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    • 8. 发明授权
    • Crystal-oriented ceramics, piezoelectric ceramics using the same, and
methods for producing the same
    • 晶体取向陶瓷,使用其的压电陶瓷及其制造方法
    • US6093338A
    • 2000-07-25
    • US136420
    • 1998-08-20
    • Toshihiko TaniTsuguto TakeuchiYasuyoshi Saito
    • Toshihiko TaniTsuguto TakeuchiYasuyoshi Saito
    • G01L1/16C04B35/00C04B35/46C04B35/462C04B35/495H01L41/187C04B35/475C04B35/491C04B35/622
    • C04B35/495C04B35/462H01L41/1871H01L41/1878H01L41/43
    • A crystal-oriented ceramic has an isotropic or pseudoisotropic perovskite-type-structure of not smaller than 10% in Lotgering orientation degree. The ceramic may contain at least one of Bi, Sr and Ca. A host material, a raw material capable of producing a guest material and an additive having the ability of converting a host material into a guest material are mixed and roll-pressed, and sintered under heat to give the crystal-oriented ceramic as a large-sized and bulky material. This crystal-oriented ceramic has good crystal orientation-dependent characteristics including piezoelectricity, pyroelectricity, ionic conductivity, giant magneto-resistivity effect, etc. This crystal-oriented ceramic can be produced by orienting epitaxially the polycrystals of an isotropic or pseudoisotropic perovskite oxide according to the orientation of the crystal plane or axis of a host material. The ceramic can be applied to an inexpensive and large-sized device. The host material may be a magnetoplumbite-type-structured or Sr.sub.2 Nb.sub.2 O.sub.7 -type-structured material, and may be composed of morphologically-anisotropic grains.
    • 晶体取向陶瓷具有不等于10%的Lotogering取向度的各向同性或拟各向异性的钙钛矿型结构。 陶瓷可能含有Bi,Sr和Ca中的至少一种。 将主体材料,能够生产客体材料的原料和具有将主体材料转化为客体材料的能力的添加剂混合并辊压,并在加热下烧结,得到晶体取向陶瓷作为大尺寸陶瓷, 尺寸和体积大的材料。 这种晶体取向陶瓷具有良好的晶体取向特性,包括压电性,热电性,离子导电性,巨磁阻效应等。该晶体取向陶瓷可以通过外延取向各向同性或拟各向异性的钙钛矿氧化物的多晶根据 主体材料的晶面或轴的取向。 陶瓷可以应用于廉价和大尺寸的装置。 主体材料可以是磁铅石型结构或Sr2Nb2O7型结构材料,并且可以由形态各向异性晶粒组成。
    • 10. 发明申请
    • POLYANION ACTIVE MATERIALS AND METHOD OF FORMING THE SAME
    • POLYANION活性材料及其形成方法
    • US20130029227A1
    • 2013-01-31
    • US13191028
    • 2011-07-26
    • Wei SongMasaki MatsuiToshihiko Tani
    • Wei SongMasaki MatsuiToshihiko Tani
    • H01M4/02H01M4/04
    • C01B33/22H01M4/366H01M4/5825H01M10/0525H01M10/054
    • A method of forming a polyanion active material that includes providing a carbon source, providing a mobile ion source, providing an active metal material, providing a network material, providing a flux material, and mixing the various materials. In one aspect, the mixing step may include grinding or pulverizing materials to a uniform fine mixture. In one aspect, a ball mill may be utilized to mix the components. Following the mixing of the materials, the mixture is heated to a predetermined temperature in a non-oxidizing atmosphere to form a reaction product. In one aspect, the mixture is heated to a temperature above a melting temperature of the flux material. In this manner, the flux material provides a medium in which the various reactants may react to form the desired reaction product. Following the heating of the mixture the reaction product is washed, forming a carbon coated polyanion active material. Also disclosed is a polyanion active material that includes the in situ reaction product of a carbon source, mobile ion source, active metal material, network material, and a flux material wherein the polyanion active material includes a carbon coating formed thereon.
    • 一种形成聚阴离子活性材料的方法,其包括提供碳源,提供可移动离子源,提供活性金属材料,提供网状材料,提供助焊剂材料和混合各种材料。 在一个方面,混合步骤可以包括将材料研磨或粉碎成均匀的细混合物。 在一个方面,可以使用球磨机来混合组分。 在混合材料之后,将混合物在非氧化性气氛中加热至预定温度以形成反应产物。 在一个方面,将混合物加热至高于助熔剂材料的熔融温度的温度。 以这种方式,助焊剂材料提供了各种反应物可以反应形成所需反应产物的介质。 在混合物加热之后,将反应产物洗涤,形成碳涂覆的聚阴离子活性材料。 还公开了一种聚阴离子活性材料,其包括碳源,可移动离子源,活性金属材料,网络材料和助焊剂材料的原位反应产物,其中聚阴离子活性材料包括其上形成的碳涂层。