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    • 33. 发明专利
    • 圧粉磁心とその製造方法
    • 粉末致密磁芯及其制造方法
    • JP2014229839A
    • 2014-12-08
    • JP2013110376
    • 2013-05-24
    • 株式会社タムラ製作所Tamura Seisakusho Co Ltd
    • TSUNAKAWA MASAAKIOSHIMA YASUOAKAIWA KOTA
    • H01F1/22B22F3/00B22F3/24C21D6/00C22C45/02H01F1/153H01F27/255H01F41/02
    • 【課題】密度の標準偏差、磁気特性、強度のいずれにおいても優れた性能を発揮する圧粉磁心と、その製造方法を提供する。【解決手段】磁性体粉末と、転移点が前記磁性体粉末の結晶化温度より低いガラス粉末と、結着性樹脂を混合し、常温で加圧成形する。得られた成形体を、前記磁性体粉末の結晶化温度より低い温度で、非還元雰囲気中で熱処理する。ガラス粉末の転移点が、磁性体の結晶化温度と50℃以上差を有する。ガラスの結晶化温度が、磁性体粉末の結晶化温度と50℃以下の差を有する。ガラスの混合量が、磁性体粉末の0.5wt%〜5wt%範囲であって、製造する圧粉磁心の透磁率に合わせてガラスの混合量を決定することが好ましい。ガラス粉末の粒径は0.5μm〜5μmが好ましい。磁性体粉末とガラス粉末を混合するに当たり、潤滑性樹脂を添加しても良い。【選択図】図1
    • 要解决的问题:提供:鉴于密度,磁特性和硬度的任何标准偏差,能够提供优异性能的粉末 - 小型磁芯; 以及制造这种粉末致密磁芯的方法。解决方案:一种制造粉末 - 小型磁芯的方法,包括以下步骤:将磁性材料的粉末,具有低于结晶温度的转变点的玻璃粉末 磁性材料粉末和粘合树脂在一起; 在室温下压制所得混合物; 并且在非还原气氛下,在低于磁性材料粉末的结晶温度的温度下对所得到的压块进行热处理。 玻璃粉末的转变点与磁性材料的结晶温度的差为50℃以上。 玻璃的结晶温度与磁性材料粉末的结晶温度的差为50℃以下。 混合玻璃的量在磁性材料粉末的0.5-5重量%的范围内。 优选根据要制造的粉末 - 小型磁芯的磁导率来确定混合玻璃的量。 此外,玻璃粉末的粒径优选为0.5〜5μm。 在混合磁性材料粉末和玻璃粉末时,可以向其中加入润滑树脂。
    • 35. 发明专利
    • Amorphous alloy powder, dust core, magnetic element and electronic apparatus
    • 非晶合金粉,粉芯,磁性元件和电子设备
    • JP2014167139A
    • 2014-09-11
    • JP2013038586
    • 2013-02-28
    • Seiko Epson Corpセイコーエプソン株式会社
    • OTSUKA ISAMUMAEDA MASARUSATO TOSHIKUNI
    • B22F1/00B22F3/00C22C45/02H01F1/153H01F1/22H01F17/04
    • PROBLEM TO BE SOLVED: To provide an amorphous alloy powder having small magnetostriction, a high-performance dust core produced by using the amorphous alloy powder, a high-performance magnetic element equipped with the dust core and a highly reliable electronic apparatus equipped with the magnetic element.SOLUTION: A choke coil(magnetic element) 10 has a dust core 11 and a conductor 12. The dust core 11 includes an amorphous alloy powder and the amorphous alloy powder is mainly composed of Fe and contains Cr in a ratio of 2 atomic % or more and 3 atomic % or less, Mn in a ratio of 0.02 atomic % or more and 1 atomic % or less, Si in a ratio of 10 atomic % or more and 14 atomic % or less, B in a ratio of 8 atomic % or more and 13 atomic % or less and C in a ratio of 1 atomic % or more and 3 atomic % or less. When the percentage content of Cr is defined as a atomic %, the percentage content of Mn is defined as b atomic % and the percentage content of C is defined as e atomic %, e/(a+b) is 0.3 or more and 0.95 or less.
    • 要解决的问题:为了提供具有小磁致伸缩性的非晶合金粉末,使用非晶合金粉末制造的高性能粉尘芯,配备有防尘芯的高性能磁性元件和配备有磁性的高可靠性电子设备 元件。解决方案:扼流线圈(磁性元件)10具有防尘芯11和导体12.防尘芯11包括非晶态合金粉末,非晶合金粉末主要由Fe构成,并含有比例为2原子的Cr %以上且3原子%以下,Mn为0.02原子%以上且1原子%以下,Si为10原子%以上且14原子%以下,B为8以上 原子%以上且13原子%以下,C以1原子%以上且3原子%以下的比例。 当将Cr的含量定义为原子%时,Mn的百分含量定义为b原子%,C的百分含量定义为e原子%,e /(a + b)为0.3以上0.95 或更少。
    • 36. 发明专利
    • Magnetic sheet
    • 磁性片
    • JP2014127624A
    • 2014-07-07
    • JP2012284444
    • 2012-12-27
    • Nagase Chemtex Corpナガセケムテックス株式会社
    • FURUYOSHI KENTAKOTANI NORIHISANISHIYAMA REIJI
    • H01F1/22H01F41/02
    • PROBLEM TO BE SOLVED: To provide a magnetic sheet which can be used advantageously for reducing the size and profile of an electronic component including a magnetic material member having a high permeability and a high saturation magnetic flux density, and containing a metal particle magnetic filler having a high surface resistance value with a high filling rate.SOLUTION: A magnetic sheet is composed of a magnetic filler added with binding resin, and the filling rate of the magnetic filler is at least 90 wt%. The magnetic filler contains at least one kind of metal particle magnetic filler, out of an amorphous metal and a crystalline metal subjected to insulating surface treatment, and the magnetic sheet has a surface resistance value of 10Ω/sq. or more.
    • 要解决的问题:为了提供一种可有利地用于减小包括具有高磁导率和高饱和磁通密度的磁性材料的电子部件的尺寸和轮廓的磁性片,并且包含具有 具有高填充率的高表面电阻值。解决方案:磁性片由添加有粘结树脂的磁性填料组成,磁性填料的填充率至少为90重量%。 磁性填料含有至少一种金属颗粒磁性填料,由无定形金属和经过绝缘表面处理的结晶金属制成,磁性片的表面电阻值为10&OHgr / sq。 或者更多。
    • 37. 发明专利
    • Cable using flat powder magnetic material as coating and its manufacturing method
    • 使用平粉状磁性材料作为涂料的电缆及其制造方法
    • JP2014112466A
    • 2014-06-19
    • JP2011076967
    • 2011-03-31
    • Alps Electric Co Ltdアルプス電気株式会社
    • MIYAURA MASAOISHIGAKI ISAO
    • H01B7/17H01B11/06H01B13/14H01F1/22
    • H01B13/141H01B7/0208H01B11/1083
    • PROBLEM TO BE SOLVED: To provide a cable having a thin wire diameter capable of being easily coated its outer periphery by a magnetic material and using a flat powder magnetic material as the magnetic material for coating the outer periphery, and to provide its manufacturing method.SOLUTION: A cable 1 is coated by an insulator coated part 20 of which an outer periphery of a core wire 10 is formed by an insulator, a magnetic material part 30 containing a flat magnetic powder 30a is spirally arranged together with the insulator coated part on the outer periphery of the insulator coated part 20, and the flat magnetic powder 30a directs in concentric circular to a center of the core wire 10. Also its manufacturing method is equipped with a first extruder which heats and melts a synthetic resin material 40 and forms the insulator coated part 20 on the outer periphery of the core wire 10, and a second extruder which heats and melts a magnetic resin material 50 and forms the magnetic coated part 30 on the outer periphery of the insulator coated part 20.
    • 要解决的问题:提供一种电缆,其具有能够通过磁性材料容易地涂覆其外周的细线直径,并且使用扁平粉末磁性材料作为用于涂覆外周的磁性材料,并提供其制造方法。 解决方案:电缆1由绝缘体涂覆部分20覆盖,绝缘体涂覆部分20由绝缘体形成芯线10的外周,含有平坦磁性粉末30a的磁性材料部分30与绝缘体涂覆部分一起螺旋地布置 绝缘体涂布部20的外周,平坦磁性粉末30a以同心圆形引导到芯线10的中心。另外,其制造方法配备有第一挤出机,其将合成树脂材料40加热并熔融并形成 在芯线10的外周上的绝缘体涂覆部分20和加热并熔化磁性树脂材料50并形成磁性涂层p的第二挤出机 在绝缘体涂覆部分20的外周上的技术30。
    • 38. 发明专利
    • Composite particle, production method of composite particle, powder magnetic core, magnetic element and portable electronic apparatus
    • 复合颗粒,复合颗粒,粉末磁芯,磁性元件和便携式电子设备的生产方法
    • JP2014103266A
    • 2014-06-05
    • JP2012254453
    • 2012-11-20
    • Seiko Epson Corpセイコーエプソン株式会社
    • OTSUKA ISAMUMAEDA MASARUSATO TOSHIKUNI
    • H01F1/20B22F1/00B22F1/02B22F3/00C22C19/03C22C38/00C22C45/02H01F1/153H01F1/22H01F27/255
    • H01F41/005C23C10/28C23C10/30H01F1/14733H01F1/14766H01F1/24H01F1/33H01F27/255
    • PROBLEM TO BE SOLVED: To provide composite particles wich allows for production of a powder magnetic core having high filling factor and high permeability, and to provide a production method capable of producing the composite particles efficiently, a powder magnetic core produced using the composite particles, a magnetic element including the powder magnetic core, and a portable electronic apparatus including the magnetic element.SOLUTION: A powder magnetic core is obtained by mixing composite particles 5 and a binder, and then molding the mixture. The composite particle 5 has a core particle 3 composed of a soft magnetic metal material, and a plurality of coating particles 40 composed of a soft magnetic metal material and fused to the core particle 3 so as to cover the core particle 3, and a coating layer 4 is formed of a plurality of coating particles 40. When the vickers hardness of the core particle 3 is HV1 and the vickers hardness of the coating layer 4 is HV2, following relationship is satisfied; 100≤HV1-HV2. When one half of the projected area equivalent circle diameter of the core particle 3 is r and the average thickness of the coating layer 4 is t, following relationship is satisfied; 0.05≤t/r≤1.
    • 要解决的问题:为了提供能够生产具有高填充率和高渗透性的粉末磁芯的复合颗粒,并且提供能够有效地制备复合颗粒的制造方法,使用该复合颗粒制造的粉末磁芯, 包括粉末磁芯的磁性元件和包括磁性元件的便携式电子设备。解决方案:通过混合复合颗粒5和粘合剂,然后将混合物成型,获得粉末磁芯。 复合颗粒5具有由软磁性金属材料构成的芯颗粒3和由软磁性金属材料构成的多个涂层颗粒40,并且与芯颗粒3熔合以覆盖芯颗粒3,并且涂覆 层4由多个涂层颗粒40形成。当核心颗粒3的维氏硬度为HV1,涂层4的维氏硬度为HV2时,满足以下关系: 100≤HV1-HV2。 当核心颗粒3的投影面积当量圆直径的一半为r且涂层4的平均厚度为t时,满足以下关系: 0.05≤t/r≤1。