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    Ceramic compositions having high dielectric constant
    3.
    发明授权
    Ceramic compositions having high dielectric constant 失效
    具有高介电常数的陶瓷组合物

    公开(公告)号：US4078938A

    公开(公告)日：1978-03-14

    申请号：US759095

    申请日：1977-01-13

    申请人： Masatomo Yonezawa ,  Tomeji Ohno

    发明人： Masatomo Yonezawa ,  Tomeji Ohno

    IPC分类号： C04B35/497 ,  H01G4/12 ,  C04B35/26

    CPC分类号： H01G4/1254 ,  C04B35/497 ,  Y10T29/435

    摘要： A ceramic composition allowing low-temperature sintering at a temperature below 1000.degree. C and having a high dielectric constant over 5000 essentially contains Pb(Fe 2/3 W 1/3)O.sub.3 and Pb(Fe 1/3 Nb 2/3)O.sub.3, in which the molecular ratio of Pb(Fe 2/3 W 1/3)O.sub.3 to Pb(Fe 1/3 Nb 2/3)O.sub.3 ranges from about 0.2 to 0.5.

    摘要翻译： 允许在低于1000℃的温度下低温烧结并具有超过5000的高介电常数的陶瓷组合物基本上含有Pb（Fe 2/3 W 1/3）O 3和Pb（Fe 1/3 Nb 2/3）O 3 ，其中Pb（Fe 2/3 W 1/3）O 3与Pb（Fe 1/3 Nb 2/3）O 3的分子比在约0.2至0.5的范围内。

    Ceramic composition with improved electrical and mechanical properties
    5.
    发明授权
    Ceramic composition with improved electrical and mechanical properties 失效
    陶瓷组合物具有改善的电气和机械性能

    公开(公告)号：US4791078A

    公开(公告)日：1988-12-13

    申请号：US89456

    申请日：1987-08-26

    申请人： Susumu Saito ,  Masatomo Yonezawa ,  Kazuaki Utsumi

    发明人： Susumu Saito ,  Masatomo Yonezawa ,  Kazuaki Utsumi

    IPC分类号： C04B35/00 ,  C04B35/46 ,  C04B35/499 ,  H01B3/12 ,  H01G4/12

    CPC分类号： C04B35/499 ,  H01G4/1218 ,  H01G4/1254

    摘要： A ceramic composition comprising a solid solution of the ternary system consisting essentially of lead magnesium-niobate (Pb(Mg.sub.1/3 Nb hd 2/3)O.sub.3), lead nickel-niobate (Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3) and lead titanate (PbTiO.sub.3) as a major constituent, and an additional constituent consisting essentially of lead manganese-niobate (Pb(Mn.sub.1/3 Nb.sub.2/3)O.sub.3). The ternary system is expressed by the general formula [Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 ].sub.x -[Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 ].sub.y -[PbTiO.sub.3 ].sub.z wherein the subscripts x, y and z satisfy the equation x+y+z=1 and fall within the region defined by the line segments joining the seven points A, B, C, D, E, F and G within the triangular ternary-system diagram shown in the accompanying drawing. Preferably, the lead manganese-niobate (Pb(Mn.sub.1/3 Nb.sub.2/3)O.sub.3) is contained in a proportion of 0.01 mol % to 10 mol % to the major constituent.

    摘要翻译： 一种陶瓷组合物，其包含三元体系的固溶体，其基本上由铌酸镁镁（Pb（Mg1 / 3NbHd2 / 3）O3），镍铌酸铅（Pb（Ni1 / 3Nb2 / 3）O3）和钛酸铅 （PbTiO3）作为主要成分，以及主要由铌酸铅（Pb（Mn1 / 3Nb2 / 3）O3）组成的附加成分。 三元体系由通式[Pb（Mg1 / 3Nb2 / 3）O3] x- [Pb（Ni1 / 3Nb2 / 3）O3] y- [PbTiO3] z表示，其中下标x，y和z满足等式 x + y + z = 1，并且落入由附图所示的三角形三元系统图内的连接七个点A，B，C，D，E，F和G的线段限定的区域内。 铅铌酸铅（Pb（Mn1 / 3Nb2 / 3）O3）的含量优选为主成分的0.01mol％〜10mol％。

    Ceramic compositions having high dielectric constant and high specific resistivity
    8.
    发明授权
    Ceramic compositions having high dielectric constant and high specific resistivity 失效
    具有高介电常数和高电阻率的陶瓷组合物

    公开(公告)号：US4450240A

    公开(公告)日：1984-05-22

    申请号：US475538

    申请日：1983-03-15

    申请人： Haruhiko Miyamoto ,  Masatomo Yonezawa

    发明人： Haruhiko Miyamoto ,  Masatomo Yonezawa

    IPC分类号： C04B35/499 ,  H01G4/12 ,  C04B35/00 ,  C04B35/46

    CPC分类号： H01G4/1254 ,  C04B35/499 ,  H01G4/1218

    摘要： The ceramic composition comprises lead magnesium tungstate [Pb(Mg1/2 W1/2)O.sub.3 ], lead titanate [PbTiO.sub.3 ] and lead nickel niobate [Pb(Ni1/3 Nb2/3)O.sub.3 ]. When the ternary composition is expressed by [Pb(Mg1/2 W1/2)O.sub.3 ]x [PbTiO.sub.3 ]y [Pb(Ni1/3Nb2/3)O.sub.3 ]z where x+y+z=1.00, it lies on lines interconnecting five points (x=0.693, y=0.297, z=0.01), (x=0.495, y=0.495, z=0.01), (x=0.195, y=0.465, z=0.35), (x=0.10, y=0.40, z=0.50) and (x=0.06, y=0.24, z=0.70) and in a region bonded by the lines. In modifications, for the purpose of improving the mechanical strength, 0.02 to 3 mol % of at least one auxiliary ingredient selected from the group consisting of Nb, Ta and Sb, 0.05 to 8 mol % of [Pb(Mn1/3 Ta2/3)O.sub.3 ] 0.05 to 10 mol % of [Pb(Mn1/3 Nb2/3)O.sub.3 ] or 0.05 to 6 mol % of [Pb(Mn1/3 Sb2/3)O.sub.3 ] is added.

    摘要翻译： 陶瓷组合物包括钨酸铅镁[Pb（Mg1 / 2W1 / 2）O3]，钛酸铅[PbTiO3]和铌酸铅镍[Pb（Ni1 / 3Nb2 / 3）O3]。 当三元组成由[Pb（Mg1 / 2W1 / 2）O3] x [PbTiO3] y [Pb（Ni1 / 3Nb2 / 3）O3] z表示时，其中x + y + z = 1.00，它位于互连线 五个点（x = 0.693，y = 0.297，z = 0.01），（x = 0.495，y = 0.495，z = 0.01），（x = 0.195，y = 0.465，z = 0.35），（x = 0.10，y = 0.40，z = 0.50）和（x = 0.06，y = 0.24，z = 0.70）和通过线连接的区域。 在改性中，为了提高机械强度，选择0.02〜3摩尔％的选自Nb，Ta和Sb的至少一种辅助成分，0.05〜8摩尔％的[Pb（Mn 1/3/3 Ta 2/3） ）O3] [Pb（Mn1 / 3Nb2 / 3）O3]的0.05〜10摩尔％或[Pb（Mn1 / 3 Sb2 / 3）O3]的0.05〜6摩尔％。

    Multilayer electrostrictive element which withstands repeated application of pulses
    9.
    发明授权
    Multilayer electrostrictive element which withstands repeated application of pulses 失效
    可承受重复施加脉冲的多层电致伸缩元件

    公开(公告)号：US4523121A

    公开(公告)日：1985-06-11

    申请号：US493583

    申请日：1983-05-11

    申请人： Sadayuki Takahashi ,  Masatomo Yonezawa ,  Atsushi Ochi ,  Takeshi Yano ,  Takeshige Hamatsuki ,  Izumu Fukui

    发明人： Sadayuki Takahashi ,  Masatomo Yonezawa ,  Atsushi Ochi ,  Takeshi Yano ,  Takeshige Hamatsuki ,  Izumu Fukui

    IPC分类号： H01L41/083 ,  H01L41/18

    CPC分类号： H01L41/0471 ,  H01L41/0472 ,  H01L41/0474 ,  H01L41/0477 ,  H01L41/0478

    摘要： A multilayer electrostrictive element has electrostrictive sections (31) defined by internal electrodes (32) in a stack, with a peripheral surface which has a predetermined outline perpendicularly of an axis of the stack, each internal electrode with an outline which is approximately congruent with the predetermined outline (constant cross-section). In order that external electrodes (33, 34) may readily be connected to the internal electrodes grouped by twos, each internal electrode may have a peripheral end which is partly recessed from the predetermined outline, as in FIG. 8. Alternatively, the internal electrodes of each group may be connected together by a conductor rod which passes through the electrostrictive sections, preferably along their edges, contacting alternate electrodes. For a great number of internal electrodes, an element may be manufactured by laminating conductive-paste-printed green sheets transversely of the stack axis and then sintering the lamination. Each internal electrode may include a ceramic material, such as an electrostrictive material of the electrostrictive sections, another electrostrictive material of a lower sintering temperature, or glass.

    摘要翻译： 多层电致伸缩元件具有由叠层中的内部电极（32）限定的电致伸缩部分（31），外周表面具有垂直于堆叠轴线的预定轮廓，每个内部电极具有与 预定轮廓（恒定截面）。 为了使外部电极（33,34）可以容易地连接到由二等分组成的内部电极，每个内部电极可以具有从预定轮廓部分凹进的外周端，如图1所示。 或者，每组的内部电极可以通过导电棒连接在一起，该导体棒穿过电致伸缩部分，优选沿其边缘接触交替电极。 对于大量的内部电极，可以通过将横向于堆叠轴线的导电糊印刷的生片层压然后烧结层压来制造元件。 每个内部电极可以包括陶瓷材料，例如电致伸缩部分的电致伸缩材料，较低烧结温度的另一电致伸缩材料或玻璃。