利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.009 秒)

    Magnetic metal particles containing iron as main component, process for producing the same and magnetic recording medium using the same
    1.
    发明公开
    Magnetic metal particles containing iron as main component, process for producing the same and magnetic recording medium using the same 审中-公开
    具有主要成分铁磁性金属粒子，及其制造方法，和由其磁记录介质

    公开(公告)号：EP1318527A2

    公开(公告)日：2003-06-11

    申请号：EP02258315.7

    申请日：2002-12-03

    申请人： Toda Kogyo Corporation

    发明人： Yamamoto, Akinori ,  Ota, Yasutaka ,  Kurokawa, Haruki ,  Maekawa, Masaaki

    IPC分类号： H01F1/06 ,  G11B5/706

    CPC分类号： H01F1/0551 ,  G11B5/70621 ,  Y10T428/325

    摘要： Magnetic metal particles containing iron as a main component, comprising cobalt in an amount of usually 20 to 50 atm%, calculated as Co, based on whole Fe, aluminum in an amount of usually 3 to 15 atm%, calculated as Al, based on whole Fe and a rare earth element in an amount of usually 3 to 20 atm%, calculated as rare earth element, based on whole Fe, and having an average major axis diameter of usually 0.02 to 0.065 µm, preferably from 0.02 to less than 0.05 µm, a coercive force of usually 159.2 to 222.9 kA/m (2,000 to 2,800 Oe), a soluble Na content of usually not more than 30 ppm, a soluble Ca content of usually not more than 100 ppm, and an oxidation stability Δσs of usually not more than 10%.

    摘要翻译： 基于全铁，铝大气压中在通常为3〜15％的量，以Al计，基于含有铁作为主要成分，在通常为20〜50％的量，计算作为Co的ATM包括钴，磁性金属粒子 批发Fe和在一般的3至20原子％的量的稀土元素，计算为稀土元素，基于整个的Fe，和具有上一般0时02至0065微米的平均长轴直径，优选从0点02分至小于 0.05微米，通常为159.2的矫顽力，以222.9千安/米（2000到2800奥斯特），一般不超过30 ppm的可溶性Na含量，一般不超过100ppm的可溶性Ca含量，和在氧化稳定性 通常不超过10％Δ-Σ秒。