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1. 发明专利

JPH10289440A MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING METHOD 失效
公开(公告)号：JPH10289440A
公开(公告)日：1998-10-27
申请号：JP4628598
申请日：1998-02-12
申请人： TDK CORP , TOKYO JIKI INSATSU KK
发明人： CHO TSUTOMU , SHIGETA MASAO , KARATSU SHINKO , FUJII MARI , ISHIZAKA TSUTOMU , SAITO KATSUMI , WAKAYAMA KATSUHIKO , MIMURA SHOHEI , ITO MASAHIRO
IPC分类号： C09D5/23 , B22F9/04 , B22F9/08 , C09D7/12 , C22C38/00 , G11B5/02 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/706 , G11B5/73 , G11B5/80 , G11B11/14 , H01F1/047 , H01F10/14
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which can effectively prevent recording information from being altered and a method for recording and reproducing the magnetic recording medium. SOLUTION: This medium has a recording medium formed of crystalline alloy containing Fe and Al. This recording material consists of Fe and Al by >=90 atomic % in total and the atomic ratio Al/(Fe+Al) is 0.30 to 0.45. This recording material varies from an irregular phase to a regular phase by being heated. The saturated magnetism of this recording material is >=45 emu/g before being heated and decreases by >=35 emu/g owing to the heating. This recording material has dark parts observed in a bright field image of a transmission type electron microscope; and the dark parts occupy the recording material at a 15 to 60% area ratio and the maximum width of the dark parts is 10 to 200 nm.

2. 发明专利

JP2014199846A 磁石組立体およびその製造方法审中-公开
标题翻译：磁铁组件及其制造方法
公开(公告)号：JP2014199846A
公开(公告)日：2014-10-23
申请号：JP2013073797
申请日：2013-03-29
申请人： Tdk株式会社 , Tdk Corp , Tdk株式会社
发明人： TSUKAMOTO NAOTO , HAGIWARA ATSUSHI , MITSUTAKE KOJI , MORI SOYA , ISHIZAKA TSUTOMU
IPC分类号： H01F1/08 , B22F3/00 , B22F3/24 , H01F1/057 , H01F7/02 , H01F41/02
摘要：【課題】磁気特性、清浄度および磁石素体とヨークとの密着性に優れ、低背化した磁石組立体を提供すること。【解決手段】磁石素体4と、接着層8を介して磁石素体4と接着されるヨーク6とからなる磁石組立体である。接着層8と接する部分を除く磁石素体4の表面およびヨーク6の表面に清浄度向上用樹脂層10が一体的に形成されている。【選択図】図1
摘要翻译：要解决的问题：提供一种磁体组件，其磁特性，清洁度和磁体元件本体与磁轭之间的粘附性优异，其高度降低。磁体组件包括磁体元件体4和轭附着通过粘合层8与磁体元件体4连接。除了与粘接层8接触的部分和磁轭6的表面之外，在磁体元件体4的表面一体地形成有无干燥性的树脂层10。

3. 发明专利

JP2009295638A Method for manufacturing r-t-b magnet 审中-公开
标题翻译：制造R-T-B磁铁的方法
公开(公告)号：JP2009295638A
公开(公告)日：2009-12-17
申请号：JP2008145068
申请日：2008-06-02
申请人： Tdk Corp , Tdk株式会社
发明人： KOGA TOSHIYUKI , NISHIZAWA KOICHI , FUKAZAWA ARITERU , ISHIZAKA TSUTOMU
IPC分类号： H01F41/02 , B22F3/00 , B22F3/10 , B22F3/24 , C22C38/00 , H01F1/053
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing an R-T-B magnet capable of suppressing fluctuation in a composition of a molded body in baking, improving magnetic characteristics of the obtained R-T-B magnet and preventing a variation in the magnetic characteristics accompanied by the fluctuation in the composition of the R-T-B magnet. SOLUTION: This method for manufacturing an R-T-B magnet comprises: a molding step of forming a molded body of a magnetic material, a temperature rise step of heating the molded body to raising the temperature of the molded body up to a baking temperature T s °C, and a temperature maintaining step of maintaining the temperature of the molded body at T s °C. In the temperature rise step or the temperature maintaining step, the atmosphere is switched from a vacuum atmosphere to an inert gas atmosphere, and switching from the vacuum atmosphere to the inert gas atmosphere is executed before a time point t 1 and after a time point t 2 , where t 1 is a time point when the temperature of the molded body reaches T s °C, and t 2 is a time point when the temperature of the molded body reaches T s °C and 50 minutes have not elapsed while maintaining the temperature at T s °C after t1. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种制造能够抑制烘焙中的成型体的组成变动的RTB磁体的方法，改善所获得的RTB磁体的磁特性，并防止伴随着 RTB磁体的组成波动。解决方案：这种制造RTB磁体的方法包括：形成磁性材料成型体的成型步骤，加热成型体以将成型体的温度升高到烘烤温度T的升温步骤＆lt; SB＆gt;℃，以及将成型体的温度保持在T SB>℃的温度保持步骤。在升温步骤或温度保持步骤中，将气氛从真空气氛切换到惰性气体气氛，并且在时间点t 1 并且在t 2 的时间点之后，其中t 1 是成型体的温度达到T ~~S ℃的时间点，并且t 2 是当成型体的温度达到T ~~S S时的时间点，并且在保持温度为T ~~S时没有经过50分钟， / SB>℃。版权所有（C）2010，JPO＆INPIT~~~~~~

4. 发明专利

JP2007270164A Method for producing rare earth permanent magnet 有权
标题翻译：生产稀土永磁体的方法
公开(公告)号：JP2007270164A
公开(公告)日：2007-10-18
申请号：JP2006093764
申请日：2006-03-30
申请人： Tdk Corp , Tdk株式会社
发明人： ISHIZAKA TSUTOMU , KATO EIJI
IPC分类号： B22F3/00 , B22D11/06 , B22F1/00 , B22F3/02 , B22F3/10 , B22F9/04 , C21D6/00 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a rare earth permanent magnet where an R-T-B based rare earth permanent magnet in which variation in coercive force is suppressed, and which has satisfactory magnetic properties can be stably produced. SOLUTION: Raw material alloy pieces in the same lot formed from the same molten metal are sampled by a prescribed number N of pieces. Then, the ratio between the average crystal grain diameter D1 in one face side in the sampled respective raw material alloy pieces and the average crystal grain diameter D2 in the other face side, D1/D2 is calculated. In the sampled number N of pieces of raw material alloy pieces, the number n of pieces of the raw material alloy pieces in which the ratio D1/D2 satisfies a predetermined standard value or above is calculated, and the abundance ratio of the raw material alloy pieces in which the ratio D1/D2 satisfies the predetermined standard value or above, i.e., including coarse grains, n/N is obtained. Then, only the group of the raw material alloy pieces in the lot in which the abundance ratio n/N satisfies the fixed value or below is fed to a pulverization stage, thus an R-T-B based permanent magnet having high coercive force is produced. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：为了提供一种稀土永磁体的制造方法，其中可以稳定地制造矫顽力的变化被抑制的R-T-B系稀土永磁体。
解决方案：由相同熔融金属形成的同批次中的原材料合金片由规定数量的N片取样。然后，计算取样的各原料合金片中的一个面侧的平均晶粒直径D1与另一面的平均晶粒直径D2之比D1 / D2。在取样数量N的原料合金片中，计算比率D1 / D2满足规定标准值以上的原料合金片数n，原料合金的丰度比比率D1 / D2满足预定标准值以上，即包括粗晶粒，n / N的片。然后，仅将丰度比n / N满足固定值以下的批次中的原料合金块的一组进料到粉碎阶段，由此制造具有高矫顽力的R-T-B系永久磁铁。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2006295140A Rare earth permanent magnet 有权
标题翻译：稀土永磁体
公开(公告)号：JP2006295140A
公开(公告)日：2006-10-26
申请号：JP2006066733
申请日：2006-03-10
申请人： Tdk Corp , Tdk株式会社
发明人： NAKANE MAKOTO , KATO EIJI , ISHIZAKA TSUTOMU , OJI NAOTO
IPC分类号： H01F1/053 , C21D6/00 , C22C33/02 , C22C38/00 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To obtain a rare earth permanent magnet exhibiting excellent magnetic characteristics such as residual magnetic flux and coercive force in which productivity can be enhanced by expanding both the sintering temperature width and the aging temperature width. SOLUTION: The rare earth permanent magnet has a composition of 25-35 wt.% of R (R is one kind or more than one kind selected from rare earth elements), 0-4 wt.% of Co (excluding 0), 0.5-4.5 wt.% of B, 0.02-0.6 wt.% of one kind or more than one kind selected from Cu and Al, 0.03-0.25 wt.% of Zr, 0.05-0.25 wt.% of Ga, 0.03-0.2 wt.% of O, and the reminder of Fe and inevitable impurities. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：为了获得具有优异的磁特性（例如剩余磁通量和矫顽力）的稀土永磁体，通过扩大烧结温度宽度和老化温度宽度，可提高生产率。解决方案：稀土永磁体的组成为R（R是选自稀土元素中的一种或多于一种）的25-35重量％，Co的0-4重量％（不包括0 ），0.5-4.5重量％的B，0.02-0.6重量％的一种或多于一种选自Cu和Al，0.03-0.25重量％的Zr，0.05-0.25重量％的Ga，0.03 -0.2重量％的O，以及Fe和不可避免的杂质的提醒。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2006165008A Manufacturing method of rtb-based sintered magnet 审中-公开
标题翻译：基于RTB的烧结磁体的制造方法
公开(公告)号：JP2006165008A
公开(公告)日：2006-06-22
申请号：JP2004349400
申请日：2004-12-02
申请人： Tdk Corp , Tdk株式会社
发明人： NISHIZAWA KOICHI , ISHIZAKA TSUTOMU , OJI NAOTO
IPC分类号： H01F1/08 , B22D11/06 , B22D23/00 , B22F1/00 , C22C33/02 , C22C38/00 , H01F1/053 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To obtain an RTB-based sintered magnet having magnetic characteristics and particularly high coersive force, by utilizing a main-phase forming alloy manufactured by the centrifugal casting method and a particle-phase forming alloy which has been manufactured by strip casting method. SOLUTION: The manufacturing method of the RTB system sintered magnet includes a process to obtain a molding body with the pressurized molding process while applying a magnetic field to the mixed powder including the alloy powder for main-phase forming including the R 2 T 14 B compound and the alloy powder for particle-phase forming including R in the amount larger than that of the alloy powder for main-phase forming and a process to sinter the molding element. The alloy powder for main-phase forming has been manufactured, by milling the alloy which has been obtained by depositing and solidifying the splashed molten metal 4 at the internal surface of a rotating cylindrical casting die 3, through contact with a rotating body 6 under the condition that the rotating axis X of the rotating body 6 and the rotating axis Z of the cylindrical casting die 3 be allocated in parallel. The alloy powder for particle-phase forming has been manufactured, by milling the alloy which has been obtained through strip casting method. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题为了获得具有磁特性和特别高的共强力的RTB型烧结磁体，通过利用由离心铸造法制造的主相成形合金和已经制造的颗粒相形成合金通过带铸法。解决方案：RTB系烧结磁体的制造方法包括在包含包括R SB的主相成型用合金粉末的混合粉末中施加磁场的情况下，通过加压成型工序获得成型体的工序 > 2 T 14 B化合物和用于颗粒相形成的合金粉末，其包含R的量大于用于主相成型的合金粉末的量，以及烧结成型元件。已经通过在旋转的圆柱形铸模3的内表面上沉积和固化溅出的熔融金属4而获得的合金，通过与旋转体6的内部的旋转体6接触来制造用于主相成型的合金粉末条件是旋转体6的旋转轴线X和圆筒形铸模3的旋转轴线Z被并列分配。已经通过研磨通过带状铸造法获得的合金来制造用于颗粒相成形的合金粉末。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2006128426A Rare earth sintered magnet and its producing process 有权
标题翻译：稀土烧结磁铁及其生产工艺
公开(公告)号：JP2006128426A
公开(公告)日：2006-05-18
申请号：JP2004315196
申请日：2004-10-29
申请人： Tdk Corp , Tdk株式会社
发明人： ENOKIDO YASUSHI , NISHIZAWA KOICHI , ISHIZAKA TSUTOMU
IPC分类号： H01F1/08 , B22F3/24 , C22C38/00 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a rare earth sintered magnet in which pealing strength of a protective film can be ensured for stress impartment. SOLUTION: A rare earth sintered magnet comprises a rare earth sintered magnet body having anisotropy in surface roughness, and a protective film formed on the surface of the rare earth sintered magnet body. When a grinding mark is formed on the surface of the rare earth sintered magnet body along one predetermined direction, it can be said that the rare earth sintered magnet body has anisotropy in surface roughness. Furthermore, it can be said that the rare earth sintered magnet body has anisotropy in surface roughness when following relation is satisfied between the surface roughness Ra1 (arithmetic mean surface roughness) of the rare earth sintered magnet body in the predetermined direction and the surface roughness Ra2 in the direction intersecting the predetermined direction perpendicularly; Ra2≥1.1×Ra1. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够确保保护膜的剥离强度的稀土烧结磁体。解决方案：稀土烧结磁体包括具有表面粗糙度各向异性的稀土烧结磁体和形成在稀土烧结磁体的表面上的保护膜。当沿着一个预定方向在稀土烧结磁体的表面上形成磨痕时，可以说稀土烧结磁体具有各向异性的表面粗糙度。此外，可以说，稀土烧结磁体在预定方向的表面粗糙度Ra1（算术平均表面粗糙度）与表面粗糙度Ra2（算术平均表面粗糙度）之间的关系满足时，表面粗糙度各向异性在与预定方向垂直的方向上; Ra2≥1.1×器Ra1。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2006016644A Method for producing raw powder for rare earth sintered magnet and method for producing rare earth sintered magnet 有权
标题翻译：用于生产稀土烧结磁体的原始粉末的方法和用于生产稀土烧结磁体的方法
公开(公告)号：JP2006016644A
公开(公告)日：2006-01-19
申请号：JP2004193726
申请日：2004-06-30
申请人： Tdk Corp , Tdk株式会社
发明人： BABA FUMITAKA , ENOKIDO YASUSHI , ISHIZAKA TSUTOMU , MASUDA TAKESHI
IPC分类号： B22F1/00 , C22C19/07 , C22C33/02 , C22C38/00 , H01F1/053 , H01F1/08 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To produce raw powder for a rare earth sintered magnet using granules having excellent fluidity and capable of attaining the improvement in the dimensional precision of a compact and the improvement of productivity. SOLUTION: This method for producing raw powder for a rare earth sintered magnet is provided with: a stage where primary alloy grains having a prescribed composition are added with a first organic liquid and a liquid component having saturated vapor pressure higher than that of the first organic liquid to obtain a mixture; and a stage where granules composed of the primary alloy grains are producing using the mixture. As the liquid component, a second organic liquid having a saturated vapor pressure higher than that of the first organic liquid is desirably used, and, it is desirable that, to the primary alloy grains, the first organic liquid is added by ≤6.0 wt% (exclusive of zero), and the second organic liquid is added by ≤15.0 wt.% (exclusive of zero). COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：使用具有优异的流动性的颗粒制造稀土烧结磁体的原料粉末，并且能够获得小型化的尺寸精度的提高和生产率的提高。解决方案：该稀土类烧结磁体用粉末的制造方法具备：将具有规定成分的一次合金粒子添加有第一有机液体和饱和蒸气压高于第一种有机液体得到混合物; 以及使用该混合物制造由一次合金粒子构成的颗粒的阶段。作为液体成分，优选使用饱和蒸气压高于第一有机液体的第二有机液体，对于一次合金粒子，优选添加≤6.0重量％的第一有机液体，（不包括零），第二有机液体加入≤15.0重量％（不包括零）。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2006016643A Method for producing raw powder for rare earth sintered magnet and method for producing rare earth sintered magnet 审中-公开
标题翻译：用于生产稀土烧结磁体的原始粉末的方法和用于生产稀土烧结磁体的方法
公开(公告)号：JP2006016643A
公开(公告)日：2006-01-19
申请号：JP2004193724
申请日：2004-06-30
申请人： Tdk Corp , Tdk株式会社
发明人： BABA FUMITAKA , ENOKIDO YASUSHI , ISHIZAKA TSUTOMU , MASUDA TAKESHI
IPC分类号： B22F1/00 , B22F3/00 , C22C33/02 , C22C38/00 , H01F1/08 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To produce a rare earth sintered magnet using granules having excellent fluidity and capable of attaining the improvement in the dimensional precision of a compact and the improvement of productivity. SOLUTION: This method for producing the rare earth sintered magnet is provided with: a stage where granules obtained by binding primary alloy grains having a prescribed composition with water are charged to a die cavity; a stage where a magnetic field is applied to the granules, and compacting is performed thereto, so as to obtain a compact; and a stage where the compact is sintered. In this case, to the primary alloy grains, water is added, desirably, by 1.5 to 12.0 wt%. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：使用具有优异的流动性并且能够获得压块的尺寸精度的改善并提高生产率的颗粒来制造稀土烧结磁体。解决方案：该稀土类烧结磁铁的制造方法具备：通过将具有规定成分的一次合金粒子与水结合而得到的颗粒装入模腔的阶段; 对颗粒施加磁场的阶段，并对其进行压实，以获得致密; 以及烧结体的阶段。在这种情况下，对于一次合金粒子，优选添加1.5〜12.0重量％的水。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2003041303A Metal member and manufacturing method therefor 有权
标题翻译：金属构件及其制造方法
公开(公告)号：JP2003041303A
公开(公告)日：2003-02-13
申请号：JP2001230236
申请日：2001-07-30
申请人： Tdk Corp , ティーディーケイ株式会社
发明人： YAMAMOTO TOMOMI , NISHIZAWA KOICHI , ISHIZAKA TSUTOMU , MORI TERUO
IPC分类号： B22F3/24 , C22C38/00 , H01F41/02
CPC分类号： H01F41/026
摘要： PROBLEM TO BE SOLVED: To form a corrosion resistant film on a substrate including a rare- earth metal element, without employing third components such as a resin and a coupling agent, and lowering magnetic properties.
SOLUTION: This manufacturing method is characterized by spraying a fluid mixture of a metal powder for forming the film and a high pressure gas, onto the pure surface (a fresh surface) free from oxidation or the like, of a metal. Then, the metal powder uniformly and strongly adheres to the whole surface of the substrate through a mechano-chemical reaction, to form the corrosion resistant film.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：在包括稀土金属元素的基板上形成耐腐蚀膜，而不需要使用诸如树脂和偶联剂的第三成分，并且降低磁特性。解决方案：该制造方法的特征在于，在金属的纯的表面（新鲜的表面）上喷涂用于形成薄膜和高压气体的金属粉末的流体混合物（没有氧化等）。然后，金属粉末通过机械化学反应均匀地强烈地附着在基板的整个表面上，形成耐腐蚀膜。

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