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21 条记录 (耗时 0.025 秒)

    Method of making a multilayer piezoelectric composite
    1.
    发明授权
    Method of making a multilayer piezoelectric composite 失效
    制造多层压电复合材料的方法

    公开(公告)号：US5507898A

    公开(公告)日：1996-04-16

    申请号：US313924

    申请日：1994-09-26

    申请人： Masashi Aoki ,  Kiyoshi Fukai ,  Kazunobu Abe ,  Koichiro Sakata ,  Tadashi Takenaka

    发明人： Masashi Aoki ,  Kiyoshi Fukai ,  Kazunobu Abe ,  Koichiro Sakata ,  Tadashi Takenaka

    IPC分类号： H01L41/39 ,  B32B31/04 ,  B32B31/20

    CPC分类号： H01L41/1876 ,  H01L41/43

    摘要： A multilayer piezoelectric composite comprising a bonded laminate each layer of which is composed of a green sheet of a low-temperature sintering lead zirconate titanate piezoelectric ceramic. The temperature coefficient of a frequency constant of at least one layer has a polarity opposite to the polarity of those of the other layers. The bonded laminate is sintered at a temperature which does not produce any or almost any interdiffusion between layers so that the absolute value of the temperature coefficient of a frequency constant of the bonded laminate is smaller than the absolute value of the temperature coefficient of a frequency constant of any or one of the layers.

    摘要翻译： 1.一种多层压电复合体，其特征在于，具有接合层叠体，其各层由低温烧结铅酸锆酸铅压电陶瓷的生片构成。 至少一层的频率常数的温度系数具有与其它层的极性相反的极性。 接合层叠体在层间不产生或几乎相互扩散的温度下进行烧结，使得接合层叠体的频率常数的温度系数的绝对值小于频率常数的温度系数的绝对值 的任何一层或一层。

    Process for producing a composition which includes perovskite compounds
    5.
    发明授权
    Process for producing a composition which includes perovskite compounds 失效
    制备包括钙钛矿化合物的组合物的方法

    公开(公告)号：US4643984A

    公开(公告)日：1987-02-17

    申请号：US758072

    申请日：1985-07-23

    申请人： Kazunobu Abe ,  Masashi Aoki ,  Hiroaki Rikimaru ,  Takeshi Ito ,  Kazuhisa Hidaka ,  Kayoko Segawa

    发明人： Kazunobu Abe ,  Masashi Aoki ,  Hiroaki Rikimaru ,  Takeshi Ito ,  Kazuhisa Hidaka ,  Kayoko Segawa

    IPC分类号： C04B35/00 ,  C01G19/00 ,  C01G21/00 ,  C01G23/00 ,  C01G25/00 ,  C01G27/00 ,  C04B35/468 ,  C04B35/491 ,  C04B35/493 ,  C04B35/46

    CPC分类号： C04B35/491 ,  B82Y30/00 ,  C01G19/00 ,  C01G21/00 ,  C01G23/003 ,  C01G23/006 ,  C01G25/00 ,  C01G25/006 ,  C01G27/006 ,  C04B35/4682 ,  C04B35/493 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/32 ,  C01P2004/62 ,  C01P2004/64

    摘要： A process for producing a composition which includes a perovskite compound, the process comprising:(a) subjecting a mixture of a hydroxide of at least one A group element selected from the group consisting of Mg, Ca, Sr, Ba, Pb and rare earth elements and a hydroxide of at least one B group element selected from the group consisting of Ti, Zr, Hf and Sn, to the hydrothermal reaction in an aqueous reaction medium;(b) adding an insolubilizing agent to the resultant reaction mixture to insolubilize water-soluble compounds of the unreacted A group element dissolved in the aqueous medium so as to adjust the ratio of the group A element to the group B element in a resulting composition to a desired A/B ratio; or(c) filtering, washing with water and drying the resultant reaction mixture to provide a solid reaction product, dispersing the reaction product in an aqueous medium to form a slurry, adding to the slurry a water-soluble compound of the A group element, and then adding to the slurry an insolubilizing agent to insolubilize the water-soluble compound of the A group element so as to adjust the ratio of the group A element to the group B element in a resulting composition to a desired A/B ratio; and(d) filtering, washing and drying the resultant mixture to provide the composition which includes the perovskite compound having the desired A/B ratio.

    摘要翻译： 一种制备包括钙钛矿化合物的组合物的方法，该方法包括：（a）对选自Mg，Ca，Sr，Ba，Pb和稀土的至少一种A族元素的氢氧化物的混合物 元素和选自Ti，Zr，Hf和Sn中的至少一种B族元素的氢氧化物，在水性反应介质中进行水热反应; （b）向所得反应混合物中加入不溶解剂，使溶解在水性介质中的未反应的A族元素的水溶性化合物不溶化，从而将所得组合物中的A族元素与B族元素的比例调整为 所需的A / B比; 或（c）过滤，用水洗涤并干燥得到的反应混合物以提供固体反应产物，将反应产物分散在水性介质中以形成浆料，向浆料中加入A组元素的水溶性化合物， 然后向所述浆料中添加不溶解剂以使所述A组元素的水溶性化合物不溶化，以将所得组合物中的A族元素与B族元素的比例调节至所需的A / B比; 和（d）过滤，洗涤和干燥所得混合物以提供包含具有所需A / B比的钙钛矿化合物的组合物。

    Ceramic dielectrics and compositions therefor
    6.
    发明授权
    Ceramic dielectrics and compositions therefor 失效
    陶瓷电介质及其组合物

    公开(公告)号：US5084424A

    公开(公告)日：1992-01-28

    申请号：US641793

    申请日：1991-01-16

    申请人： Kazunobu Abe ,  Masashi Aoki ,  Kazuhisa Hidaka

    发明人： Kazunobu Abe ,  Masashi Aoki ,  Kazuhisa Hidaka

    IPC分类号： C04B35/46 ,  C04B35/468 ,  C04B35/49 ,  H01B3/12 ,  H01G4/12

    CPC分类号： C04B35/4682 ,  C04B35/49 ,  H01G4/1227 ,  H01G4/1245

    摘要： A composition for producing ceramic dielectrics which comprises: a mixture of barium titanate which has average particle size of 0.1-1.5 .mu.m is amounts of 98-60 mole % and a perovskite type barium titanate solid solution which has average particle size of 0.1-1.5 .mu.m and a Curie temperature of 50.degree.-115.degree. C. in amounts of 2-40 mole %; and(A) at least one of niobium oxides and tantalum oxides in amounts of 0.3-2 moles % in relation to 100 mole % of the mixture; and(B) at least one of cobalt oxides, nickel oxides, magnesium oxides, manganese oxides, copper oxides and oxides of a rare earth metal in amounts of 0.1-2 moles % in relation to 100 mole % of the mixture.The composition provides a ceramic dielectric which has a large relative permittivity and still has a small temperature dependence of relative permittivity within .+-.15% over a temperature range between -55.degree. C. and +125.degree. C. taking a relative permittivity at 20.degree. C. as a standard.

    摘要翻译： 一种陶瓷电介质的制造用组合物，其特征在于，其平均粒径为0.1〜1.5μm的钛酸钡的混合物为98〜60摩尔％，平均粒径为0.1〜1.5微米的钙钛矿型钛酸钡固溶体 微米和居里温度为50-115℃，用量为2-40摩尔％; 和（A）相对于混合物的100摩尔％的量为0.3-2摩尔％的铌氧化物和氧化钽中的至少一种; 和（B）相对于100摩尔％的混合物，钴氧化物，氧化镍，氧化镁，氧化锰，氧化铜和稀土金属的氧化物中的至少一种为0.1-2摩尔％。 该组合物提供了一种陶瓷电介质，该陶瓷电介质具有较大的相对介电常数，并且在-55℃至+ 125℃之间的温度范围内相对介电常数在±15％以内仍具有较小的温度依赖性，相对介电常数为20 DEG C.作为标准。

    Method for preventing the wear of a monolithic catalyst by dusts
    9.
    发明授权
    Method for preventing the wear of a monolithic catalyst by dusts 失效
    防止整体式催化剂磨损的方法

    公开(公告)号：US4294806A

    公开(公告)日：1981-10-13

    申请号：US96561

    申请日：1979-11-21

    申请人： Kazunobu Abe ,  Shoichi Tamura ,  Tadao Nakatsuji

    发明人： Kazunobu Abe ,  Shoichi Tamura ,  Tadao Nakatsuji

    IPC分类号： B01D53/86 ,  B01J35/04 ,  C04B38/00 ,  C04B41/50 ,  B01D53/36

    CPC分类号： C04B41/009 ,  B01D53/86 ,  B01D53/8628 ,  B01D53/8631 ,  B01J35/04 ,  C04B38/0006 ,  C04B41/5022 ,  B01J2219/32272 ,  B01J2219/32296 ,  B01J2219/32466 ,  Y10T428/24149

    摘要： In a method for treating a gas containing dusts therein under a monolithic catalyst consisting of a ceramic support which is substantially porous throughout the structure, and has active ingredients uniformly dispersed therein and passages therethrough parallel to the flow of the gas for allowing the gas to pass therethrough, the improvement in which the catalyst has the sintered front portion or has a vitreous coating on the front portion. Alternatively, the improvement in which a metal or sintered ceramic lid having openings therethrough is fixed onto the front face of the catalyst with the passages in alignment with the openings of the lid.

    摘要翻译： 在由整体式催化剂组成的整体式催化剂处理含有灰尘的气体的方法中，所述整体催化剂由整个结构中基本上是多孔的陶瓷载体组成，并且具有均匀分散在其中的活性成分和与气体流平行的通道，以允许气体通过 其中催化剂具有烧结前部分或在前部具有玻璃质涂层的改进。 或者，其中具有开口的金属或烧结陶瓷盖的固定在催化剂的正面上，其中通道与盖的开口对准。