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1. 发明授权

US08445105B2 Iron-based soft magnetic powder for dust core, method for production thereof, and dust core 有权
标题翻译：用于防尘芯的铁基软磁性粉末，其制造方法和防尘芯
公开(公告)号：US08445105B2
公开(公告)日：2013-05-21
申请号：US12439861
申请日：2007-08-02
申请人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou , Chio Ishihara , Makoto Iwakiri , Sohei Yamada , Yasukumi Mochimizo
发明人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou , Chio Ishihara , Makoto Iwakiri , Sohei Yamada , Yasukumi Mochimizo
IPC分类号： B32B5/16 , C08K3/38 , C08K3/10 , C08K3/30 , C08K3/32
CPC分类号： H01F3/08 , B22F1/0007 , B22F1/0088 , B22F1/02 , C22C2202/02 , H01F1/24 , H01F1/26 , H01F41/0246 , Y10T428/2995
摘要： An iron-based magnetic powder for dust cores has layers of phosphoric acid-based film and silicone resin film sequentially formed on the surface thereof. The phosphoric acid-based film contains at least one element selected from the group consisting of Co, Na, S, Si, and W. The iron-based powder effectively keeps insulation among iron powder particles, excels in mechanical strength even though the amount of insulating material is reduced due to achieve high-density forming, and exhibits good thermal stability necessary for electrical insulating properties even after high-temperature heat treatment.
摘要翻译：用于防尘芯的铁基磁性粉末具有在其表面上依次形成的磷酸基膜和有机硅树脂膜层。磷酸系膜含有选自Co，Na，S，Si和W中的至少一种元素。铁基粉末有效地保持铁粉末之间的绝缘性，机械强度优异，即使是绝缘材料由于实现高密度成形而降低，并且即使在高温热处理之后也表现出良好的电绝缘性所需的热稳定性。

2. 发明申请

US20100051851A1 IRON-BASED SOFT MAGNETIC POWDER FOR DUST CORE, METHOD FOR PRODUCING THE SAME AND DUST CORE 有权
标题翻译：基于铁的软磁粉，用于制造它的方法和除尘芯
公开(公告)号：US20100051851A1
公开(公告)日：2010-03-04
申请号：US12439861
申请日：2007-08-02
申请人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou , Chio Ishihara , Makoto Iwakiri , Sohei Yamada , Yasukumi Mochimizo
发明人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou , Chio Ishihara , Makoto Iwakiri , Sohei Yamada , Yasukumi Mochimizo
IPC分类号： H01F1/26 , B05D5/00
CPC分类号： H01F3/08 , B22F1/0007 , B22F1/0088 , B22F1/02 , C22C2202/02 , H01F1/24 , H01F1/26 , H01F41/0246 , Y10T428/2995
摘要： Disclosed herein is an iron powder for dust cores which effectively keeps insulation among iron powder particles and excels in mechanical strength even though the amount of insulating material is reduced to achieve high-density forming and which also exhibits good thermal stability necessary for electrical insulating properties even after heat treatment at high temperatures.The iron-based magnetic powder has layers of phosphoric acid-based film and silicone resin film sequentially formed on the surface thereof, said phosphoric acid-based film containing at least one element selected from the group consisting of Co, Na, S, Si, and W.
摘要翻译：这里公开了一种用于防尘芯的铁粉，即使减少绝缘材料的量来实现高密度成形，并且也具有良好的电绝缘性所需的热稳定性经过高温热处理后。铁基磁性粉末在其表面上依次形成有磷酸类膜和有机硅树脂膜，所述磷酸系膜含有选自Co，Na，S，Si，和W.

3. 发明申请

US20090226751A1 POWDER CORE AND IRON-BASE POWDER FOR POWDER CORE 有权
标题翻译：粉末核心和铁粉基础粉末粉末
公开(公告)号：US20090226751A1
公开(公告)日：2009-09-10
申请号：US12440779
申请日：2007-09-11
申请人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou , Chio Ishihara , Makoto Iwakiri , Sohei Yamada , Yasukuni Mochimizo
发明人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou , Chio Ishihara , Makoto Iwakiri , Sohei Yamada , Yasukuni Mochimizo
IPC分类号： B32B15/01 , C22C38/00 , B32B15/02
CPC分类号： H01F1/26 , B22F1/0007 , B22F1/0088 , B22F1/02 , B22F2003/026 , B22F2003/145 , B22F2003/248 , B22F2998/10 , C22C2202/02 , H01F1/24 , H01F3/08 , H01F41/0246 , Y10T428/12028 , Y10T428/12056 , B22F1/0059 , B22F1/0085 , B22F3/02 , B22F3/24
摘要： The present invention relates to an iron-base powder for a powder core, wherein when cross-sections of at least 50 iron-base powders are observed and a crystal grain size distribution containing at least a maximum crystal grain size is determined by measuring a crystal grain size of each iron-base powder, 70% or more of the measured crystal grains are a crystal grain having a crystal grain size of 50 μm or more. According to the iron-base powder of the invention, a coercivity of the powder core can be made small and a hysteresis loss can be reduced.
摘要翻译：本发明涉及一种用于粉末芯的铁基粉末，其中当观察至少50个铁基粉末的横截面时，通过测量晶体尺寸来确定至少具有最大晶粒尺寸的晶粒尺寸分布每个铁基粉末的晶粒尺寸，所测得的晶粒的70％以上是晶粒尺寸为50μm以上的晶粒。根据本发明的铁基粉末，可以使粉末芯的矫顽力变小，并且可以降低滞后损失。

4. 发明授权

US08236087B2 Powder core and iron-base powder for powder core 有权
标题翻译：粉芯和铁粉粉末芯
公开(公告)号：US08236087B2
公开(公告)日：2012-08-07
申请号：US12440779
申请日：2007-09-11
申请人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou , Chio Ishihara , Makoto Iwakiri , Sohei Yamada , Yasukuni Mochimizo
发明人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou , Chio Ishihara , Makoto Iwakiri , Sohei Yamada , Yasukuni Mochimizo
IPC分类号： B22F1/02 , H01F1/06
CPC分类号： H01F1/26 , B22F1/0007 , B22F1/0088 , B22F1/02 , B22F2003/026 , B22F2003/145 , B22F2003/248 , B22F2998/10 , C22C2202/02 , H01F1/24 , H01F3/08 , H01F41/0246 , Y10T428/12028 , Y10T428/12056 , B22F1/0059 , B22F1/0085 , B22F3/02 , B22F3/24
摘要： The present invention relates to an iron-base powder for a powder core, wherein when cross-sections of at least 50 iron-base powders are observed and a crystal grain size distribution containing at least a maximum crystal grain size is determined by measuring a crystal grain size of each iron-base powder, 70% or more of the measured crystal grains are a crystal grain having a crystal grain size of 50 μm or more. According to the iron-base powder of the invention, a coercivity of the powder core can be made small and a hysteresis loss can be reduced.
摘要翻译：本发明涉及一种用于粉末芯的铁基粉末，其中当观察至少50个铁基粉末的横截面时，通过测量晶体尺寸来确定至少具有最大晶粒尺寸的晶粒尺寸分布每个铁基粉末的晶粒尺寸，所测得的晶粒的70％以上是晶粒尺寸为50μm以上的晶粒。根据本发明的铁基粉末，可以使粉末芯的矫顽力变小，并且可以降低滞后损失。

5. 发明申请

US20100188179A1 IRON-BASED SOFT MAGNETIC POWDER FOR DUST CORE AND DUST CORE 有权
标题翻译：基于铁的软磁粉，用于粉尘和粉尘核心
公开(公告)号：US20100188179A1
公开(公告)日：2010-07-29
申请号：US12670750
申请日：2008-07-02
申请人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou
发明人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou
IPC分类号： H01F3/08 , B22F1/02 , B32B15/02
CPC分类号： H01F1/24 , B22F1/02 , H01F3/08 , H01F41/0246 , Y10T428/12007 , Y10T428/12181 , Y10T428/2991
摘要： The invention relates to an iron-based soft magnetic powder for a dust core, wherein a film comprising Fe and Co, a phosphoric acid-based chemical conversion film and a silicone resin film are formed in this order on the surface of an iron-based soft magnetic powder, and to a dust core obtained by molding the iron-based soft magnetic powder for a dust core. The invention also relates to an iron-based soft magnetic powder for a dust core formed by coating the surface of an iron-based soft magnetic powder with an insulating film, wherein the powder has a particle diameter of from 45 μm to 180 μm, the insulating film is composed of two layers in which a lower layer composed of a phosphoric acid-based chemical conversion film and an upper layer composed of a silicone resin film, and each of the films has a thickness of from 100 nm to 280 nm, and to a dust core obtained by molding the iron-based soft magnetic powder for a dust core.
摘要翻译：本发明涉及一种用于防尘芯的铁基软磁性粉末，其中包含Fe和Co，磷酸基化学转化膜和有机硅树脂膜的膜依次形成在铁基软磁性粉末和通过模制用于粉尘芯的铁基软磁性粉末而获得的粉芯。本发明还涉及一种用于通过用绝缘膜涂覆铁基软磁性粉末的表面形成的用于防尘芯的铁基软磁性粉末，其中该粉末具有45μm至180μm的粒径，绝缘膜由两层构成，其中由磷酸基化学转化膜构成的下层和由硅树脂膜构成的上层，并且每个膜具有100nm至280nm的厚度，以及涉及通过模制用于防尘芯的铁基软磁性粉末而获得的防尘芯。

6. 发明授权

US08409707B2 Iron-based soft magnetic powder for dust core and dust core 有权
标题翻译：铁粉软磁粉为防尘芯和防尘芯
公开(公告)号：US08409707B2
公开(公告)日：2013-04-02
申请号：US12670750
申请日：2008-07-02
申请人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou
发明人： Hiroyuki Mitani , Nobuaki Akagi , Hirofumi Houjou
IPC分类号： H01F3/08 , B22F1/02 , B32B15/02
CPC分类号： H01F1/24 , B22F1/02 , H01F3/08 , H01F41/0246 , Y10T428/12007 , Y10T428/12181 , Y10T428/2991
摘要： The invention relates to an iron-based soft magnetic powder for a dust core, wherein a film comprising Fe and Co, a phosphoric acid-based chemical conversion film and a silicone resin film are formed in this order on the surface of an iron-based soft magnetic powder, and to a dust core obtained by molding the iron-based soft magnetic powder for a dust core. The invention also relates to an iron-based soft magnetic powder for a dust core formed by coating the surface of an iron-based soft magnetic powder with an insulating film, wherein the powder has a particle diameter of from 45 μm to 180 μm, the insulating film is composed of two layers in which a lower layer composed of a phosphoric acid-based chemical conversion film and an upper layer composed of a silicone resin film, and each of the films has a thickness of from 100 nm to 280 nm, and to a dust core obtained by molding the iron-based soft magnetic powder for a dust core.
摘要翻译：本发明涉及一种用于防尘芯的铁基软磁性粉末，其中包含Fe和Co，磷酸基化学转化膜和有机硅树脂膜的膜依次形成在铁基软磁性粉末和通过模制用于粉尘芯的铁基软磁性粉末而获得的粉芯。本发明还涉及一种用于通过用绝缘膜涂覆铁基软磁性粉末的表面形成的用于防尘芯的铁基软磁性粉末，其中该粉末具有45μm至180μm的粒径，绝缘膜由两层构成，其中由磷酸基化学转化膜构成的下层和由硅树脂膜构成的上层，并且每个膜具有100nm至280nm的厚度，以及涉及通过模制用于防尘芯的铁基软磁性粉末而获得的防尘芯。

7. 发明申请

US20090242825A1 IRON-BASED SOFT MAGNETIC POWDER FOR DUST CORE, PRODUCTION METHOD THEREOF, AND DUST CORE 审中-公开
标题翻译：基于铁的软磁粉，其生产方法及其核心
公开(公告)号：US20090242825A1
公开(公告)日：2009-10-01
申请号：US12368413
申请日：2009-02-10
申请人： Takeshi OHWAKI , Kasumi Yanagisawa , Hiroyuki Mitani , Satoshi Nishida , Hirofumi Houjou , Nobuaki Akagi
发明人： Takeshi OHWAKI , Kasumi Yanagisawa , Hiroyuki Mitani , Satoshi Nishida , Hirofumi Houjou , Nobuaki Akagi
IPC分类号： H01F1/20 , B05D5/00
CPC分类号： H01F1/26 , B22F1/02 , C22C33/02 , C22C2202/02 , H01F1/24 , H01F41/0246
摘要： An iron-based soft magnetic powder for dust core includes an iron-based soft magnetic matrix powder, and arranged thereon in the following order, a phosphate coating and a silicone resin coating. The phosphate coating contains P, Co, Na, and S in combination with at least one of Al and Cs. This iron powder for dust core has superior mechanical strength, in which effective insulation is achieved between iron powdery particles even when the amount of an insulating material is reduced for realizing high-density molding. The iron powder for dust core is also superior in thermal stability, so that electrical insulation is maintained even after a heat treatment at high temperatures.
摘要翻译：用于防尘芯的铁基软磁性粉末包括铁基软磁性基质粉末，并按以下顺序布置在其上，磷酸盐涂层和有机硅树脂涂层。磷酸盐涂层含有与Al和Cs中的至少一种组合的P，Co，Na和S。这种用于防尘芯的铁粉具有优异的机械强度，即使为了实现高密度成型而减少绝缘材料的量，也可以在铁粉粒子之间实现有效的绝缘。用于防尘芯的铁粉还具有优异的热稳定性，使得即使在高温下进行热处理后仍保持电绝缘。

8. 发明授权

US09275779B2 Iron-based soft magnetic powder for dust core, preparation process thereof, and dust core 有权
标题翻译：铁粉软磁粉，其制备工艺及防尘芯
公开(公告)号：US09275779B2
公开(公告)日：2016-03-01
申请号：US13306228
申请日：2011-11-29
申请人： Hirofumi Hojo , Masamichi Chiba , Hiroyuki Mitani , Nobuaki Akagi , Tomotsuna Kamijo
发明人： Hirofumi Hojo , Masamichi Chiba , Hiroyuki Mitani , Nobuaki Akagi , Tomotsuna Kamijo
IPC分类号： B32B5/16 , C21D11/00 , C21D1/00 , C22C38/00 , H01F1/24 , H01F41/02 , B22F1/00 , B22F1/02 , H01F1/26
CPC分类号： H01F1/24 , B22F1/0085 , B22F1/0088 , B22F1/02 , B22F2998/10 , H01F1/26 , H01F41/0246 , Y10T428/2991 , B22F1/0074 , B22F2003/026 , B22F2003/248
摘要： Provided is an iron-based soft magnetic powder for dust core having a less coercive force, which is obtained by specifying the amount of inclusions in the iron-based powder for dust core, and at the same time, capable of decreasing the coercive force of a dust core produced using the iron-based soft magnetic powder. The iron-based soft magnetic powder for dust core is characterized by that when the cross-section of the iron-based soft magnetic powder particle is observed with a scanning electron microscope, the number of inclusions having an equivalent circle diameter from 0.1 to 3 μm is 1×104 pieces/mm2 or less and the number of inclusions having an equivalent circle diameter exceeding 3 μm is 10 pieces/mm2 or less.
摘要翻译：本发明提供一种矫顽力小的铁基软磁性粉末，其特征在于，通过规定用于防尘芯的铁基粉末中的夹杂物的含量而得到，并且能够降低矫顽力的矫顽力使用铁基软磁性粉末制成的防尘芯。用于防尘芯的铁基软磁性粉末的特征在于，当用扫描电子显微镜观察铁基软磁性粉末颗粒的横截面时，具有0.1至3μm的当量圆直径的夹杂物的数量为1×104个/ mm 2以下，当量圆直径超过3μm的夹杂物的数量为10个/ mm 2以下。

9. 发明申请

US20100212455A1 IRON-BASED SOFT MAGNETIC POWDER FOR DUST CORE, METHOD FOR MANUFACTURING THE SAME, AND DUST CORE 审中-公开
标题翻译：用于磁芯的基于铁的软磁粉，其制造方法和除尘芯
公开(公告)号：US20100212455A1
公开(公告)日：2010-08-26
申请号：US12648684
申请日：2009-12-29
申请人： Takeshi OHWAKI , Hiroyuki Mitani , Hirofumi Hojo , Kasumi Yanagisawa , Nobuaki Akagi
发明人： Takeshi OHWAKI , Hiroyuki Mitani , Hirofumi Hojo , Kasumi Yanagisawa , Nobuaki Akagi
IPC分类号： B22F1/02 , B22F9/00 , H01F1/03 , B05D3/02 , B05D7/00
CPC分类号： H01F1/20 , B22F1/02 , B22F2998/00 , C22C2202/02 , C23C22/07 , C23C22/82 , H01F1/147 , H01F1/24 , H01F1/26 , H01F41/005 , H01F41/0246 , Y10T428/12181 , B22F2301/35 , B22F2302/45
摘要： An iron-based soft magnetic powder for dust core having a high magnetic flux density, maintaining high electric insulation even after annealing, and more excellent in the mechanical strength in which a coating film having a phosphate conversion coating film is formed on the surface thereof and the peak height for the absorption of hydroxyl groups formed at 3700 cm−1 to 2500 cm−1 is 0.04 or more being indicated by absorbance when the coating film is analyzed by infrared diffuse reflectance spectroscopy.
摘要翻译：一种铁磁性软磁粉末，具有高的磁通密度，即使在退火之后也保持高的绝缘性，并且在其表面上形成具有磷酸盐转化膜的涂膜的机械强度更优异，当通过红外漫反射光谱法分析涂膜时，通过吸光度表示在3700cm -1至2500cm -1处形成的羟基的吸收峰值为0.04以上。

10. 发明申请

US20120164453A1 IRON-BASED SOFT MAGNETIC POWDER FOR DUST CORE, PREPARATION PROCESS THEREOF, AND DUST CORE 有权
标题翻译：基于铁粉的软磁粉，其制备方法及其核心
公开(公告)号：US20120164453A1
公开(公告)日：2012-06-28
申请号：US13306228
申请日：2011-11-29
申请人： Hirofumi HOJO , Masamichi Chiba , Hiroyuki Mitani , Nobuaki Akagi , Tomotsuna Kamijo
发明人： Hirofumi HOJO , Masamichi Chiba , Hiroyuki Mitani , Nobuaki Akagi , Tomotsuna Kamijo
IPC分类号： B32B5/16 , C21D11/00 , C21D1/00 , C22C38/00
CPC分类号： H01F1/24 , B22F1/0085 , B22F1/0088 , B22F1/02 , B22F2998/10 , H01F1/26 , H01F41/0246 , Y10T428/2991 , B22F1/0074 , B22F2003/026 , B22F2003/248
摘要： Provided is an iron-based soft magnetic powder for dust core having a less coercive force, which is obtained by specifying the amount of inclusions in the iron-based powder for dust core, and at the same time, capable of decreasing the coercive force of a dust core produced using the iron-based soft magnetic powder.The iron-based soft magnetic powder for dust core is characterized by that when the cross-section of the iron-based soft magnetic powder particle is observed with a scanning electron microscope, the number of inclusions having an equivalent circle diameter from 0.1 to 3 μm is 1×104 pieces/mm2 or less and the number of inclusions having an equivalent circle diameter exceeding 3 μm is 10 pieces/mm2 or less.
摘要翻译：本发明提供一种矫顽力小的铁基软磁性粉末，其特征在于，通过规定用于防尘芯的铁基粉末中的夹杂物的含量而得到，并且能够降低矫顽力的矫顽力使用铁基软磁性粉末制成的防尘芯。用于防尘芯的铁基软磁性粉末的特征在于，当用扫描电子显微镜观察铁基软磁性粉末颗粒的横截面时，具有0.1至3μm的当量圆直径的夹杂物的数量为1×104个/ mm 2以下，当量圆直径超过3μm的夹杂物的数量为10个/ mm 2以下。

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