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1. 发明专利

JP2005191281A Rare earth magnet and its production process, and motor 审中-公开
标题翻译：稀土磁铁及其生产工艺及电机
公开(公告)号：JP2005191281A
公开(公告)日：2005-07-14
申请号：JP2003430842
申请日：2003-12-25
申请人： Hitachi Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 株式会社日立製作所
发明人： SATSUU YUUICHI , KOMURO MATAHIRO , WATABE NORIYUKI , TAYU TETSURO , ONO HIDEAKI , KANO MAKOTO , SHIMADA MUNEKATSU , KAWASHITA NOBUO
IPC分类号： B22F1/02 , B22F3/02 , B22F3/14 , C22C33/02 , H01F1/053 , H01F1/06 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To provide a rare earth magnet having a high electric resistance in which lowering of magnet characteristics is minimized, and to provide its production process. SOLUTION: Surface of magnetic powder for rare earth magnet is coated partially, more preferably entirely, with an amorphous or/and crystalline rare earth oxide represented by general formula (I) and impurities contained in the rare earth oxide are oxidized and removed using a peroxide composed of one or a plurality of kinds of perhalogenide, halogenide, halogenite, hypohalogenite, nitrate, organic peroxide and peroxodisulfuric acid before a rare earth magnet is produced by compression molding. The general formula (I): R 2 O 3 (where R is terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thorium (Tm), ytterbium (Yb) or lutetium (Lu)). COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有高电阻的稀土磁体，其中磁体特性的降低最小化，并提供其制造工艺。解决方案：用通式（I）表示的无定形或/或结晶稀土氧化物部分涂覆，更优选完全涂覆稀土磁体的磁粉表面，稀土氧化物中所含的杂质被氧化和去除卤化物，卤化物，次卤酸盐，硝酸盐，有机过氧化物和过氧二硫酸中的一种或多种组成的过氧化物，然后通过压缩成型制备稀土磁体。通式（I）：其中R是铽（Tb），镝（Dy），钬（Ho），铒（Er），钍（Tm），镱（Yb）或镥（Lu））。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005191282A Rare earth magnet and its production process, and motor 有权
标题翻译：稀土磁铁及其生产工艺及电机
公开(公告)号：JP2005191282A
公开(公告)日：2005-07-14
申请号：JP2003430850
申请日：2003-12-25
申请人： Hitachi Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 株式会社日立製作所
发明人： SATSUU YUUICHI , KOMURO MATAHIRO , WATABE NORIYUKI , TAYU TETSURO , ONO HIDEAKI , KANO MAKOTO , SHIMADA MUNEKATSU , KAWASHITA NOBUO
IPC分类号： B22F1/02 , C22C33/02 , C22C38/00 , H01F1/053 , H01F1/06 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a rare earth magnet having a high electric resistance in which lowering of magnet characteristics is minimized, and to provide its production process. SOLUTION: Surface of magnetic powder for rare earth magnet is coated partially, more preferably entirely, with an amorphous rare earth oxide containing carbon represented by general formula (I) and a rare earth magnet is produced by compression molding the magnetic powder. The general formula (I): RO x C y (where R is terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thorium (Tm), ytterbium (Yb) or lutetium (Lu)). COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有高电阻的稀土磁体，其中磁体特性的降低最小化，并提供其制造工艺。解决方案：用含有由通式（I）表示的碳的无定形稀土氧化物部分地，更优选地全部涂覆稀土磁体的磁粉表面，通过压缩成型磁粉来制造稀土磁体。通式（I）：其中R是铽（Tb），镝（Dy），钬（Ho），铒（Er），钍（Tm），镱（Yb）或镥（Lu））。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2005142374A Powder for high-resistance rare earth magnet, manufacturing method thereof, rare earth magnet, manufacturing method thereof, rotor for motor, and motor 有权
标题翻译：用于高电阻稀土磁铁的粉末，其制造方法，稀土磁铁，其制造方法，电动机和电机的转子
公开(公告)号：JP2005142374A
公开(公告)日：2005-06-02
申请号：JP2003377626
申请日：2003-11-07
申请人： Hitachi Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 株式会社日立製作所
发明人： SATSUU YUUICHI , KOMURO MATAHIRO , WATABE NORIYUKI , TAYU TETSURO , ONO HIDEAKI , KANO MAKOTO , SHIMADA MUNEKATSU
IPC分类号： B22F1/02 , B22F3/02 , H01F1/053 , H01F1/06 , H01F1/09 , H02K1/27 , H02K15/03
摘要： PROBLEM TO BE SOLVED: To provide powder for high-resistance rare earth magnet where the deterioration of magnetic character is minimized, and provide a manufacturing method of the powder, a rare earth magnet, a method for manufacturing the rare earth magnet, a rotor for a motor using the rare earth magnet, and the motor using the same. SOLUTION: In the powder for high resistant rare earth magnet, at least a part of the surface of rare earth magnet particles is coated with a compound containing at least one kind of rare earth oxides as terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thorium (Tm), ytterbium (Yb) and lutetium (Lu), and a metal compound containing at least on kind of Al 2 O 3 , SiO 2 , silicon nitride, TiO 2 , ZnO and ZrO 2 . COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供磁性特性的劣化最小化的高电阻稀土磁体的粉末，并且提供粉末，稀土磁体的制造方法，稀土类磁铁的制造方法，用于使用稀土类磁体的电动机的转子，以及使用该转子的电动机。解决方案：在高耐磨稀土磁体粉末中，稀土磁体颗粒表面的至少一部分涂覆有含有至少一种稀土氧化物的化合物，如铽（Tb），镝（Dy ），钬（Ho），铒（Er），钍（Tm），镱（Yb）和镥（Lu）等金属化合物，以及含有至少一种Al 2 O 3 3 ，SiO 2 ，氮化硅，TiO 2 SB 2，ZnO和ZrO SB 2。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2014194958A Sintered magnet 审中-公开
标题翻译：烧结磁铁
公开(公告)号：JP2014194958A
公开(公告)日：2014-10-09
申请号：JP2011136875
申请日：2011-06-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SATSU YUICHI , KOMURO MATAHIRO
IPC分类号： H01F1/08 , H01F1/057
CPC分类号： H01F1/0579 , B22F1/02 , B32B15/011 , C22C28/00 , C22C38/002 , C22C38/005 , C22C38/10 , C22C38/14 , C22C2202/02 , H01F1/0577 , H01F41/0293
摘要： PROBLEM TO BE SOLVED: To provide a sintered magnet that satisfies reduction of rare earth elements that are rare resources and increase of coercive force and a maximum energy product.SOLUTION: An Fe-based powder of high saturation magnetic flux density is mixed with a NdFeB-based magnetic powder. The Fe-based powder has shape anisotropy and a surface of which is coated with a fluoride containing heavy rare earth element by a solution treatment. An average particle diameter of the Fe-based powder is larger than an average particle diameter of the NdFeB-based magnetic powder.
摘要翻译：要解决的问题：提供一种满足稀有资源的稀土元素的还原和矫顽力的增加和最大能量乘积的烧结磁体。解决方案：将高饱和磁通密度的Fe基粉末与NdFeB 的磁粉。 Fe基粉末具有形状各向异性，并通过固溶处理将其表面涂覆有含有重稀土元素的氟化物。 Fe系粉末的平均粒径大于NdFeB系磁性粉末的平均粒径。

5. 发明专利

JP2013211300A Magnetic material and method for producing the same 审中-公开
标题翻译：磁性材料及其制造方法
公开(公告)号：JP2013211300A
公开(公告)日：2013-10-10
申请号：JP2012078807
申请日：2012-03-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NISHI KAZUYA , TANIGAWA SHIGEO , KOMURO MATAHIRO , SATSU YUICHI
IPC分类号： H01F1/055 , B22F1/00 , C22C38/00 , G11B5/633 , G11B5/64 , G11B5/84 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a fluorine-containing magnetic material excellent in magnetic characteristics and thermal stability.SOLUTION: During a process of introducing fluorine into an Sm-Fe based material having a ThZnstructure, a crystal structure thereof is controlled, and an Sm-Fe-F phase constituting the material is configured so as to include a first group having a mixture ratio of F of less than 1% in molar ratio and a second group having a mixture ratio of F of 1% or more and less than 4% in molar ratio, while a volume ratio of the second group with respect to the total magnetic material is 50% or more. The second group is formed more than the first group in a position at a depth in a range of 1 μm to 2.5 μm from the surface of the magnetic material.
摘要翻译：要解决的问题：提供磁特性和热稳定性优异的含氟磁性材料。解决方案：在将氟引入具有ThZn结构的Sm-Fe基材料的过程中，其晶体结构受到控制，Sm 构成材料的-Fe-F相被配置为包括摩尔比小于1％的F的混合比的第一组和F的混合比为1％以上且小于4的第二组摩尔比为％，而第二组相对于总磁性材料的体积比为50％以上。第二组在距离磁性材料表面1μm至2.5μm范围内的深度位置上形成多于第一组。

6. 发明专利

JP2013069738A Sintered magnet 有权
标题翻译：烧结磁铁
公开(公告)号：JP2013069738A
公开(公告)日：2013-04-18
申请号：JP2011205491
申请日：2011-09-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMURO MATAHIRO , SATSU YUICHI , KITAGAWA ISAO , SUGAWARA AKIRA
IPC分类号： H01F1/08 , H01F1/057
CPC分类号： H01F1/0572 , H01F1/0577 , H01F1/0579
摘要： PROBLEM TO BE SOLVED: To provide a sintered magnet reducing the usage amount of rare earth elements of a rare earth magnet and satisfying an increase of maximum energy product and coercive force.SOLUTION: In a sintered magnet in which NdFeB based crystals and FeCo based crystals are present via a grain boundary, Co concentration decreases from a central part to a periphery within the FeCo based crystals, Co concentrations at the central part and the periphery within the FeCo based crystals have a difference by 2 atom% or more, and Co and heavy rare earth elements are unevenly distributed in the vicinity of the grain boundary within the NdFeB based crystals.
摘要翻译：要解决的问题：提供一种减少稀土类磁铁的稀土元素的使用量并满足最大能量乘积和矫顽力的增加的烧结磁体。解决方案：在其中通过晶界存在NdFeB基晶体和FeCo基晶体的烧结磁体中，Co浓度在FeCo基晶体中的中心部分到外围减少，在中心部分和外围的Co浓度在FeCo基晶体内的差异为2原子％以上，Co和重稀土元素不均匀地分布在NdFeB系晶体内的晶界附近。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2010034365A Rotating machine with sintered magnet, and method of manufacturing sintered magnet 审中-公开
标题翻译：具有烧结磁铁的旋转机，以及制造烧结磁体的方法
公开(公告)号：JP2010034365A
公开(公告)日：2010-02-12
申请号：JP2008195950
申请日：2008-07-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMURO MATAHIRO , SATO YUICHI , MORISHITA YOSHII , FUNYU SHIGEAKI , KATAYOSE MITSUO
IPC分类号： H01F1/08 , H01F1/053 , H01F41/02 , H02K15/03
CPC分类号： H02K1/02 , H01F1/0577 , H01F41/0293 , H02K1/2766
摘要： PROBLEM TO BE SOLVED: To prevent the deterioration in magnetic characteristics of a magnetic powder material by heat treatment by reducing the amount of a fluorine compound used. SOLUTION: A rotating machine has: a ferromagnetic material with iron, a rare earth element, and a semimetal element as principal components; a fluorine compound or an acid fluorine compound formed at the inside of the crystal grain of the ferromagnetic material or at one portion of a grain boundary section; at least one of alkali contained by the fluorine compound or the acid fluorine compound, an alkaline earth element, a metal element, and a rare earth element, and carbon or nitrogen; a continuous extension layer, where the fluorine compound or the acid fluorine compound passes through an opposite-side surface through the inside from the surface of the ferromagnetic material; and the sintered magnet in which at least one of the alkali, the alkaline earth element, the metal element, and the rare earth element is deposited one-sidely along the continuous extension layer at a transgranular periphery section along the grain boundary of the ferromagnetic material. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：为了通过减少所使用的氟化合物的量来防止通过热处理的磁性粉末材料的磁特性的劣化。解决方案：旋转机具有：具有铁的铁磁材料，稀土元素和作为主要成分的半金属元素; 形成在铁磁材料的晶粒内部或晶界部分的一部分处的氟化合物或酸性氟化合物; 由氟化合物或酸性氟化合物，碱土金属元素，金属元素和稀土元素所含有的碱中的至少一种以及碳或氮; 氟化合物或酸性氟化合物从铁磁材料的表面穿过内部的相对侧表面的连续延伸层; 以及烧结磁体，其中碱金属，碱土金属元素，金属元素和稀土元素中的至少一种沿着沿着铁磁材料的晶界的跨晶体周边部分沿连续延伸层一侧沉积。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2009033907A Spindle motor 审中-公开
标题翻译：主轴电机
公开(公告)号：JP2009033907A
公开(公告)日：2009-02-12
申请号：JP2007196866
申请日：2007-07-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AMANO HISATO , ENOMOTO YUJI , KOMURO MATAHIRO , SATSUU YUUICHI , TAJIMA FUMIO
IPC分类号： H02K1/22 , H02K1/18 , H02K21/22
CPC分类号： G11B19/2009 , H02K1/146 , H02K21/22 , H02K29/03
摘要： PROBLEM TO BE SOLVED: To provide a spindle motor of high efficiency of which iron loss can be reduced. SOLUTION: The spindle motor includes a stator and a rotor. The rotor has a permanent magnet which is a high-resistance magnet of a specific resistance value being 0.2 mΩcm or higher, being partially insulated with a layer containing a fluorine compound containing at least one of rare earth elements or alkaline earth elements. The stator has a stator core having a yoke and a salient pole, as well as a stator coil. The stator core is made from a stacked steel plate. The salient pole and the yoke of the steel plate are formed by an etching process. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供可以降低铁损的高效率的主轴电机。
解决方案：主轴电机包括定子和转子。转子具有作为电阻值为0.2mΩcm以上的高电阻磁体的永久磁铁，与包含含有至少一种稀土元素或碱土金属的氟化合物的层部分绝缘。定子具有具有轭和凸极的定子芯以及定子线圈。定子铁心由堆叠钢板制成。钢板的凸极和磁轭通过蚀刻工艺形成。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2008109036A High-resistance dust core, its manufacturing method, and electric automobile driving motor using it 有权
标题翻译：高电阻芯，其制造方法和使用电动汽车驱动电机
公开(公告)号：JP2008109036A
公开(公告)日：2008-05-08
申请号：JP2006292632
申请日：2006-10-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IMAGAWA TAKAO , SATSUU YUUICHI , KOMURO MATAHIRO
IPC分类号： H01F27/255 , H01F41/02 , H02K1/02
CPC分类号： H01F41/0246 , B22F1/02 , B22F2003/248 , B22F2998/10 , C22C2202/02 , H01F1/24 , H01F3/08 , H02K1/02 , Y02T10/641 , B22F9/08 , B22F1/0085 , B22F3/02 , B22F3/24
摘要： PROBLEM TO BE SOLVED: To increase a value of resistance in a dust core having a film fluoride; and to make a low loss and high resistance compatible.
SOLUTION: After forming a film composed of a rare earth metal fluoride or alkali earth metal fluoride on a surface of an iron powder or an alloy powder with iron as a main composition, preparatory heat treatment is carried out before compression forming, then, compression forming and straightening heat treatment are performed to manufacture the dust core. The specific resistance is elevated by adding the preparatory heat treatment, thereby making a low iron loss and high resistance compatible. The preparatory heat treatment temperature is preferably the same to a straightening heat treatment temperature or in a range from it to a temperature of 100°C lower than it.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提高具有氟化氟的防尘芯中的电阻值; 并使低损耗和高电阻兼容。解决方案：在铁粉或含铁作为主要成分的合金粉末的表面上形成由稀土金属氟化物或碱土金属氟化物构成的膜后，在压缩成形之前进行预热处理进行压缩成形和矫直热处理以制造压粉芯。通过添加预热处理来提高电阻率，从而使低铁损和高电阻相容。准备热处理温度优选与矫直热处理温度相同，或者在其温度比其低100℃的温度范围内。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2008016670A Magnetic powder, dust core, and manufacturing method thereof 审中-公开
标题翻译：磁粉，粉芯及其制造方法
公开(公告)号：JP2008016670A
公开(公告)日：2008-01-24
申请号：JP2006186860
申请日：2006-07-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IMAGAWA TAKAO , SATSUU YUUICHI , KOMURO MATAHIRO
IPC分类号： H01F1/24 , B22F1/02 , B22F3/00 , B22F3/24
CPC分类号： B22F1/02 , B22F2998/10 , H01F1/24 , H01F41/0246 , Y10T428/12014 , Y10T428/12181 , B22F9/24 , B22F9/04 , B22F9/082
摘要： PROBLEM TO BE SOLVED: To provide magnetic powder which suppresses hysteresis loss caused by compression residual strain in a soft magnetic powder while suppressing eddy current loss across a wide frequency band. SOLUTION: Magnetic powder 10 consists of powder 11 whose main component is iron element having an insulating coat 12 formed on its surface. The powder 11 is globular powder or that whose surface is flattened. The insulating coat 12 is magnetic powder coated by rare earth fluoride, alkali metal fluoride, or alkali earth metal fluoride. COPYRIGHT: (C)2008,JPO&INPIT

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