axis size to the minor axis size) of 2 or less, is provided (Step (A)). R is a rare-earth element, of which at least 95 at % is Nd and/or Pr, and T is either Fe alone or Fe partially replaced with Co and/or Ni and is a transition metal element, of which at least 50 at % is Fe. Meanwhile, an R′—Cu based alloy powder, which is made up of R′ and Cu, which accounts for 2 at % to 50 at % of the alloy powder, is also provided (Step (B)). R′ is a rare-earth element, of which at least 90 at % is Nd and/or Pr but which includes neither Dy nor Tb. The R-T-B based permanent magnet powder and the R′—Cu based alloy powder are mixed together to obtain a mixed powder (Step (C)). And then the mixed powder is subjected to a heat treatment process at a temperature of 500° C. to 900° C. in either an inert ambient gas or a vacuum (Step (D)).

    摘要翻译： 通过HDDR法制造的平均晶粒尺寸为0.1μm〜1μm，晶粒长宽比（长轴尺寸与短轴尺寸的比）为2的RTB型永久磁铁粉末 （步骤（A））。 R是稀土元素，其中至少95原子％是Nd和/或Pr，T是单独的Fe或Fe部分被Co和/或Ni代替，并且是过渡金属元素，其中至少50 at％是Fe。 同时，还提供由R'和Cu组成的R'-Cu基合金粉末，其占合金粉末的2at％至50at％（步骤（B））。 R'是稀土元素，其中至少90原子％是Nd和/或Pr，但不包括Dy和Tb。 将R-T-B系永久磁铁粉末和R'-Cu系合金粉末混合，得到混合粉末（工序（C））。 然后将混合粉末在惰性环境气体或真空中在500℃至900℃的温度下进行热处理（步骤（D））。

    R-Fe-B microcrystalline high-density magnet and process for production thereof
    7.
    发明授权
    R-Fe-B microcrystalline high-density magnet and process for production thereof 有权
    R-Fe-B微晶高密度磁铁及其制造方法

    公开(公告)号：US08128758B2

    公开(公告)日：2012-03-06

    申请号：US12254967

    申请日：2008-10-21

    申请人： Noriyuki Nozawa ,  Takeshi Nishiuchi ,  Satoshi Hirosawa ,  Tomohito Maki

    发明人： Noriyuki Nozawa ,  Takeshi Nishiuchi ,  Satoshi Hirosawa ,  Tomohito Maki

    IPC分类号： H01F1/057

    CPC分类号： H01F41/0273 ,  B22F3/11 ,  B22F2003/248 ,  B22F2998/10 ,  C22C38/005 ,  C22C2202/02 ,  H01F1/0573 ,  H01F1/0576 ,  H01F1/0577 ,  H01F1/0578 ,  H01F41/0293 ,  B22F3/02 ,  B22F3/24

    摘要： An R—Fe—B based rare-earth alloy powder with a mean particle size of less than about 20 μm is provided and compacted to make a powder compact. Next, the powder compact is subjected to a heat treatment at a temperature of about 550° C. to less than about 1,000° C. within hydrogen gas, thereby producing hydrogenation and disproportionation reactions (HD processes). Then, the powder compact is subjected to another heat treatment at a temperature of about 550° C. to less than about 1,000° C. within either a vacuum or an inert atmosphere, thereby producing desorption and recombination reactions and obtaining a porous material including fine crystal grains, of which the density is about 60% to about 90% of their true density and which have an average crystal grain size of about 0.01 μm to about 2 μm (DR processes). Thereafter, the porous material is subjected to yet another heat treatment at a temperature of about 750° C. to less than about 1,000° C. within either the vacuum or the inert atmosphere, thereby further increasing its density to about 93% or more of their true density and making an R—Fe—B based microcrystalline high-density magnet.

    摘要翻译： 提供平均粒度小于约20μm的R-Fe-B基稀土合金粉末并压实成粉末压块。 接着，在氢气中，在约550℃至小于约1000℃的温度下对粉体进行热处理，由此进行氢化和歧化反应（HD工艺）。 然后，在真空或惰性气氛中，将粉末压块在约550℃至小于约1000℃的温度下进行另外的热处理，从而产生解吸和重组反应，并获得包括精细的多孔材料 晶粒，其密度为其真密度的约60％至约90％，并且其平均晶粒尺寸为约0.01μm至约2μm（DR工艺）。 此后，多孔材料在真空或惰性气氛中在约750℃至小于约1000℃的温度下进行另外的热处理，从而进一步将其密度提高到约93％以上 它们的真实密度并制成R-Fe-B基微晶高密度磁体。

    Rare earth metal-based permanent magnet, and process for producing the same
    9.
    发明授权
    Rare earth metal-based permanent magnet, and process for producing the same 有权

    公开(公告)号：US07053745B2

    公开(公告)日：2006-05-30

    申请号：US10068970

    申请日：2002-02-11

    申请人： Kohshi Yoshimura ,  Takeshi Nishiuchi ,  Fumiaki Kikui

    发明人： Kohshi Yoshimura ,  Takeshi Nishiuchi ,  Fumiaki Kikui

    IPC分类号： H01F7/02

    CPC分类号： H01F41/026

    摘要： A rare earth metal-based permanent magnet has a film layer formed substantially of only a fine metal powder on a metal forming the surface of the magnet. The rare earth metal-based permanent magnet having the film layer on its surface is produced in the following manner: A rare earth metal-based permanent magnet and a fine metal powder forming material are placed into a treating vessel, where both of them are vibrated and/or agitated, whereby a film layer made of a fine metal powder produced from the fine metal powder producing material is formed on a metal forming the surface of the magnet. Thus, the formation of a corrosion-resistant film such as plated film can be achieved at a high thickness accuracy by forming an electrically conductive layer uniformly and firmly on the entire surface of the magnet without use of a third component such as a resin and a coupling agent.

    Deposited-film forming apparatus
    10.
    发明申请
    Deposited-film forming apparatus 有权

    公开(公告)号：US20050126495A1

    公开(公告)日：2005-06-16

    申请号：US11049961

    申请日：2005-02-04

    申请人： Takeshi Nishiuchi ,  Ikuo Shimamoto ,  Fumiaki Kikui ,  Yoshimi Tochishita ,  Kazumitsu Sato

    发明人： Takeshi Nishiuchi ,  Ikuo Shimamoto ,  Fumiaki Kikui ,  Yoshimi Tochishita ,  Kazumitsu Sato

    IPC分类号： C23C14/50 ,  H01F1/055 ,  H01F41/02 ,  C23C16/00

    CPC分类号： C23C14/505 ,  H01F1/0556 ,  H01F41/026

    摘要： With the deposited-film forming apparatus according to the first embodiment of the present invention, the distance between the tubular barrel and the evaporating section can be varied, unlike the prior art deposited-film forming apparatus and hence, the efficient formation of the deposited film on the surface of each of the work pieces accommodated in the tubular barrel and the inhibition of the softening of the formed film can be achieved simultaneously. Therefore, it is possible to inhibit the damaging of the deposited film formed on the surface of each of the work pieces and the production of projections on the deposited film, and to form a deposited film at a high quality in respect of a corrosion resistance and the like and at low cost. With the deposited-film forming apparatus according to the second embodiment of the present invention, the distance between the accommodating section defined in the tubular barrel and the evaporating section can be varied and hence, this deposited-film forming apparatus also exhibits an effect similar to that in the deposited-film forming apparatus according to the first embodiment of the present invention.