公开(公告)号：US09865382B2

公开(公告)日：2018-01-09

申请号：US14236195

申请日：2012-07-30

申请人： Shinya Tabata ,  Kazumasa Shintani ,  Takuya Onimura

发明人： Shinya Tabata ,  Kazumasa Shintani ,  Takuya Onimura

IPC分类号： H01F1/20 ,  B22D11/00 ,  C22C38/10 ,  C22C38/16 ,  H01F1/057 ,  B22D11/06 ,  C22C38/00 ,  C22C38/06

CPC分类号： H01F1/20 ,  B22D11/0651 ,  B22F1/0055 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0571 ,  H01F1/0577

摘要： Provided are raw material alloy flakes for a rare earth sintered magnet and a method for producing the same. The alloy flakes have a roll-cooled face, and (1) contain at least one R selected from rare earth metal elements including Y, B, and the balance M including iron, at a particular ratio; (2) as observed in a micrograph at a magnification of 100× of its roll-cooled face, have not less than 5 crystals each of which is a dendrite grown radially from a point of crystal nucleation, and crosses a line segment corresponding to 880 μm; and (3) as observed in a micrograph at a magnification of 200× of its section taken generally perpendicularly to its roll-cooled face, have an average distance between R-rich phases of not less than 1 μm and less than 10 μm.

公开(公告)号：US07722726B2

公开(公告)日：2010-05-25

申请号：US10599482

申请日：2005-03-31

申请人： Kazumasa Shintani ,  Ryo Murakami ,  Kazuhiko Yamamoto

发明人： Kazumasa Shintani ,  Ryo Murakami ,  Kazuhiko Yamamoto

IPC分类号： H01F1/053

CPC分类号： C22C33/02 ,  B22D11/0651 ,  B22F1/0055 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0441 ,  C22C38/005 ,  H01F1/0577 ,  H01F41/0266 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10 ,  B22F9/06 ,  B22F9/002 ,  B22F2207/07

摘要： The invention provides a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites of the 2-14-1 phase, which inhibits formation of chill, and which produces flakes that are pulverized into powder of a uniform particle size in the pulverization step in the production of a rare earth sintered magnet, and that are pulverized into powder compactable into a product with a controlled shrink ratio, and alloy flakes for a rare earth sintered magnet obtained by the method, and a rare earth sintered magnet having excellent magnetic properties. The present method includes preparing an alloy melt of a composition consisting of R of rare earth metal elements and the balance M including B and Fe, and supplying and solidifying the alloy melt on a cooling roll, wherein the roll has on its surface linear nucleation inhibiting portions for inhibiting formation of dendrites or the like, and nucleating portions for formation of the dendrites, and wherein the inhibiting portions have a region with a width of more than 100 μm.

摘要翻译： 本发明提供一种制备稀土烧结磁体的合金薄片的方法，其使得富含R区的间隔，尺寸，取向和形状均匀，从而抑制2-14-1相的树突，从而抑制冷却 并且在制造稀土烧结磁体的粉碎步骤中产生粉碎成均匀粒径的粉末，并将其粉碎成可压缩成具有可控收缩率的产品的粉末，以及用于 通过该方法获得的稀土类烧结磁体和具有优异磁性的稀土类烧结磁体。 本发明的方法包括制备由稀土金属元素的R组成的组合物和包括B和Fe的余量M的合金熔体，并且在冷却辊上提供和固化合金熔体，其中该辊在其表面上具有线性成核抑制 用于抑制枝晶等的形成的部分，以及用于形成枝晶的成核部分，其中抑制部分具有宽度大于100μm的区域。

公开(公告)号：US08105446B2

公开(公告)日：2012-01-31

申请号：US12756689

申请日：2010-04-08

申请人： Kazumasa Shintani ,  Ryo Murakami ,  Kazuhiko Yamamoto

发明人： Kazumasa Shintani ,  Ryo Murakami ,  Kazuhiko Yamamoto

IPC分类号： H01F1/057

CPC分类号： C22C33/02 ,  B22D11/0651 ,  B22F1/0055 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0441 ,  C22C38/005 ,  H01F1/0577 ,  H01F41/0266 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10 ,  B22F9/06 ,  B22F9/002 ,  B22F2207/07

摘要： Disclosed are a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites of the 2-14-1 phase, and alloy flakes for a rare earth sintered magnet obtained by the method. A rare earth sintered magnet employing the alloy flakes is also disclosed.

摘要翻译： 公开了一种制备稀土烧结磁体的合金薄片的方法，其使得富R区域和2-14-1相的枝晶的间隔，尺寸，取向和形状以及稀有金属合金薄片均匀 通过该方法获得的地烧结磁体。 还公开了采用合金薄片的稀土烧结磁体。

公开(公告)号：US20100200121A1

公开(公告)日：2010-08-12

申请号：US12756689

申请日：2010-04-08

申请人： Kazumasa Shintani ,  Ryo Murakami ,  Kazuhiko Yamamoto

发明人： Kazumasa Shintani ,  Ryo Murakami ,  Kazuhiko Yamamoto

IPC分类号： H01F1/01 ,  C22C38/00

CPC分类号： C22C33/02 ,  B22D11/0651 ,  B22F1/0055 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0441 ,  C22C38/005 ,  H01F1/0577 ,  H01F41/0266 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10 ,  B22F9/06 ,  B22F9/002 ,  B22F2207/07

摘要： The invention provides a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites of the 2-14-1 phase, which inhibits formation of chill, and which produces flakes that are pulverized into powder of a uniform particle size in the pulverization step in the production of a rare earth sintered magnet, and that are pulverized into powder compactable into a product with a controlled shrink ratio, and alloy flakes for a rare earth sintered magnet obtained by the method, and a rare earth sintered magnet having excellent magnetic properties. The present method includes preparing an alloy melt of a composition consisting of R of rare earth metal elements and the balance M including B and Fe, and supplying and solidifying the alloy melt on a cooling roll, wherein the roll has on its surface linear nucleation inhibiting portions for inhibiting formation of dendrites or the like, and nucleating portions for formation of the dendrites, and wherein the inhibiting portions have a region with a width of more than 100 μm.

摘要翻译： 本发明提供一种制备稀土烧结磁体的合金薄片的方法，其使得富含R区的间隔，尺寸，取向和形状均匀，从而抑制2-14-1相的树突，从而抑制冷却的形成 并且在制造稀土烧结磁体的粉碎步骤中产生粉碎成均匀粒径的粉末，并将其粉碎成可压缩成具有可控收缩率的产品的粉末，以及用于 通过该方法获得的稀土类烧结磁体和具有优异磁性的稀土类烧结磁体。 本发明的方法包括制备由稀土金属元素的R组成的组合物和包括B和Fe的余量M的合金熔体，并且在冷却辊上提供和固化合金熔体，其中该辊在其表面上具有线性成核抑制 用于抑制枝晶等的形成的部分，以及用于形成枝晶的成核部分，其中抑制部分具有宽度大于100μm的区域。

公开(公告)号：US07338566B2

公开(公告)日：2008-03-04

申请号：US10494677

申请日：2002-11-08

申请人： Kenji Konishi ,  Kazumasa Shintani

发明人： Kenji Konishi ,  Kazumasa Shintani

IPC分类号： H01F1/055 ,  H01F1/008

CPC分类号： H01F1/0558 ,  C22C1/0441 ,  H01F1/0555 ,  H01F1/0557

摘要： The present invention relates to a Sm—Co based magnet alloy useful as a raw material for producing magnets having high magnetic properties, such as sintered or bonded magnets, methods for producing such an alloy, and sintered or bonded magnets having excellent corrosion resistance and high magnetic properties, such as high coercivity and good squareness. The magnetic alloy is composed of an alloy represented by the formula RM with 32.5 to 35.5 wt % R such as Sm and the balance of M such as Co, wherein ratio (B/A) of the X-ray diffraction intensity (B) corresponding to the (119) plane of R2M7 phase to the X-ray diffraction intensity (A) corresponding to the (111) plane of RM5 phase is not higher than 0.1.

摘要翻译： 本发明涉及可用作生产具有高磁性的磁体的原料的Sm-Co基磁体合金，例如烧结或粘结磁体，制造这种合金的方法，以及具有优异的耐腐蚀性和高的烧结或粘结磁体 磁性，如矫顽力高，矩形度好。 磁性合金是由式RM表示的合金，32.5〜35.5％（重量）的R，如Sm，剩余的M，如Co，其中相应的X射线衍射强度（B）的比例（B / A） 到R 2 M 7相的（119）面至相当于RM5（111）面的X射线衍射强度（A） / SUB>相位不大于0.1。

公开(公告)号：US20070199624A1

公开(公告)日：2007-08-30

申请号：US10599482

申请日：2005-03-31

申请人： Kazumasa Shintani ,  Ryo Murakami ,  Kazuhiko Yamamoto

发明人： Kazumasa Shintani ,  Ryo Murakami ,  Kazuhiko Yamamoto

IPC分类号： H01F1/08

CPC分类号： C22C33/02 ,  B22D11/0651 ,  B22F1/0055 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0441 ,  C22C38/005 ,  H01F1/0577 ,  H01F41/0266 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10 ,  B22F9/06 ,  B22F9/002 ,  B22F2207/07

摘要： The invention provides a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites of the 2-14-1 phase, which inhibits formation of chill, and which produces flakes that are pulverized into powder of a uniform particle size in the pulverization step in the production of a rare earth sintered magnet, and that are pulverized into powder compactable into a product with a controlled shrink ratio, and alloy flakes for a rare earth sintered magnet obtained by the method, and a rare earth sintered magnet having excellent magnetic properties. The present method includes preparing an alloy melt of a composition consisting of R of rare earth metal elements and the balance M including B and Fe, and supplying and solidifying the alloy melt on a cooling roll, wherein the roll has on its surface linear nucleation inhibiting portions for inhibiting formation of dendrites or the like, and nucleating portions for formation of the dendrites, and wherein the inhibiting portions have a region with a width of more than 100 μm.

摘要翻译： 本发明提供一种制备稀土烧结磁体的合金薄片的方法，其使得富含R区的间隔，尺寸，取向和形状均匀，从而抑制2-14-1相的树突，从而抑制冷却 并且在制造稀土烧结磁体的粉碎步骤中产生粉碎成均匀粒径的粉末，并将其粉碎成可压缩成具有可控收缩率的产品的粉末，以及用于 通过该方法获得的稀土类烧结磁体和具有优异磁性的稀土类烧结磁体。 本发明的方法包括制备由稀土金属元素的R组成的组合物和包括B和Fe的余量M的合金熔体，并且在冷却辊上提供和固化合金熔体，其中该辊在其表面上具有线性成核抑制 用于抑制枝晶等的形成的部分和用于形成枝晶的成核部分，并且其中抑制部分具有大于100μm的宽度的区域。