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    • 2. 发明申请
    • POWDER FOR MAGNET
    • 磁粉粉
    • US20120237769A1
    • 2012-09-20
    • US13496069
    • 2011-04-13
    • Toru MaedaAsako Watanabe
    • Toru MaedaAsako Watanabe
    • H01F1/01B22F3/24B22F3/02C23C8/08B22F1/00
    • H01F1/0551B22F3/02B22F3/101B22F3/24B22F9/023C22C33/0278H01F1/0573H01F1/0578H01F41/0273Y10T428/2982
    • The present invention provides a powder for a magnet which can form a rare earth magnet having excellent magnetic characteristics and which has excellent moldability, a method for producing the powder for a magnet, a powder compact, and a rare earth-iron-boron-based alloy material.Magnetic particles constituting a powder for a magnet each include a structure in which a particle of a phase 3 of a hydrogen compound of a rare earth element is dispersed in a phase 2 of an iron-containing material. Since the phase 2 of the iron-containing material is uniformly present in each of the magnetic particles 1, the powder has excellent moldability and easily increases the density of a powder compact 4. The powder for a magnet can be produced by heat-treating a powder of a rare earth-iron-boron-based alloy (R—Fe—B-based alloy) in a hydrogen atmosphere at a temperature equal to or higher than the disproportionation temperature of the R—Fe—B-based alloy to separate the powder into the rare earth element and the iron-containing material and to produce the hydrogen compound of the rare earth element. The powder compact 4 is produced by compacting the powder for a magnet. The powder compact 4 is heat-treated in a vacuum to produce a R—Fe—B-based alloy material 5, and the R—Fe—B-based alloy 5 is magnetized to produce a R—Fe—B-based alloy magnet 6.
    • 本发明提供一种可形成磁特性优异且成型性优异的稀土类磁体的粉末,磁铁用粉末的制造方法,粉末成形体和稀土 - 铁 - 硼系的粉末 合金材料。 构成磁体用粉末的磁性粒子各自包含将稀土元素的氢化合物的相3的粒子分散在含铁材料的相2中的结构。 由于含铁材料的相2均匀地存在于每个磁性颗粒1中,所以粉末具有优异的成型性,并且容易增加粉末压块4的密度。用于磁体的粉末可以通过热处理 在等于或高于R-Fe-B基合金的歧化温度的温度下,在氢气氛中稀土 - 铁 - 硼基合金粉末(R-Fe-B基合金),以分离 粉末进入稀土元素和含铁材料,并产生稀土元素的氢化合物。 粉末压实体4是通过压实用于磁体的粉末来制造的。 粉末压块4在真空中热处理以产生R-Fe-B基合金材料5,并且将R-Fe-B基合金5磁化以产生R-Fe-B基合金磁体 6。
    • 4. 发明申请
    • SOFT MAGNETIC MATERIAL, DUST CORE, METHOD FOR PRODUCING SOFT MAGNETIC MATERIAL, AND METHOD FOR PRODUCING DUST CORE
    • 软磁材料,软芯,生产软磁材料的方法,以及生产软磁芯的方法
    • US20100193726A1
    • 2010-08-05
    • US12665489
    • 2008-08-26
    • Toru MaedaKazushi Kusawake
    • Toru MaedaKazushi Kusawake
    • H01F1/26B05D5/00B29C71/02H01F1/24
    • H01F41/0246B22F1/0062C01P2006/42C09C1/62C22C33/02C22C2202/02H01F1/26
    • A soft magnetic material includes a plurality of composite magnetic particles (30) each including an iron-based particle (10) containing iron and an insulating coating film (20) surrounding a surface of the iron-based particle (10). The insulating coating film contains an organic group derived from an organic acid having at least one substance selected from the group consisting of titanium, aluminum, silicon, calcium, magnesium, vanadium, chromium, strontium, and zirconium. The at least one substance in the insulating coating film (20) is bonded to iron in the iron-based particles (10) through the organic group derived from the organic acid in the insulating coating film (20). Furthermore, a method for producing a soft magnetic material includes the steps of preparing the iron-based particles (10) containing iron and forming the insulating coating film (20) surrounding a surface of each of the iron-based particles (10). In the step of forming the insulating coating film, the organic acid containing the substance is brought into contact with the surfaces of the iron-based particles (10).
    • 软磁性材料包括多个复合磁性颗粒(30),每个复合磁性颗粒包括含有铁的铁基颗粒(10)和围绕铁基颗粒(10)表面的绝缘涂膜(20)。 绝缘涂膜含有衍生自具有选自钛,铝,硅,钙,镁,钒,铬,锶和锆中的至少一种物质的有机酸的有机基团。 绝缘涂膜(20)中的至少一种物质通过绝缘涂膜(20)中由有机酸衍生的有机基团与铁基颗粒(10)中的铁键合。 此外,制造软磁性体的方法包括以下步骤:制备含有铁的铁基颗粒(10),并形成围绕每个铁基颗粒(10)的表面的绝缘涂膜(20)。 在形成绝缘涂膜的步骤中,使含有物质的有机酸与铁基颗粒(10)的表面接触。