公开(公告)号：US20060159960A1

公开(公告)日：2006-07-20

申请号：US10562798

申请日：2005-02-22

申请人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda ,  Kazuhiro Hirose

发明人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda ,  Kazuhiro Hirose

IPC分类号： B32B15/00 ,  B05D1/12

CPC分类号： H01F1/24 ,  B22F1/02 ,  H01F1/26 ,  H01F3/08 ,  H01F41/0246

摘要： A soft magnetic material includes a plurality of composite magnetic particles. Each of the plurality of composite magnetic particles has: a metal magnetic particle including iron; a lower film surrounding the surface of the metal magnetic particle and including a nonferrous metal; and an insulating upper film surrounding the surface of the lower film and including at least one of oxygen and carbon. The nonferrous metal has an affinity with the at least one of oxygen and carbon included in the upper film that is larger than such affinity of iron; or the nonferrous metal has a diffusion coefficient with respect to the at least one of oxygen and carbon included in the upper film that is smaller than such diffusion coefficient of iron. This configuration provides desirable magnetic properties.

摘要翻译： 软磁性材料包括多个复合磁性颗粒。 多个复合磁性颗粒中的每一个具有：包含铁的金属磁性颗粒; 围绕金属磁性颗粒的表面并包括有色金属的下部膜; 以及包围下膜的表面并且包括氧和碳中的至少一种的绝缘上膜。 有色金属与上层膜中包含的氧和碳中的至少一种具有大于铁的亲和性的亲和力; 或者有色金属相对于上部膜中包含的氧和碳中的至少一种的扩散系数小于铁的扩散系数。 这种构造提供了理想的磁特性。

公开(公告)号：US20050257854A1

公开(公告)日：2005-11-24

申请号：US11127970

申请日：2005-05-11

申请人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda ,  Koji Mimura

发明人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda ,  Koji Mimura

IPC分类号： B22F1/00 ,  B22F1/02 ,  B22F3/00 ,  B22F3/02 ,  B22F3/24 ,  H01F1/24 ,  H01F1/33 ,  H01F41/02 ,  H01F1/22

CPC分类号： H01F1/24 ,  H01F41/0246

摘要： The object of the present invention is to provide a method for manufacturing a soft magnetic material, a soft magnetic material, a method for manufacturing a P/M soft magnetic material, and a P/M soft magnetic material which achieve the desired magnetic properties. In the method for manufacturing the soft magnetic material of the present invention, there is a first heat treatment step (step S3) in which a metal magnetic particle 10, which has iron as its main component, is heat treated to a temperature of 900 degrees C. or greater and less than the melting point of metal magnetic particle 10. After the first heat treatment step (step S3), there is a step for forming a plurality of composite magnetic particles 30 which are metal magnetic particles 10 surrounded by an insulation covering 20 (step S6).

摘要翻译： 本发明的目的是提供一种制造软磁性材料的方法，软磁性材料，制造P / M软磁性材料的方法和实现所需磁性的P / M软磁性材料。 在本发明的软磁性材料的制造方法中，存在以铁为主要成分的金属磁性体10被热处理至900℃的第一热处理工序（步骤S3） ℃以上且小于金属磁性颗粒10的熔点。 在第一热处理步骤（步骤S 3）之后，存在形成由绝缘覆盖物20包围的金属磁性颗粒10的多个复合磁性颗粒30的步骤（步骤S6）。

公开(公告)号：US07998361B2

公开(公告)日：2011-08-16

申请号：US10599003

申请日：2005-03-29

申请人： Kazuhiro Hirose ,  Haruhisa Toyoda ,  Takao Nishioka ,  Naoto Igarashi ,  Toru Maeda ,  Yoshiyuki Shimada

发明人： Kazuhiro Hirose ,  Haruhisa Toyoda ,  Takao Nishioka ,  Naoto Igarashi ,  Toru Maeda ,  Yoshiyuki Shimada

IPC分类号： C04B35/00 ,  C09D5/23 ,  H01F1/00 ,  C01G49/08 ,  C04B35/26 ,  C04B35/64

CPC分类号： B22F1/02 ,  B22F2998/10 ,  H01F1/24 ,  H01F1/33 ,  H01F41/0246 ,  B22F3/02 ,  B22F3/24

摘要： A soft magnetic material includes: a plurality of composite magnetic particles formed from a metal magnetic particle and an insulative coating surrounding a surface of the metal magnetic particle and containing metallic salt phosphate and/or oxide; and a lubricant formed as fine particles added at a proportion of at least 0.001 percent by mass and no more than 0.1 percent by mass relative to the plurality of composite magnetic particles. With this structure, superior lubrication is provided during compacting and desired magnetic characteristics can be obtained after compacting.

摘要翻译： 软磁性材料包括：多个由金属磁性颗粒形成的复合磁性颗粒和围绕金属磁性颗粒的表面的包含金属盐磷酸盐和/或氧化物的绝缘涂层; 以及相对于多个复合磁性粒子以比例为0.001质量％以上0.1质量％以下的微粒子形成的润滑剂。 利用这种结构，在压实过程中提供了优异的润滑，并且在压实后可获得所需的磁特性。

公开(公告)号：US20080061264A1

公开(公告)日：2008-03-13

申请号：US11911657

申请日：2006-03-09

申请人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda

发明人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda

IPC分类号： H01F1/00

CPC分类号： H01F3/08 ,  B22F2003/248 ,  B22F2998/10 ,  B22F2999/00 ,  H01F1/20 ,  H01F1/24 ,  H01F41/0246 ,  B22F9/082 ,  B22F2201/10 ,  B22F1/007 ,  B22F1/0085 ,  B22F2202/17 ,  B22F1/0062 ,  B22F1/0059 ,  B22F1/0096 ,  B22F3/02 ,  B22F3/24 ,  B22F2009/0828 ,  B22F9/04

摘要： A soft magnetic material has a plurality of composite magnetic particles. Each of the plurality of composite magnetic particles has a metal magnetic particle and an insulating coating covering the metal magnetic particle. Each of the plurality of composite magnetic particles has a ratio of a maximum diameter to an equivalent circle diameter greater than 1.0 and at most 1.3, and a specific surface area of at least 0.10 m2/g.

摘要翻译： 软磁性材料具有多个复合磁性粒子。 多个复合磁性颗粒中的每一个具有金属磁性颗粒和覆盖金属磁性颗粒的绝缘涂层。 多个复合磁性颗粒中的每一个具有最大直径与当量圆直径之比大于1.0且至多为1.3，比表面积至少为0.10m 2 / g的比值。

公开(公告)号：US20080041496A1

公开(公告)日：2008-02-21

申请号：US10594961

申请日：2005-03-29

申请人： Toru Maeda ,  Naoto Igarashi ,  Kazuhiro Hirose ,  Haruhisa Toyoda

发明人： Toru Maeda ,  Naoto Igarashi ,  Kazuhiro Hirose ,  Haruhisa Toyoda

IPC分类号： H01F1/12 ,  B22F1/00

CPC分类号： C22C33/02 ,  B22F1/0088 ,  B22F2003/248 ,  B22F2998/10 ,  H01F1/24 ,  H01F1/26 ,  H01F41/0246 ,  B22F9/082 ,  B22F1/0085 ,  B22F1/02 ,  B22F1/0059 ,  B22F3/02 ,  B22F3/24

摘要： A method of producing a soft magnetic material includes the steps of preparing soft magnetic powder containing a plurality of soft magnetic particles etching the soft magnetic powder to remove surfaces of the soft magnetic particles and, after the etching step, heat-treating the soft magnetic powder in a finely divided state at a temperature of not less than 400° C. and not more than 900° C. By this method configured as above, desired magnetic characteristics can be obtained.

摘要翻译： 一种制造软磁性材料的方法包括以下步骤：制备含有多个软磁性颗粒的软磁性粉末，该软磁性粉末蚀刻软磁性粉末以去除软磁性颗粒的表面，并且在蚀刻步骤之后，对软磁性粉末进行热处理 在不低于400℃且不高于900℃的温度下处于细分状态。通过如上构造的方法，可以获得期望的磁特性。

公开(公告)号：US07674342B2

公开(公告)日：2010-03-09

申请号：US10594961

申请日：2005-03-29

申请人： Toru Maeda ,  Naoto Igarashi ,  Kazuhiro Hirose ,  Haruhisa Toyoda

发明人： Toru Maeda ,  Naoto Igarashi ,  Kazuhiro Hirose ,  Haruhisa Toyoda

IPC分类号： H01F1/14

CPC分类号： C22C33/02 ,  B22F1/0088 ,  B22F2003/248 ,  B22F2998/10 ,  H01F1/24 ,  H01F1/26 ,  H01F41/0246 ,  B22F9/082 ,  B22F1/0085 ,  B22F1/02 ,  B22F1/0059 ,  B22F3/02 ,  B22F3/24

摘要： A method of producing a soft magnetic material includes the steps of preparing soft magnetic powder containing a plurality of soft magnetic particles etching the soft magnetic powder to remove surfaces of the soft magnetic particles and, after the etching step, heat-treating the soft magnetic powder in a finely divided state at a temperature of not less than 400° C. and not more than 900° C. By this method configured as above, desired magnetic characteristics can be obtained.

摘要翻译： 一种制造软磁性材料的方法包括以下步骤：制备含有多个软磁性颗粒的软磁性粉末，该软磁性粉末蚀刻软磁性粉末以去除软磁性颗粒的表面，并且在蚀刻步骤之后，对软磁性粉末进行热处理 在不低于400℃且不高于900℃的温度下处于细分状态。通过如上构造的方法，可以获得期望的磁特性。

公开(公告)号：US07579723B2

公开(公告)日：2009-08-25

申请号：US10583517

申请日：2004-12-15

申请人： Haruhisa Toyoda ,  Naoto Igarashi ,  Hitoshi Oyama ,  Yasuhiro Endo ,  Ryoji Mizutani

发明人： Haruhisa Toyoda ,  Naoto Igarashi ,  Hitoshi Oyama ,  Yasuhiro Endo ,  Ryoji Mizutani

IPC分类号： H02K1/02

CPC分类号： H02K1/148 ,  H02K1/02

摘要： A power magnetic core has a start section and a termination section. In the powder magnetic core, lines of magnetic force are formed from the start section to the termination section. The powder magnetic core comprises a first portion disposed on the shortest magnetic path of the lines of magnetic force that connects the start section and the termination section and having a permeability μa and a second portion disposed apart from the shortest magnetic path of the lines of magnetic force and having a permeability μb greater than μa. With this constitution, a desired magnetic characteristic is achieved, and the iron loss is sufficiently reduced.

摘要翻译： 功率磁芯具有起始部分和终止部分。 在粉末磁芯中，从起始部分到终止部分形成磁力线。 粉末磁芯包括设置在磁力线的最短磁路上的第一部分，其连接起始部分和终止部分，并具有磁导率μa和与磁体线的最短磁路分开设置的第二部分 力和磁导率mub大于mua。 利用这种构造，实现了所需的磁特性，并且铁损充分降低。

公开(公告)号：US20070241622A1

公开(公告)日：2007-10-18

申请号：US10583517

申请日：2004-12-15

申请人： Haruhisa Toyoda ,  Naoto Igarashi ,  Hitoshi Oyama ,  Yasuhiro Endo ,  Ryoji Mizutani

发明人： Haruhisa Toyoda ,  Naoto Igarashi ,  Hitoshi Oyama ,  Yasuhiro Endo ,  Ryoji Mizutani

IPC分类号： H02K1/02

CPC分类号： H02K1/148 ,  H02K1/02

摘要： A power magnetic core has a start section and a termination section. In the powder magnetic core, lines of magnetic force are formed from the start section to the termination section. The powder magnetic core comprises a first portion disposed on the shortest magnetic path of the lines of magnetic force that connects the start section and the termination section and having a permeability μa and a second portion disposed apart from the shortest magnetic path of the lines of magnetic force and having a permeability μb greater than μa. With this constitution, a desired magnetic characteristic is achieved, and the iron loss is sufficiently reduced.

摘要翻译： 功率磁芯具有起始部分和终止部分。 在粉末磁芯中，从起始部分到终止部分形成磁力线。 粉末磁芯包括设置在磁力线的最短磁路上的第一部分，其连接起始部分和终止部分，并具有磁导率μa和与磁体线的最短磁路分开设置的第二部分 力和磁导率mub大于mua。 利用这种构造，实现了所需的磁特性，并且铁损充分降低。

公开(公告)号：US20100044618A1

公开(公告)日：2010-02-25

申请号：US12518498

申请日：2008-09-03

申请人： Tomoyuki Ishimine ,  Toshihiro Sakamoto ,  Toru Maeda ,  Naoto Igarashi

发明人： Tomoyuki Ishimine ,  Toshihiro Sakamoto ,  Toru Maeda ,  Naoto Igarashi

IPC分类号： H01F1/04 ,  B32B5/16 ,  B05D7/00 ,  B22F1/00 ,  B22F1/02 ,  B05D5/00

CPC分类号： H01F3/02 ,  B22F1/0014 ,  B22F1/0062 ,  B22F1/007 ,  B22F2999/00 ,  C22C38/00 ,  C22C2202/02 ,  H01F1/24 ,  H01F1/26 ,  H01F1/33 ,  H01F41/0246 ,  Y10T428/2982 ,  B22F3/10 ,  B22F2201/02

摘要： A soft magnetic material, a dust core, a method for manufacturing the soft magnetic material, and a method for manufacturing the dust core that can improve DC bias characteristics are provided.A soft magnetic material includes a plurality of metal magnetic particles 10 whose coefficient of variation Cv (σ/μ), which is a ratio of a standard deviation (σ) of a particle size of the metal magnetic particles 10 to an average particle size (μ) thereof, is 0.40 or less and whose circularity Sf is 0.80 or more and 1 or less. The metal magnetic particles 10 preferably have an average particle size of 1 μm or more and 70 μm or less. The soft magnetic material preferably further includes an insulating coated film that surrounds a surface of each of the metal magnetic particles 10.

摘要翻译： 提供软磁性材料，压粉芯，软磁性材料的制造方法以及可提高直流偏压特性的集尘芯的制造方法。 软磁性材料包括多个金属磁性颗粒10，其金属磁性颗粒10的粒径与平均颗粒的标准偏差（＆sgr）的比值变化系数Cv（＆Sgr /μ） 尺寸（μ）为0.40以下，圆形度Sf为0.80以上1以下。 金属磁性粒子10的平均粒径优选为1μm以上且70μm以下。 软磁性材料优选还包括围绕每个金属磁性颗粒10的表面的绝缘涂膜。

公开(公告)号：US08123874B2

公开(公告)日：2012-02-28

申请号：US12518498

申请日：2008-09-03

申请人： Tomoyuki Ishimine ,  Toshihiro Sakamoto ,  Toru Maeda ,  Naoto Igarashi

发明人： Tomoyuki Ishimine ,  Toshihiro Sakamoto ,  Toru Maeda ,  Naoto Igarashi

IPC分类号： H01F1/20

CPC分类号： H01F3/02 ,  B22F1/0014 ,  B22F1/0062 ,  B22F1/007 ,  B22F2999/00 ,  C22C38/00 ,  C22C2202/02 ,  H01F1/24 ,  H01F1/26 ,  H01F1/33 ,  H01F41/0246 ,  Y10T428/2982 ,  B22F3/10 ,  B22F2201/02

摘要： A soft magnetic material, a dust core, a method for manufacturing the soft magnetic material, and a method for manufacturing the dust core that can improve DC bias characteristics are provided.A soft magnetic material includes a plurality of metal magnetic particles 10 whose coefficient of variation Cv (σ/μ), which is a ratio of a standard deviation (σ) of a particle size of the metal magnetic particles 10 to an average particle size (μ) thereof, is 0.40 or less and whose circularity Sf is 0.80 or more and 1 or less. The metal magnetic particles 10 preferably have an average particle size of 1 μm or more and 70 μm or less. The soft magnetic material preferably further includes an insulating coated film that surrounds a surface of each of the metal magnetic particles 10.

摘要翻译： 提供软磁性材料，压粉芯，软磁性材料的制造方法以及可提高直流偏压特性的集尘芯的制造方法。 软磁性材料包括多个金属磁性颗粒10，其金属磁性颗粒10的粒径与平均颗粒的标准偏差（＆sgr）的比值变化系数Cv（＆Sgr /μ） 尺寸（μ）为0.40以下，圆形度Sf为0.80以上1以下。 金属磁性粒子10的平均粒径优选为1μm以上且70μm以下。 软磁性材料优选还包括围绕每个金属磁性颗粒10的表面的绝缘涂膜。