利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

29 条记录 (耗时 0.016 秒)

    Dielectric ceramics
    3.
    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 of preparing ferroelectric ceramics
    4.
    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 ceramics composite material
    6.
    发明授权
    Dielectric ceramics composite material 失效
    介电陶瓷复合材料

    公开(公告)号：US5403788A

    公开(公告)日：1995-04-04

    申请号：US231989

    申请日：1994-04-21

    申请人： Masamitsu Nishida ,  Koichi Kugimiya

    发明人： Masamitsu Nishida ,  Koichi Kugimiya

    IPC分类号： H01L41/18 ,  C04B35/49 ,  C03C14/00

    CPC分类号： H01L41/183

    摘要： A dielectric ceramic composite material comprising a dielectric ceramics and a glass having a softening temperature lower than the sintering temperature of the dielectric ceramics, wherein said particles of the dielectric ceramics are randomly dispersed in a matrix of the glass. This composite material can be formed by molding a mixture of the dielectric ceramics powder and glass powder at first, and by firing this mold (including a film thereof) at the softening temperature of the glass or higher. The obtained dielectric ceramics composite material can be extensively utilized as various ceramic functional elements or electronic components incorporated in various piezoelectric, pyroelectric, ferroelectric memory, actuator elements and many others.

    摘要翻译： 1.一种电介质陶瓷复合材料，其特征在于，包括电介质陶瓷和软化温度低于所述电介质陶瓷的烧结温度的玻璃，其中，所述电介质陶瓷的粒子随机分散在所述玻璃的基体中。 该复合材料可以首先通过模制电介质陶瓷粉末和玻璃粉末的混合物，并且通过在玻璃的软化温度或更高的温度下烧制该模具（包括其膜）来形成。 所获得的电介质陶瓷复合材料可广泛用作各种陶瓷功能元件或并入各种压电，热释电，铁电存储器，致动器元件等中的电子元件。

    Agitating mill and method for milling
    7.
    发明授权
    Agitating mill and method for milling 失效
    搅拌机和铣削方法

    公开(公告)号：US5320284A

    公开(公告)日：1994-06-14

    申请号：US783678

    申请日：1991-10-29

    申请人： Masamitsu Nishida ,  Hamae Ando ,  Koichi Kugimiya

    发明人： Masamitsu Nishida ,  Hamae Ando ,  Koichi Kugimiya

    IPC分类号： B02C17/00 ,  B01F7/00 ,  B02C17/16 ,  B02C17/20

    CPC分类号： B02C17/166 ,  B02C17/20

    摘要： In an agitating mill for producing the objective fine powder, the agitating medium having an average particle diameter of no more than 0.6 mm is charged in an annular gap between the external side wall of the agitator and the internal side wall of the milling vessel. Thereby the agitator can be rotated at a peripheral speed of no less than 30 m/s, and it results in a high grinding rate and reduced amount of impurity which means worn-out grinding media included in the objective fine powder.

    摘要翻译： 在用于制造目标细粉末的搅拌机中，将平均粒径不大于0.6mm的搅拌介质装入搅拌器的外侧壁和研磨容器的内侧壁之间的环形间隙中。 因此，搅拌器可以以不小于30m / s的圆周速度旋转，并且导致高的研磨速度和减少的杂质含量，这意味着包括在目标细粉中的磨损的研磨介质。

    Piezoelectric ceramics and their production methods
    8.
    发明授权
    Piezoelectric ceramics and their production methods 失效
    压电陶瓷及其制作方法

    公开(公告)号：US5221872A

    公开(公告)日：1993-06-22

    申请号：US889064

    申请日：1992-05-26

    申请人： Masamitsu Nishida ,  Hamae Ando ,  Kouichi Kugimiya

    发明人： Masamitsu Nishida ,  Hamae Ando ,  Kouichi Kugimiya

    IPC分类号： C04B35/00 ,  C04B35/49 ,  H01L41/18 ,  H01L41/187 ,  H01L41/39

    CPC分类号： H01L41/187 ,  C04B35/49

    摘要： A piezoelectric ceramic comprising at least two kinds of ceramic domains that are different from each other either in composition or in piezoelectric characteristics. It is made possible to produce a piezoelectric ceramic with better piezoelectric characteristics than that composed of a single kind of ceramic domain by having the compositions or the piezoelectric characteristics of each ceramic domain properly selected. For example, it is possible to obtain a piezoelectric ceramic of an extremely small rate of change in resonance frequency in response to a change in temperature by having a ceramic domain with a positive rate of change in resonance frequency in response to a change in temperature and the one with a negative rate of change in resonance frequency in response to a change in temperature combined.

    摘要翻译： 包括在组成或压电特性中彼此不同的至少两种陶瓷畴的压电陶瓷。 通过具有适当地选择每个陶瓷畴的组成或压电特性，可以生产出具有比由单种陶瓷域组成的压电特性更好的压电特性的压电陶瓷。 例如，可以通过响应于温度的变化而具有谐振频率的正的变化率的陶瓷区域而响应于温度变化而获得极小的谐振频率变化率的压电陶瓷，并且 响应于温度变化的共振频率的负变化率。

    Media agitating mill and method for milling ceramic powder
    9.
    发明授权
    Media agitating mill and method for milling ceramic powder 失效
    介质搅拌机和陶瓷粉末研磨方法

    公开(公告)号：US5213702A

    公开(公告)日：1993-05-25

    申请号：US944731

    申请日：1992-09-14

    申请人： Masamitsu Nishida ,  Hamae Ando ,  Koichi Kugimiya

    发明人： Masamitsu Nishida ,  Hamae Ando ,  Koichi Kugimiya

    IPC分类号： B02C17/16 ,  B02C17/20 ,  B02C23/06

    CPC分类号： B02C17/16 ,  B02C17/20 ,  B02C23/06

    摘要： Provided is a method for milling ceramic powder which comprises wet-milling at least one ceramic powder by a media agitating mill wherein the volume of liquid is 4 times or less the net-volume of the ceramic powder. A dispersing agent is added and milling is carried out using grinding media of 1 mm, or less, in diameter. Further, a media agitating mill used for the above method is provided which comprises a milling chamber, grinding media and an agitator wherein the peripheral speed of the agitator is 10 m/s or more, the grinding media have a diameter of 1 mm or less and packing fraction of the grinding media is 65-85 vol %. A method for making a sintered body from fine powder produced by the above milling method is also disclosed.

    摘要翻译： 提供了一种用于研磨陶瓷粉末的方法，其包括通过介质搅拌研磨机湿磨研磨至少一种陶瓷粉末，其中液体的体积是陶瓷粉末的净体积的4倍或更小。 加入分散剂，并使用直径为1mm或更小的研磨介质进行研磨。 此外，提供了用于上述方法的介质搅拌机，其包括研磨室，研磨介质和搅拌器，其中搅拌器的圆周速度为10m / s以上，研磨介质的直径为1mm以下 研磨介质的填充率为65-85vol％。 还公开了通过上述研磨方法制造的细粉末制造烧结体的方法。

    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。