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    • 1. 发明专利
    • Rare-earth magnet and production method therefor
    • 稀土磁铁及其生产方法
    • JP2012190949A
    • 2012-10-04
    • JP2011052376
    • 2011-03-10
    • Toyota Central R&D Labs IncToyota Motor Corpトヨタ自動車株式会社株式会社豊田中央研究所
    • KANEKO YUJITAKADA YUKIOHIRAOKA MOTOKIKANEDA TAKASUKE
    • H01F41/02B22F3/24C22C33/02C23C10/28H01F1/057H01F1/08
    • H01F7/02B22F3/24B22F2003/241B22F2003/248C23C10/28H01F1/0577H01F41/0293
    • PROBLEM TO BE SOLVED: To provide a method of producing a rare-earth magnet in which a diffusion element, e.g. Dy, can be diffused efficiently from the surface to the interior.SOLUTION: The method of producing a rare-earth magnet includes an adhesion step for making a diffusion element, capable of being diffused to the interior, adhere to the surface of a magnet material composed of a molding or a sintered compact of rare-earth alloy particles, and an evaporation step for evaporating at least a part of the diffusion element that is retained on the surface of the magnet material by heating the magnet material in a vacuum. The adhesion step is a vapor deposition step and, preferably, the evaporation step is a heating step for heating only the magnet material in a vacuum following to the vapor deposition step. According to this production method, coersive-force of a rare-earth magnet can be enhanced while limiting the usage of rare Dy, or the like. In other words, a rare-earth magnet having a significantly high coersive-force efficiency can be obtained according to the invention.
    • 要解决的问题:提供一种稀土类磁铁的制造方法,其中扩散元件例如 Dy可以从表面到内部有效地扩散。 解决方案:制造稀土类磁体的方法包括:能够扩散到内部的扩散元件的粘合步骤,附着到由成型体或由稀有金属的烧结体构成的磁体材料的表面 - 地面合金颗粒,以及通过在真空中加热磁体材料来蒸发保留在磁体材料表面上的至少一部分扩散元件的蒸发步骤。 粘合步骤是气相沉积步骤,优选地,蒸发步骤是在气相沉积步骤之后的真空中仅加热磁体材料的加热步骤。 根据该制造方法,可以提高稀土类磁铁的强度,同时限制稀有Dy等的使用。 换句话说,根据本发明,可以获得具有显着高的强制力效率的稀土磁体。 版权所有(C)2013,JPO&INPIT
    • 2. 发明专利
    • Deposition treatment device
    • 沉积物处理装置
    • JP2012167330A
    • 2012-09-06
    • JP2011029447
    • 2011-02-15
    • Toyota Central R&D Labs IncToyota Motor CorpShinko Seiki Co Ltdトヨタ自動車株式会社株式会社豊田中央研究所神港精機株式会社
    • KANEKO YUJITAKAO HISAFUMIHIRAOKA MOTOKIKANEDA TAKASUKEKASHIWAMOTO NOBORUKINO HIROYUKI
    • C23C14/24
    • PROBLEM TO BE SOLVED: To provide a diffusion treatment device which can perform efficient diffusion treatment without wasting a rare deposition raw material.SOLUTION: This deposition treatment device (1) comprises: a treatment chamber (10) for accommodating a material to be treated; a first heating means (13) for heating the material (M) to be treated which is arranged in the treatment chamber; a first atmosphere-adjusting means for adjusting an atmosphere in the treatment chamber; a deposition source chamber (20) which is communicatively arranged at the treatment chamber and can accommodate the deposition source (D); an approximation moving means (21) which can move the deposition source between the treatment chamber and the deposition source chamber, and makes the deposition source approximate the material to be treated; a switching means (30) for switching communication between the treatment chamber and the deposition source chamber according to the movement of the deposition source; a second heating means (22) for heating the deposition source; and a second atmosphere-adjusting means for adjusting an atmosphere in the deposition source chamber. By this, the material to be treated and the deposition source can independently be heated, and can be made to approximate each other at arbitrary timing, and accordingly, a freedom of deposition is extremely raised, thus enabling the efficient deposition treatment or the like.
    • 要解决的问题:提供一种可以在不浪费稀有沉积原料的情况下进行有效的扩散处理的扩散处理装置。 解决方案:该沉积处理装置(1)包括:用于容纳待处理材料的处理室(10) 用于加热布置在处理室中的待处理材料(M)的第一加热装置(13); 用于调节处理室中的气氛的第一气氛调节装置; 沉积源室(20),其连通地布置在处理室处并可容纳沉积源(D); 近似移动装置(21),其能够将沉积源移动到处理室和沉积源室之间,并使沉积源近似于待处理的材料; 切换装置,用于根据沉积源的运动切换处理室和沉积源室之间的连通; 用于加热沉积源的第二加热装置(22); 以及用于调节沉积源室中的气氛的第二气氛调节装置。 由此,待处理材料和沉积源可以独立地加热,并且可以在任意的时刻彼此靠近,因此,沉积的自由度极大地提高,从而能够进行有效的沉积处理等。 版权所有(C)2012,JPO&INPIT
    • 3. 发明专利
    • Rare earth magnet and method of producing the same
    • 稀土磁铁及其制造方法
    • JP2012169464A
    • 2012-09-06
    • JP2011029445
    • 2011-02-15
    • Toyota Central R&D Labs IncToyota Motor Corpトヨタ自動車株式会社株式会社豊田中央研究所
    • KANEKO YUJITAKAO HISAFUMITAKADA YUKIOHIRAOKA MOTOKIKANEDA TAKASUKE
    • H01F41/02H01F1/057H01F1/08
    • H01F1/086B22F3/1007B22F3/24B22F2003/241B22F2203/11B22F2207/01C22C1/00C22C1/02C22C38/002C22C38/005C22C38/10C22C38/16C22C2202/02H01F1/0577H01F41/005H01F41/0266H01F41/0293
    • PROBLEM TO BE SOLVED: To provide a method of producing a rare earth magnet in which Dy, or the like, can be diffused to the inside efficiently in a short time.SOLUTION: The method of producing a rare earth magnet comprises: an arrangement step of arranging a magnet material, i.e. a molding or a sintered compact of powder particles composed of a rare earth magnet alloy, and a diffusion material containing a diffusion element for enhancing the coercive-force in close proximity; and a diffusion step of diffusing the diffusion elements into the magnet material by exposing a heated magnet material to vapor of the diffusion material evaporated from a heated diffusion material. The diffusion step is a step of heating the diffusion material to a diffusion material temperature (Td) different from a magnet material temperature (Tm), i.e. the heating temperature of the magnet material, independently therefrom. Since diffusion processing is performed while setting the magnet material temperature (Tm) and the diffusion material temperature (Td) separately, the diffusion elements can be diffused to the inside of the magnet efficiently even by heating of very short time.
    • 要解决的问题:提供一种可以在短时间内有效地将Dy等稀释到内部的稀土类磁体的制造方法。 解决方案:制造稀土磁体的方法包括:布置磁体材料的布置步骤,即由稀土磁体合金构成的粉末颗粒的模制件或烧结体,以及包含扩散元件的扩散材料 用于增强邻近的矫顽力; 以及扩散步骤,通过将加热的磁体材料暴露于从加热的扩散材料蒸发的扩散材料的蒸气,将扩散元件扩散到磁体材料中。 扩散步骤是将扩散材料加热到与磁体材料温度(Tm)不同的扩散材料温度(Td),即与磁体材料的加热温度独立地加热的步骤。 由于在分别设定磁体材料温度(Tm)和扩散材料温度(Td)的同时进行扩散处理,因此即使通过非常短的时间的加热,扩散元件也能够有效地扩散到磁体的内部。 版权所有(C)2012,JPO&INPIT
    • 4. 发明专利
    • 永久磁石およびその製造方法
    • 永磁体及其制造方法
    • JP2014225537A
    • 2014-12-04
    • JP2013103581
    • 2013-05-15
    • 株式会社豊田中央研究所Toyota Central R&D Labs Inc
    • SATO TAKESHIKANEKO YUJI
    • H01F1/057H01F10/14H01F41/02
    • 【課題】稀少なDyなどを用いることなく、永久磁石(特に希土類磁石)の高温域における保磁力の劣化を抑制できる耐熱性に優れた永久磁石を提供する。【解決手段】本発明の永久磁石は、希土類元素(R)とFeとBの正方晶金属間化合物(R2Fe14B)の結晶粒である磁性結晶粒と、この磁性結晶粒の少なくとも一部の結晶面である特定結晶面を直接被覆する被覆層とを有する。そして本発明に係る被覆層は、磁性結晶粒の特定結晶面における熱膨張係数である特定熱膨張係数が負のときは特定熱膨張係数よりも大きく、特定熱膨張係数が正のときは特定熱膨張係数よりも小さい熱膨張係数を有する金属または金属化合物の結晶体からなる。被覆層は、磁性結晶粒の特定結晶面における格子定数の昇温に伴う変化を規制する。これにより昇温に伴う異方性磁界の劣化、ひいては永久磁石の保磁力の劣化が抑制される。【選択図】図4
    • 要解决的问题:提供一种高耐热永磁体(特别是稀土磁体),其不使用稀有Dy等来抑制永久磁铁的高温范围内的矫顽力的劣化。解决方案:永久性 磁体具有具有稀土元素(R),Fe和B的四方晶系金属间化合物(RFeB)的晶粒的磁性晶粒和直接覆盖作为至少晶体面的特定晶面的覆盖层 一部分磁晶粒。 覆盖层包括具有热膨胀系数的金属或金属化合物的结晶体,如果作为特定结晶面的磁性晶粒的热膨胀系数的特定热膨胀系数为负,则为更多 比特定的热膨胀系数,如果比热膨胀系数为正,则小于特定的热膨胀系数。 覆盖层限制了随着温度升高的特定晶面处磁晶粒的晶格常数的变化。 这抑制了随着温度升高的各向异性磁场的劣化,从而导致永磁体的矫顽力的劣化。
    • 5. 发明专利
    • 焼結磁石用原料合金、希土類焼結磁石およびそれらの製造方法
    • 烧结磁体,稀土磁铁的材料合金及其生产方法
    • JP2015035455A
    • 2015-02-19
    • JP2013164659
    • 2013-08-08
    • 株式会社豊田中央研究所Toyota Central R&D Labs Inc
    • TAKADA YUKIOKANEKO YUJI
    • H01F1/057B22F3/00B22F3/02B22F3/24H01F1/08H01F41/02
    • 【課題】Dyの使用量を抑制しつつ、希土類焼結磁石の磁気特性(特に保磁力)を効率的に向上させることができる焼結磁石用原料合金を提供する。【解決手段】本発明の焼結磁石用原料合金は、第1希土類元素(R)、FeおよびBの正方晶化合物(R2Fe14B)の結晶粒からなる主相とこの結晶粒間に形成された粒界相とで構成された金属組織を有し、焼結されて希土類焼結磁石となる焼結磁石用原料合金であって、さらに、第1希土類元素よりも異方性磁界の大きな正方晶化合物を生成し得る第2希土類元素(R’)が、主相中よりも粒界相で濃化していることを特徴とする。このような焼結磁石用原料合金は、ストリップキャストしたR−Fe−B系磁石合金箔へR’を拡散させることにより得られる。【選択図】図4
    • 要解决的问题:提供一种用于烧结磁体的材料合金,其能够有效地提高稀土烧结磁体的磁特性(特别是矫顽力),同时最小化Dy的用途。解决方案:用于烧结磁体的烧结磁体的材料合金 本发明具有金属结构,其包括主相,其包含第一稀土元素(R)的四方晶格化合物(RFeB),Fe和B的晶粒和在晶粒之间形成的晶界相,并且烧结成作为 稀土烧结磁体。 在用于烧结磁体的材料合金中,能够产生具有大于第一稀土元素的各向异性磁场的四方晶格化合物的第二稀土元素(R')在晶界相中比在主晶体中高 相。 用于烧结磁体的材料合金可以通过将R'扩散到带状R-Fe-B基磁体合金箔中而获得。
    • 6. 发明专利
    • Magnetic material and method for manufacturing the same
    • 磁性材料及其制造方法
    • JP2012164764A
    • 2012-08-30
    • JP2011022975
    • 2011-02-04
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • SATO TAKESHIKANEKO YUJI
    • H01F1/057C21D6/00C22C38/00H01F10/10
    • PROBLEM TO BE SOLVED: To provide a magnetic material capable of developing high coercive force even without using Dy, etc.SOLUTION: The magnetic material comprises a main phase including a RFeB crystal grain (R: rare earth elements), and a grain boundary phase formed between the crystal grains. The crystal grain has a shape with round corners, and a maximum width of 500 nm or less, and the grain boundary phase include a crystal aggregate with nano size of a minimum width of one nm or more. The magnetic material is obtained, for example, by heating an adhesion amorphous material with a diffusion material (for example, R-Cu) adhered to a R-Fe-B amorphous material to form in parallel the main phase including the RFeB crystal grain, and the grain boundary phase formed between the crystal grains. Thereby, the magnetic material with very high coercive force is obtained even without diffusing Dy, etc. being rare elements into the grain boundary.
    • 要解决的问题:提供即使不使用Dy等能够显现高矫顽力的磁性材料。解决方案:磁性材料包括主相,包括R 2 (R:稀土元素)和晶粒之间形成的晶界相。 晶粒具有圆角的形状,最大宽度为500nm以下,晶界相包括纳米尺寸为1nm以上的最小宽度的结晶聚集体。 磁性材料例如通过用附着在R-Fe-B非晶材料上的扩散材料(例如R-Cu)加热附着非晶材料而形成并联包括R SB SB的主相 =“POST”> 2 B晶粒,晶粒间形成晶界。 由此,即使不将Dy等等作为稀有元素扩散到晶界中,也可获得矫顽力非常高的磁性材料。 版权所有(C)2012,JPO&INPIT
    • 7. 发明专利
    • Rare earth sintered magnet and method for manufacturing the same
    • 稀土烧结磁体及其制造方法
    • JP2012043968A
    • 2012-03-01
    • JP2010183659
    • 2010-08-19
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • KANEKO YUJITAKADA YUKIO
    • H01F41/02B22F1/00B22F3/24C22C38/00H01F1/053H01F1/08
    • PROBLEM TO BE SOLVED: To provide a manufacturing method for obtaining a rare earth sintered magnet with Dy and the like efficiently diffused to the inside thereof and with vastly improved coercive force.SOLUTION: The method for manufacturing a rare earth sintered magnet sinters a compact obtained by molding magnet alloy powder containing one or more rare earth elements (R), B, and Fe. The method comprises a diffusion preliminary process where generation energy (E1) of an RFeB type intermetallic compound allows a middle element (Rc) smaller than a main element (Rm) being a rare earth element most contained in the magnet alloy powder and larger than a diffusion element (Rd) being a rare earth element diffused to a sintered body to exist on at least a surface part of the sintered body before diffusion of Rd. Existence of Rc such as Y in the sintered body before diffusion of Rd such as Dy causes deep diffusion of Rd into the inside of the sintered body and then vastly improves coercive force efficiency of the rare earth sintered magnet.
    • 解决问题的方法:提供一种用于获得稀土类烧结磁体的制造方法,该稀土类烧结磁体有效地扩散到其内部并具有极大地提高的矫顽力。 解决方案:稀土烧结磁体的制造方法通过模制含有一种或多种稀土元素(R),B和Fe的磁铁合金粉末来烧结成型体。 该方法包括扩散预处理,其中产生能量(E1)的R 2 Fe 14 B型金属间化合物允许中间 元件(Rc)小于作为磁铁合金粉末中最包含的稀土元素的主要元素(Rm),并且大于扩散到烧结体的稀土元素的扩散元件(Rd),存在于至少一个表面上 在Rd扩散之前的烧结体的一部分。 在诸如Dy之类的Rd的扩散之前在烧结体中存在诸如Y之类的Rc导致Rd的深度扩散到烧结体的内部,并且大大提高了稀土烧结磁体的矫顽力效率。 版权所有(C)2012,JPO&INPIT
    • 8. 发明专利
    • Rare earth magnetic material and method for producing the same
    • 稀土磁性材料及其制造方法
    • JP2011082467A
    • 2011-04-21
    • JP2009235800
    • 2009-10-10
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • KANEKO YUJITAKADA YUKIO
    • H01F41/02B22F1/00B22F3/24C22C33/02C22C38/00H01F1/053H01F1/08
    • B22F1/0088B22F3/24C22C33/0278H01F1/0577H01F41/0246H01F41/0293
    • PROBLEM TO BE SOLVED: To provide a manufacturing method of a rare earth magnet material capable of efficiently dispersing Dy, or the like, into the interior. SOLUTION: The manufacturing method of rear earth magnet material includes a preparation step for preparing a mixed powder in which a neodymium fluoride powder is mixed with a magnet powder comprising one or more kinds of rare earth elements, including neodymium, boron and a remaining part of iron, and a heating step for obtaining a lumpy rare earth magnet material in which the neodymium oxyfluoride is generated and distributed, not only on the surface portion but also throughout, including the inside, by heating the mixed powder so that oxygen present near the particles of magnet powder reacts with fluoride powder. The fluoride powder captures oxygen contained in the mixed powder so that it is fixed as stable NdOF. When Dy is dispersed into the rare earth magnet material, the Dy smoothly advances into the inside without being oxidized with grain boundary, or the like. As a result, without wasting sparse Dy, coercive force of the entire rare earth magnet material is efficiently increased. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供能够将Dy等有效分散到内部的稀土类磁体材料的制造方法。 解决方案:后置土磁体材料的制造方法包括制备混合粉末的制备步骤,其中将氟化钕粉末与包含钕,硼和一种或多种稀土元素的一种或多种稀土元素的磁粉混合 剩余的一部分铁,以及加热步骤,通过加热混合粉末,得到不仅在表面部分,而且包括内部在内的氟氧化钕生成和分布的块状稀土磁体材料 靠近磁粉的颗粒与氟化物粉末反应。 氟化物粉末捕获混合粉末中所含的氧,使其固定为稳定的NdOF。 当Dy分散到稀土磁体材料中时,Dy平滑地进入内部而不被晶界氧化等。 结果,在不浪费Dy的情况下,可以有效地提高整个稀土磁体材料的矫顽力。 版权所有(C)2011,JPO&INPIT