• 主题
高级搜索  >
历史搜索 清空历史
首页> 外国专利> process for the production of a ferromagnetic metallic pulvermaterials and use the pulvermaterials

process for the production of a ferromagnetic metallic pulvermaterials and use the pulvermaterials

机译：铁磁性金属粉体材料的生产方法和使用该粉体材料

页面导航
  • 摘要
  • 著录项
  • 相似文献

摘要

PURPOSE:To make it possible to obtain both a low coercive force and a large saturation magnetic flux density, by employing a magnetic metal powder which contains Ni at a specific ratio and iron as the other principal component. CONSTITUTION:A magnetic metal powder which contains 10-50wt% Ni and iron as the other principal component is employed as a ferromagnetic metal powder for magnetic recording. Such composition makes it possible to obtain a magnetic recording ferromagnetic metal powder having a coercive force of 550-900 Oe and a saturation magnetic flux density of 90-170emu/g. More specifically, before the reducing process, an Ni compound is attached, adsorbed or deposited on the surface of iron oxyhydroxide or iron oxide having an average major axis length of 0.5-5mum and an average minor axis length of 0.02- 0.5mum. Thereafter, this iron oxyhydroxide or iron oxide is subjected to dry reduction by means of a reducing gas to form an alloy of Ni having fine iron as its main body. Thus, it is possible to prevent any deformation of the shape and sintering, and it is possible to obtain a stable ferromagnetic metal powder having a desired coercive force and angular derivative ratio.
机译：用途：通过使用含有特定比例的Ni和铁作为其他主要成分的磁性金属粉末，可以同时获得低矫顽力和大饱和磁通密度。组成：一种磁性金属粉末，其中含有10-50wt％的镍和铁作为其他主要成分，被用作用于磁记录的铁磁金属粉末。这样的组成使得可以获得具有550-900Oe的矫顽力和90-170emu / g的饱和磁通密度的磁记录铁磁性金属粉末。更具体地，在还原过程之前，Ni化合物附着，吸附或沉积在平均长轴长度为0.5-5μm且平均短轴长度为0.02-0.5μm的羟基氧化铁或氧化铁的表面上。此后，用还原气体对该羟基氧化铁或氧化铁进行干还原，以形成以细铁为主体的Ni合金。因此，可以防止形状的任何变形和烧结，并且可以获得具有期望的矫顽力和角导数比的稳定的铁磁金属粉末。

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号