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    Dielectric ceramics
    2.
    发明授权
    Dielectric ceramics 失效
    电介质陶瓷

    公开(公告)号：US4338403A

    公开(公告)日：1982-07-06

    申请号：US265708

    申请日：1981-05-21

    申请人： Syunichiro Kawashima ,  Masamitsu Nishida ,  Ichiro Ueda ,  Hiromu Ouchi

    发明人： Syunichiro Kawashima ,  Masamitsu Nishida ,  Ichiro Ueda ,  Hiromu Ouchi

    IPC分类号： C04B35/462 ,  C04B35/46 ,  C04B35/50 ,  H01B3/12

    CPC分类号： C04B35/462

    摘要： A dielectric ceramic consisting essentially of at least 88 weight % of a main component and up to 12 weight % of stannic oxide (SnO.sub.2), said main component consisting essentially of 34.5 to 82 weight % of titanium oxide (TiO.sub.2), 9 to 63 weight % of Praseodymium oxide (Pr.sub.6 O.sub.11) and 2.5 to 23.5 weight % of barium oxide (BaO), at most 95 weight % of said praseodymium oxide being replaceable by neodymium oxide (Nd.sub.2 O.sub.3).It exhibits large dielectric constant and low microwave loss with large temperature-stability for resonant frequency and it is suitable for use as dielectric resonators, electrical filters, substrates, etc.

    摘要翻译： 一种介电陶瓷，主要由至少88重量％的主要成分和至多12重量％的氧化锡（SnO 2）组成，所述主要成分基本上由34.5至82重量％的氧化钛（TiO 2）组成，9至63重量％ 氧化镨（Pr 6 O 11）的含量为2.5〜23.5重量％，氧化钡（BaO）为2.5〜23.5重量％，氧化钕可以由氧化钕（Nd 2 O 3）代替。 它表现出大的介电常数和低的微波损耗，具有较高的谐振频率温度稳定性，适用于介质谐振器，电气滤波器，基板等。

    Method for preparing piezoelectric ceramics
    4.
    发明授权
    Method for preparing piezoelectric ceramics 失效
    制备压电陶瓷的方法

    公开(公告)号：US4226827A

    公开(公告)日：1980-10-07

    申请号：US67681

    申请日：1979-08-20

    申请人： Masamitsu Nishida ,  Syunichiro Kawashima ,  Ichiro Ueda ,  Hiromu Ouchi

    发明人： Masamitsu Nishida ,  Syunichiro Kawashima ,  Ichiro Ueda ,  Hiromu Ouchi

    IPC分类号： C04B35/491 ,  H01L41/187 ,  H01L41/39 ,  H01L41/43 ,  C04B35/36

    CPC分类号： C04B35/491 ,  H01L41/1876 ,  H01L41/43

    摘要： A piezoelectric ceramic elements obtained by hot-press sintering a composition expressed by the formula:(1-w)PbTi.sub.1-z Zr.sub.z O.sub.3 +wMnO.sub.2at a temperature of 1050.degree. to 1300.degree. C. under a pressure of 100 to 500 Kg/cm.sup.2 for 0.5 to 24 hours shows a mechanical quality factor of 200 or more and a Poisson's ratio of more than 1/3 and gives a piezoelectric material having a large coupling coefficient which can be processed into a thin sheet having a thickness of 30 .mu.m and is especially suitable as a material for resonators and filters by utilizing its thickness extensional vibration.

    摘要翻译： 在1050〜1300℃的温度下，在100〜500Kg / cm 2的压力下热压烧结由式（1-w）PbTi1-zZrzO3 + wMnO2表示的组合物获得的压电陶瓷元件，其为0.5 至24小时显示机械品质因数为200以上，泊松比大于1/3，得到具有大耦合系数的压电材料，可以加工成厚度为30μm的薄片，特别是 通过利用其厚度延伸振动适合作为谐振器和滤波器的材料。

    Method of preparing ferroelectric ceramics
    9.
    发明授权
    Method of preparing ferroelectric ceramics 失效
    制备铁电陶瓷的方法

    公开(公告)号：US3963631A

    公开(公告)日：1976-06-15

    申请号：US546780

    申请日：1975-02-03

    申请人： Hiromu Ouchi ,  Masamitsu Nishida ,  Kazunori Numata

    发明人： Hiromu Ouchi ,  Masamitsu Nishida ,  Kazunori Numata

    IPC分类号： C04B35/49 ,  C04B35/46 ,  C04B35/48 ,  C04B35/493 ,  C04B35/50 ,  C04B35/51 ,  H01L41/187 ,  H01L41/39

    CPC分类号： C04B35/50 ,  C04B35/46 ,  C04B35/48 ,  C04B35/51

    摘要： A process for preparing strengthened ferroelectric ceramics, which comprises sintering ceramic materials and then heat treating the sintered ceramics at a temperature from about 100.degree. to about 400.degree.C lower than the final sintering temperature of ceramics, for about 1 to about 60 hrs., and then cooling at a rate from about 300.degree. to about 10.degree.C per hour. Strengthened ferroelectric ceramics are obtained among the following ferroelectric ceramic compositions:I. pb([B.sub.1 ].sub.A Ta.sub.1.sub.-A)O.sub.3 --PbTiO.sub.3 --PbZrO.sub.3, where [B.sub.1 ] is Mg, Zn, Cd, Sn, Mn, Fe, Co, and Ni when A=1/3 and [B.sub.1 ] is Li and Cu when A=1/4,Ii. pb([B.sub.2 ].sub.B Ta.sub.1.sub.-B)O.sub.3 --Pb([B.sub.3 ].sub.C Ta.sub.1.sub.-C)O.sub.3 -PbTiO.sub.3 -PbZrO.sub.3, where [B.sub.2 ] and [B.sub.3 ], [B.sub.2 ].noteq.[B.sub.3 ], are Mg, Zn, Cd, Sn, Mn, Fe, Co and Ni when B and C=1/3, and [B.sub.2 ] and [B.sub.3 ], [B.sub.2 .noteq.[B.sub.3 ], are Li and Cu when B and C=1/4,Iii. pb([B.sub.1 ].sub.A Ta.sub.1.sub.-A)O.sub.3 PbTiO.sub.3 --PbZrO.sub.3 with MnO.sub.2, where [B.sub.1 ] is Mg, Zn, Cd, Sn, Fe, Co and Ni when A=1/3, and [B.sub.1 ] is Li and Cu when A=1/4, andIv. pb([B.sub.2 ].sub.B Ta.sub.1.sub.-B)O.sub.3 --Pb([B.sub.3 ].sub.C Ta.sub.1.sub.-C)O.sub.3 --PbTiO.sub.3 --PbZrO.sub.3 with MnO.sub.2, where [B.sub.2 ] and [B.sub.3 ], [B.sub.2 ].noteq. [B.sub.3 ], are Mg, Zn, Cd, Sn, Fe, Co and Ni when B and C=1/3, and [B.sub.2 ] and [B.sub.3 ], [B.sub.2 ].noteq.[B.sub.3 ], are Li and Cu when B and C=1/4.

    摘要翻译： 一种制备强化铁电陶瓷的方法，包括烧结陶瓷材料，然后在比陶瓷的最终烧结温度低约100至约400℃的温度下对烧结陶瓷进行热处理约1至约60小时， 然后以约300至约10℃/小时的速率冷却。 在以下铁电陶瓷组合物中获得强化铁电陶瓷：

    Dielectric ceramic compositions
    10.
    发明授权
    Dielectric ceramic compositions 失效
    介电陶瓷组合物

    公开(公告)号：US4555494A

    公开(公告)日：1985-11-26

    申请号：US532911

    申请日：1983-09-16

    申请人： Masamitsu Nishida ,  Hiromu Ouchi ,  Yoshihiro Matsuo

    发明人： Masamitsu Nishida ,  Hiromu Ouchi ,  Yoshihiro Matsuo

    IPC分类号： C04B35/497 ,  H01G4/12 ,  C04B35/00

    CPC分类号： C04B35/497 ,  H01G4/1254

    摘要： A dielectric ceramic composition consisting essentially of:Pb(M.sub.1/3 Nb.sub.2/3).sub.x (M'.sub.a Nb.sub.1-a).sub.y (Fe.sub.2/3 W.sub.1/3).sub.z O.sub.3,wherein M represents Ni or Mg and x+y+z=1, andwhen M is Ni, M'=Fe, a=1/2, 0.01.ltoreq.x.ltoreq.0.40, 0.45.ltoreq.y.ltoreq.0.80 and 0.05.ltoreq.z.ltoreq.0.50; andwhen M is Mg, M'=Zn, a=1/3, 0.01.ltoreq.x.ltoreq.0.70, 0.15.ltoreq.y.ltoreq.0.45 and 0.05.ltoreq.z.ltoreq.0.60.The ceramic composition allows low-temperature sintering and exhibits high dielectric constant.

    摘要翻译： 一种介电陶瓷组合物，主要由Pb（M1 / 3Nb2 / 3）x（M'aNb1-a）y（Fe2 / 3W1 / 3）zO3组成，其中M表示Ni或Mg，x + y + z = 1， 当M是Ni时，M'= Fe，a = 1 /2,0.01≤x≤0.40,0.45≤y≤0.80和0.05≤z≤0.50; 当M是Mg时，M'= Zn，a = 1 /3,0.01≤x≤0.70,0.15≤y≤0.45且0.05≤z≤0.60。 陶瓷组合物允许低温烧结并表现出高介电常数。