-
公开(公告)号：US5989703A
公开(公告)日：1999-11-23
申请号：US126865
申请日：1998-07-31
申请人： Makoto Inoue , Akiko Watanabe , Taro Sasaki
发明人： Makoto Inoue , Akiko Watanabe , Taro Sasaki
CPC分类号： G11B5/70689 , B82Y30/00 , C01G49/06 , C01G49/08 , G11B5/70642 , G11B5/70652 , G11B5/70657 , C01P2002/60 , C01P2004/64 , C01P2004/84 , C01P2006/12 , C01P2006/22 , Y10S428/90 , Y10T428/257
摘要： Iron oxide magnetic powder having small crystallite size and a small specific surface area, a manufacturing method therefor and a magnetic recording medium having excellent surface characteristics and satisfactory electromagnetic conversion characteristics are provided. The iron oxide magnetic powder contains crystallite having size of 30 nm or less when measured by an X-ray diffraction method and has a specific surface area of 30 m.sup.2 /g or less when measured by a BET method, and a magnetic recording medium using the iron oxide magnetic powder as the magnetic member thereof are provided.
摘要翻译： 提供了具有小晶粒尺寸和小比表面积的氧化铁磁粉，其制造方法和具有优异的表面特性和令人满意的电磁转换特性的磁记录介质。 作为氧化铁磁性粉末，使用X射线衍射法测定尺寸为30nm以下的微晶，BET法测定比表面积为30m 2 / g以下，使用 提供氧化铁磁粉作为其磁性部件。
-
公开(公告)号：US6110581A
公开(公告)日：2000-08-29
申请号：US86989
申请日：1998-05-29
申请人： Taro Sasaki
发明人： Taro Sasaki
CPC分类号： G11B5/70621 , Y10S428/90 , Y10T428/256
摘要： The present invention provides a magnetic recording medium having an excellent dispersion stability of a magnetic paint and excellent magnetic characteristic.The magnetic recording medium includes a non-magnetic support body on which a magnetic layer is formed which contains a ferromagnetic metal powder having a saturation magnetization of 148 Am.sup.2 /kg or above and a binder. The ferromagnetic metal powder mainly consists of a transition metal to which Al, Si, and Sm are added. The Al content is in the range defined by: 24 atomic %.ltoreq.A/(Al+Si+Sm).ltoreq.45 atomic %. The binder contains 20 weight % of vinyl chloride resin having a polar group with respect to the total of binder agents.
摘要翻译： 本发明提供一种具有优异的磁性涂料分散稳定性和优异的磁特性的磁记录介质。 磁记录介质包括非磁性支撑体，其上形成有磁性层，其含有饱和磁化强度为148Am 2 / kg以上的强磁性金属粉末和粘合剂。 铁磁金属粉末主要由添加有Al，Si和Sm的过渡金属组成。 Al含量在以下范围内：24原子％
-
搜索结果
2 条记录 (耗时 0.015 秒)
