Sinter bonded porous metallic coating
    11.
    发明专利
    Sinter bonded porous metallic coating 有权
    烧结多孔金属涂层

    公开(公告)号:JP2012180588A

    公开(公告)日:2012-09-20

    申请号:JP2012020521

    申请日:2012-02-02

    摘要: PROBLEM TO BE SOLVED: To deposit a porous thin nano powder sintered layer on a substrate.SOLUTION: A composite structure includes a substrate with pores of a first mean pore size and a coating on at least one surface of that substrate. The coating has pores of a second mean pore size. One method to form the porous coating on the substrate includes the steps of: (1) forming a suspension 41 of sinterable particles in a carrier fluid and containing the suspension 41 in a reservoir 43; (2) maintaining the suspension 41 by agitation in the reservoir 43; (3) transferring the suspension 41 to an ultrasonic spray nozzle 51; (4) applying a first coating of the suspension 41 to the substrate; and (5) sintering the sinterable particles to the substrate, thereby forming a coated substrate.

    摘要翻译: 要解决的问题:将多孔薄纳米粉末烧结层沉积在基底上。 解决方案:复合结构包括具有第一平均孔径的孔和在该基底的至少一个表面上的涂层的基底。 涂层具有第二平均孔径的孔。 在基材上形成多孔涂层的一种方法包括以下步骤:(1)在载体流体中形成可烧结颗粒的悬浮液41,并将悬浮液41包含在储存器43中; (2)通过搅拌将贮存器43中的悬浮液41保持在储存器43中; (3)将悬架41转移到超声波喷嘴51; (4)将悬浮液41的第一涂层施加到基材上; 和(5)将可烧结颗粒烧结到基材上,从而形成涂布的基材。 版权所有(C)2012,JPO&INPIT

    Permanent magnet and process for producing permanent magnet
    17.
    发明专利
    Permanent magnet and process for producing permanent magnet 有权
    永久磁铁和生产永磁体的方法

    公开(公告)号:JP2009259955A

    公开(公告)日:2009-11-05

    申请号:JP2008105759

    申请日:2008-04-15

    摘要: PROBLEM TO BE SOLVED: To provide a permanent magnet whose magnetic performance can be improved by setting the crystal grain size of a sintered compact to not more than 3 μm by suppressing the grain growth of a magnet particle in sintering, and to provide a process for producing the permanent magnet. SOLUTION: A raw magnet material comprising 27-30% of Nd, 60-70% of Fe, and 1-2% of B is wet-pulverized into a fine powder of 3 μm or below; and an organic compound including a high-melting metallic element with an included metal constituent reaching 0.01-8 wt.%, or a precursor of high-melting ceramic with an included ceramic constituent reaching 0.01-8 wt.% or a dispersing agent is added to magnet powder during wet-pulverizing, thus dispersing the organic compound including a high-melting metallic element or the precursor of high-melting ceramic in a solvent along with the raw magnet material. Then, a resin binder is added into the solvent, and the magnet powder and the resin binder are kneaded to generate slurry 41. Then, by sintering a green sheet 42 with the generated slurry formed in a sheet shape, a permanent magnet 1 is produced. COPYRIGHT: (C)2010,JPO&INPIT

    摘要翻译: 要解决的问题:为了提供通过抑制烧结中的磁体颗粒的晶粒生长,通过将烧结体的晶粒尺寸设定为不大于3μm来提高其磁性能的永磁体,并且提供 一种永磁体的制造方法。 解决方案:将包含27-30%的Nd,60-70%的Fe和1-2%的B的原始磁体材料湿式粉碎成3μm或更小的细粉末; 包括含有金属成分的高熔点金属元素达到0.01-8重量%的有机化合物,或包含陶瓷成分达到0.01-8重量%的高熔点陶瓷的前体或分散剂 在湿式粉碎过程中对磁体粉末进行粉碎,由此将包含高熔点金属元素的有机化合物或高熔点陶瓷的前体与原料磁体一起分散在溶剂中。 然后,将树脂粘合剂添加到溶剂中,并将该磁体粉末和树脂粘合剂捏合以产生浆料41.然后,通过用形成为片状的所产生的浆料烧结生片42,产生永磁体1 。 版权所有(C)2010,JPO&INPIT

    Ferromagnetic metal particle powder and method for manufacturing the same, and magnetic recording medium
    18.
    发明专利
    Ferromagnetic metal particle powder and method for manufacturing the same, and magnetic recording medium 有权
    非金属金属颗粒粉末及其制造方法和磁记录介质

    公开(公告)号:JP2009228136A

    公开(公告)日:2009-10-08

    申请号:JP2009046803

    申请日:2009-02-27

    摘要: PROBLEM TO BE SOLVED: To provide a ferromagnetic metal particle powder improved in dispersibility without impairing flowability, and a method for manufacturing the same, and a magnetic recording medium using the ferromagnetic metal particle powder and having satisfactory surface smoothness. SOLUTION: A liquid-containing material containing goethite particle powder is frozen and is then subjected to vacuum drying, and heating treatment is performed to obtain a hematite particle powder. The hematite particle powder is subjected to heating reduction at 300 to 600°C, and since bulk is high and the particles are firmly condensed to each other, the particles are liable to be loosened by slight dispersion force and torque is apt to be exerted onto the particles in kneading during production of a magnetic paint and consequently the ferromagnetic metal particle powder which is high in the rate of filling into the magnetic recording layer and with which high surface smoothness can be obtained, can be provided. COPYRIGHT: (C)2010,JPO&INPIT

    摘要翻译: 要解决的问题:提供一种改善分散性而不损害流动性的铁磁性金属颗粒粉末及其制造方法,以及使用该强磁性金属颗粒粉末并具有令人满意的表面平滑度的磁记录介质。 解决方案:将含有针铁矿颗粒粉末的含液材料冷冻,然后进行真空干燥,并进行加热处理以获得赤铁矿颗粒粉末。 赤铁矿颗粒粉末在300〜600℃下进行加热还原,由于体积高,粒子彼此牢固地凝聚,所以微粒容易被轻微的分散力松动,并且扭矩易于施加在 可以提供在制造磁性涂料期间捏合的颗粒,并且因此可以获得填充到磁记录层中并且可以获得高表面光滑度的铁磁性金属颗粒粉末。 版权所有(C)2010,JPO&INPIT