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17 条记录 (耗时 0.031 秒)

    Compositions of particulate magnetic oxides with a defect spinel structure, preparation thereof and application thereof
    4.
    发明授权
    Compositions of particulate magnetic oxides with a defect spinel structure, preparation thereof and application thereof 失效
    具有缺陷尖晶石结构的颗粒状磁性氧化物的组合物，其制备方法及其应用

    公开(公告)号：US4808327A

    公开(公告)日：1989-02-28

    申请号：US62609

    申请日：1987-06-01

    申请人： Abel Rousset ,  Christiane B. Salvaing ,  Paul Mollard ,  Michel Gougeon ,  Philippe Tailhades

    发明人： Abel Rousset ,  Christiane B. Salvaing ,  Paul Mollard ,  Michel Gougeon ,  Philippe Tailhades

    IPC分类号： C01B13/18 ,  C01G49/00 ,  G11B5/706 ,  H01F1/11 ,  C04B35/26

    CPC分类号： G11B5/70642 ,  C01B13/185 ,  C01G49/009 ,  C01P2002/32 ,  C01P2006/42

    摘要： Particulate magnetic oxide compositions based on iron oxide (III) and oxide of at least one bivalent metal selected among cobalt, iron, copper, zinc, magnesium, nickel, manganese and cadmium, characterized in that said compositions contain additionally in the form of an oxide from 0.2 to 5% by weight calculated on the total weight at least one additive or substituent selected among alkali metals, alkaline-earth metals, boron, the elements of columns 3, 4 and 5 of the periodical classification of elements having a molecular mass higher than 26, the transition metals 3d and 4d other than those already mentioned, and the rare earths, with the proviso that when an alkali metal or tin is present, at least another additive or substituent is also present, and in that said compositions have a structure of the lanucar spinel type; the preparation and application thereof are also disclosed.

    摘要翻译： PCT No.PCT / FR86 / 00337 Sec。 371日期：1987年6月1日 102（e）日期1987年6月1日PCT提交1986年9月30日PCT公布。 公开号WO87 / 02173 日本1987年4月9日。基于氧化铁（III）和选自钴，铁，铜，锌，镁，镍，锰和镉中的至少一种二价金属的氧化物的颗粒状磁性氧化物组合物，其特征在于所述组合物含有 另外以0.2至5重量％的氧化物的形式，其总重量计算为选自碱金属，碱土金属，硼中的至少一种添加剂或取代基，定期分类的第3,4和5列的元素 的分子量高于26的元素，过渡金属3d和4d以外的已知的稀土元素和稀土元素，条件是当存在碱金属或锡时，还存在至少另一种添加剂或取代基， 并且所述组合物具有兰卡尔尖晶石型结构; 还公开了其制备和应用。

    Composite material for magnetooptic recording its preparation and its use
    7.
    发明授权
    Composite material for magnetooptic recording its preparation and its use 失效
    复合材料用于磁光记录其制备及其用途

    公开(公告)号：US6017645A

    公开(公告)日：2000-01-25

    申请号：US030283

    申请日：1998-02-25

    申请人： Philippe Tailhades ,  Jean-Pierre Bonino ,  Isabelle Pasquet ,  Lionel Presmanes ,  Laurence Bouet ,  Abel Rousset ,  Patrick Langlade

    发明人： Philippe Tailhades ,  Jean-Pierre Bonino ,  Isabelle Pasquet ,  Lionel Presmanes ,  Laurence Bouet ,  Abel Rousset ,  Patrick Langlade

    IPC分类号： G11B11/105 ,  G11B5/66

    CPC分类号： G11B11/10586 ,  Y10S428/90

    摘要： Composite material for magnetooptic recording, comprising a thin layer deposited on a non-magnetic solid substrate. The said thin layer is a polycrystalline layer consisting of microcrystals having a structure of a vacant-site spinel ferrite, based on iron, cobalt and transition metals. By virtue of a particular process for producing the thin layers, enabling especially the size of the crystallites to be increased, it is possible to optimize the magnetic and magnetooptic properties and to obtain thin layers having, for example, a remanent Faraday rotation and a coercive field which are greater, respectively, than 1 degree per micron for the Faraday rotation and 1000 Oe for the coercive field.

    摘要翻译： 用于磁光记录的复合材料，包括沉积在非磁性固体基底上的薄层。 所述薄层是由具有基于铁，钴和过渡金属的空位尖晶石铁氧体的结构的微晶构成的多晶层。 通过制造薄层的特定方法，特别能够提高微晶的尺寸，可以优化磁性和磁光性质，并获得具有例如残留的法拉第旋转和矫顽力的薄层 场分别对于法拉第旋转分别大于1微米/微米，对于矫顽场分别为1000奥斯特。

    Method of preparing metal powders, metal powders prepared in this way and compacts that include these powders
    9.
    发明授权
    Method of preparing metal powders, metal powders prepared in this way and compacts that include these powders 有权
    制备金属粉末的方法，以这种方式制备的金属粉末和包括这些粉末的压块

    公开(公告)号：US06464750B1

    公开(公告)日：2002-10-15

    申请号：US09592440

    申请日：2000-06-12

    申请人： Philippe Tailhades ,  Valérie Carles ,  Abel Rousset

    发明人： Philippe Tailhades ,  Valérie Carles ,  Abel Rousset

    IPC分类号： C22C104

    CPC分类号： B82Y25/00 ,  B22F1/004 ,  B22F9/22 ,  C06B33/00 ,  C22B5/12 ,  C22B23/00 ,  C22B59/00 ,  H01F1/065 ,  H01F1/20 ,  H01M4/803 ,  H01M6/36

    摘要： The invention relates to a method of preparing metal powder comprising: preparing a simple or mixed oxalate of one or more metals formed of particles with needle-like morphology having a mean acicularity ratio (length/diameter) of from 4 to 20, and a length of from 5 to 10 microns and converting said oxalate to metal or metal alloy powder by reducing treatment with gaseous hydrogen. The conversion of said oxalate can be carried out by decomposing said oxalate, in air, to an oxide and then reducing said oxide to metal or metal alloy. The metal is chosen from among the rare earth metals and the transition metals, preferably from among iron, cobalt, and nickel. The method is particularly suitable for making iron powder metal having a spongy and filament-like microstructure which makes it suitable for use in heating composition for thermo-piles. In addition, the invention relates to metal compacts unstoved or annealed which are obtained by applying compaction pressure to the powders according to the invention.

    摘要翻译： 本发明涉及一种制备金属粉末的方法，包括：制备一种或多种由具有4至20的平均针刺比（长/直径）的针状形态的颗粒形成的一种或多种金属的简单或混合草酸盐， 为5至10微米，并通过减少用气态氢处理将所述草酸盐转化为金属或金属合金粉末。 所述草酸盐的转化可以通过将所述草酸盐在空气中分解成氧化物，然后将所述氧化物还原成金属或金属合金来进行。 金属选自稀土金属和过渡金属，优选从铁，钴和镍中选出。 该方法特别适用于制造具有海绵状和丝状微细结构的铁粉金属，使其适用于热桩用加热组合物。 此外，本发明涉及通过对根据本发明的粉末施加压实压力而获得的未加工或退火的金属压块。