利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

16 条记录 (耗时 0.01 秒)

    Glass-encapsulated magnetic materials and methods for making them
    2.
    发明授权
    Glass-encapsulated magnetic materials and methods for making them 失效
    玻璃封装的磁性材料及其制造方法

    公开(公告)号：US4360441A

    公开(公告)日：1982-11-23

    申请号：US277090

    申请日：1981-06-25

    申请人： Nicholas F. Borrelli ,  David L. Morse ,  Jan W. H. Schreurs

    发明人： Nicholas F. Borrelli ,  David L. Morse ,  Jan W. H. Schreurs

    IPC分类号： C03C10/00 ,  C03C23/00 ,  C03C3/30 ,  C04B35/26 ,  C04B35/28 ,  C04B35/32

    CPC分类号： C03C23/0095 ,  C03C10/0081

    摘要： Magnetic materials exhibiting ferrimagnetic and/or superparamagnetic behavior, produced by impregnating porous glasses with iron and, optionally, manganese, cobalt and nickel compounds, reacting the compounds with the porous glass to form bound complexes, heating the glass to expel unreacted organometallics, and further heating to convert the bound complexes to ferrimagnetic and/or superparamagnetic oxide crystallites, are described. Ferrimagnetic iron oxide crystallites exhibiting coercivities above 10,000 Oe can be made.

    摘要翻译： 通过用铁和任选的锰，钴和镍化合物浸渍多孔玻璃产生的表现出亚铁磁性和/或超顺磁性的磁性材料，使化合物与多孔玻璃反应形成结合的络合物，加热玻璃以排出未反应的有机金属， 描述了加热以将结合的络合物转化为亚铁磁性和/或超顺磁性氧化物微晶。 可以制造表现出高于10,000Oe的矫顽力的铁磁性氧化铁微晶。

    Process for the preparation of permanently magnetizable mixed oxides containing iron
    7.
    发明授权
    Process for the preparation of permanently magnetizable mixed oxides containing iron 失效
    制备含铁的永磁可混合氧化物的方法

    公开(公告)号：US3704226A

    公开(公告)日：1972-11-28

    申请号：US3704226D

    申请日：1970-12-21

    申请人： STAMICARBON

    发明人： GEUS JOHN W

    IPC分类号： C01G49/02 ,  C04B35/26 ,  G11B5/706 ,  H01F1/34 ,  C04B35/28 ,  C04B35/32 ,  C04B35/36

    CPC分类号： H01F1/344 ,  C01G49/02 ,  C01P2006/80 ,  C04B35/26 ,  G11B5/70678

    摘要： A PROCESS FOR THE PREPARATION OF PEMANENTLY MAGNETIZABLE IRON CONTAINING MIXED OXIDES BY PRECPITATION FROM AN AQUEOUS SOLUTION IS DISCLOSED. AN AQUEOUS SOLUTION OF A FERROUS SALT CONTAINING ALSO ONE OR MORE SALTS OF OTHER METALS, BUT NO OXIDIZING AGENTS, IS INTENSIVELY STIRRED, WHEREBY A PRECIPITATE IS GRADUALLY FORMNED AT ELEVATED TEMPERATURE BY HYDROLIZING UREA, LKIEWISE PRESENT IN THE SOLUTION, TO AMMONIUM CARBAMATE, OR AMMONIUM CARBONATE, AND THE PRECIPITATE SO FORMED IS SUBSEQUENTLY SEPARATED FROM THE LIQUID, WASHED, DRIED AND IF NECESSARY, HEAT-TREATED IN CONTACT WITH AIR. PREFERABLY THE PRECIPITATION IS CARRIED OUT IN AN INERT ATMOSPHERE. IF THE PRECIPITATE IS USED FOR THE PREPARATION OF A PERMANENTLY MAGNETIZABLE MIXED OXIDE TO BE USED ON TAPES OR SHEETS, THE MATERIAL IS SUBJECTED TO A TERMAL TREATMENT BELOW 500*C., AND FOR THE PREPARATION OF MOULDED OBJECTS, THE COMPRESSED MATERIAL IS SUBJECTED TO A THERMAL TREATMENT AT TEMPERATURES OF 1000*C. OR OVER.

    Method of making a densified silicon nitride/oxynitride composite
    9.
    发明授权
    Method of making a densified silicon nitride/oxynitride composite 失效
    制造致密氮化硅/氮氧化物复合材料的方法

    公开(公告)号：US4496503A

    公开(公告)日：1985-01-29

    申请号：US527911

    申请日：1983-07-19

    申请人： Andre Ezis ,  Elaine C. Beckwith ,  Howard D. Blair

    发明人： Andre Ezis ,  Elaine C. Beckwith ,  Howard D. Blair

    IPC分类号： C04B35/58 ,  C04B35/584 ,  C04B35/593 ,  C04B35/32

    CPC分类号： C04B35/584 ,  C04B35/593

    摘要： A method of making a densified silicon nitride/oxynitride composite is disclosed. The method comprises: (a) shaping a substantially homogeneous powder mixture of silicon nitride, 6-18% yttrium silicon oxynitride of the Y.sub.10 Si.sub.6 O.sub.24 N.sub.2 phase in an amount to form a viscous solution with at least a portion of the silicon nitride, and (b) densifying the body by heat fusion, with or without the use of mechanical pressure, to a density and a dimension required for the final product.

    摘要翻译： PCT No.PCT / US83 / 01114 Sec。 371日期1983年7月19日 102（e）1983年7月19日PCT PCT日期为1983年7月19日。公开了制造致密氮化硅/氮氧化物复合材料的方法。 该方法包括：（a）将Y10Si6O24N2相的氮化硅，6-18％钇氧氮化硅的基本均匀的粉末混合物成形为与氮化硅的至少一部分形成粘性溶液的量，和（b） 通过使用或不使用机械压力通过热熔融将机体致密化成最终产品所需的密度和尺寸。