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19 条记录 (耗时 0.035 秒)

    Ferroelectric relaxor actuator for an ink-jet print head
    1.
    发明授权
    Ferroelectric relaxor actuator for an ink-jet print head 失效
    用于喷墨打印头的铁电弛豫致动器

    公开(公告)号：US5790156A

    公开(公告)日：1998-08-04

    申请号：US844915

    申请日：1997-04-22

    申请人： Jon C. Mutton ,  Hue P. Le ,  Qiming Zhang ,  Ronald L. Adams ,  L. Eric Cross ,  Thomas R. Shrout ,  Qiyue Chia Jiang

    发明人： Jon C. Mutton ,  Hue P. Le ,  Qiming Zhang ,  Ronald L. Adams ,  L. Eric Cross ,  Thomas R. Shrout ,  Qiyue Chia Jiang

    IPC分类号： B41J2/045 ,  B41J2/14 ,  B41J2/16

    CPC分类号： B41J2/1623 ,  B41J2/04506 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/161 ,  B41J2/1625 ,  B41J2/1626 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1643 ,  B41J2002/14387

    摘要： A ferroelectric relaxor ceramic actuator material, such as lead magnesium niobate ("PMN"), has high electromechanical conversion efficiency, exhibits wide operating and manufacturing temperature ranges, does not require permanent polarization, and provides useful mechanical activity with reduced electrical drive voltages. A PMN actuator (66) may be bonded to an actuator diaphragm (64) with a high temperature soldering or brazing process. PMN material also has a diffuse Curie point range in which the dielectric constant (40), "d" coefficient (32), and dielectric loss (42) characteristics all rise to a peak and then fall as the temperature increases. A phase-change ink-jet print head (50) employs a PMN actuator that is compounded with lead titanate ("PT") to increase the temperature (T.sub.M) at which the peak dielectric constant occurs. The print head is operated at a temperature beyond the peak where the PMN:PT actuator "d" coefficient decreases as the temperature increases such that an increase in ink-jet drop ejection velocity caused by reduced ink viscosity is compensated for by a corresponding reduction in mechanical activity. The PMN:PT actuator thereby relaxes the temperature regulation and heat spreading requirements of the phase-change ink-jet print head.

    摘要翻译： 铁电弛豫陶瓷致动器材料，例如铌酸铅镁（“PMN”）具有高机电转换效率，表现出广泛的工作和制造温度范围，不需要永久极化，并且在降低的电驱动电压下提供有用的机械活动。 PMN致动器（66）可以通过高温焊接或钎焊工艺结合到致动器隔膜（64）。 PMN材料也具有扩散居里点范围，其中介电常数（40），“d”系数（32）和介电损耗（42）特性都全部升高到峰值，然后随温度升高而下降。 相变喷墨打印头（50）采用与钛酸铅（“PT”）复合的PMN致动器，以增加出现峰值介电常数的温度（TM）。 打印头的工作温度超过PMN：PT执行器“d”系数随着温度升高而降低的峰值温度，从而降低油墨粘度引起的喷墨滴落速度的增加可以通过相应的减小来补偿 机械活动。 因此，PMN：PT致动器松弛了相变喷墨打印头的温度调节和散热要求。

    Bismuth pyrochlore microwave dielectric materials
    4.
    发明授权
    Bismuth pyrochlore microwave dielectric materials 失效
    铋烧绿石微波介电材料

    公开(公告)号：US06680269B2

    公开(公告)日：2004-01-20

    申请号：US09892364

    申请日：2001-06-27

    申请人： Tomohiro Sogabe ,  Thomas R. Shrout ,  Michael T. Lanagan ,  Clive A. Randall ,  Hyuk-Joon Youn

    发明人： Tomohiro Sogabe ,  Thomas R. Shrout ,  Michael T. Lanagan ,  Clive A. Randall ,  Hyuk-Joon Youn

    IPC分类号： C04B35495

    CPC分类号： C04B35/495 ,  H01B3/12

    摘要： The disclosed invention relates to Bi2O3—ZnO—Ta2O5 dielectric compounds and compositions, and to their manufacture. The compounds of the invention have outstanding K, Q, TCF, and TCC. Examples of these properties include a K of between 58 and 80, a low dielectric loss (tan &dgr;

    摘要翻译： 所公开的发明涉及Bi2O3-ZnO-Ta2O5介电化合物和组合物及其制造。 本发明化合物具有优异的K，Q，TCF和TCC。 这些性质的实例包括58至80之间的K，低介电损耗（tanδ<0.003）和TCC <30ppm /℃。所生产的陶瓷组合物包括由Bi2（ZnTa2）xO6x + 3表示的组成，其中0.57 <= X＆LE; 1.0，BI2（ZnTay）2 / 3O（（5y + 11）/ 3）其中1.0 <= y <= 3.0，以及Bi2（ZnTay）2 / 3O（（5y + 11）/ 3 ），其中1.0 <= y <= 3.0，条件是y不为2.0。 由式r（Bi2（Zn1 / 3Ta2 / 3）2O7） - （1-r）（Bi3 / 2Zn2 / 3）（Zn1 / 2Ta3 / 2）O7））定义的化合物的固溶体，其中0

    High temperature piezoelectric material
    6.
    发明授权
    High temperature piezoelectric material 失效
    高温压电材料

    公开(公告)号：US07622851B2

    公开(公告)日：2009-11-24

    申请号：US11333753

    申请日：2006-01-17

    申请人： Shujun Zhang ,  Thomas R. Shrout

    发明人： Shujun Zhang ,  Thomas R. Shrout

    IPC分类号： H01L41/08

    CPC分类号： H01L41/18

    摘要： Piezoelectric devices with excellent high temperature operation capabilities are described, including piezoelectric sensors and actuators that use a rare earth calcium oxyborate or langanite as the piezoelectric material.

    摘要翻译： 描述了具有优异的高温操作能力的压电器件，包括使用稀土硼酸钙或硅镁矿作为压电材料的压电传感器和致动器。

    PZT/Polymer composites and their fabrication
    8.
    发明授权
    PZT/Polymer composites and their fabrication 失效
    PZT /聚合物复合材料及其制备

    公开(公告)号：US4330593A

    公开(公告)日：1982-05-18

    申请号：US206732

    申请日：1980-11-13

    申请人： Thomas R. Shrout ,  Walter A. Schulze ,  James V. Biggers

    发明人： Thomas R. Shrout ,  Walter A. Schulze ,  James V. Biggers

    IPC分类号： H01L41/18 ,  B32B5/16 ,  B05D5/12 ,  B32B15/08 ,  H04R17/00

    CPC分类号： H01L41/1876 ,  H01L41/183 ,  Y10T29/42 ,  Y10T428/2998

    摘要： PZT/polymer composites and a simplified method of their fabrication are dribed. Commercially available PZT Pb(Zr, Ti)O.sub.3 powder is thoroughly mixed with a binder such as polyvinylalcohol and polymethyl methacrylate (PMM) spheres and pressed into pellets. The binder and PMM spheres are burnt out by heating pellets slowly and the porous pellets so obtained are sintered by heating them in closed high-purity alumina crucibles and lead zirconate as a source of lead is added thereto. The highly porous pellets thus obtained are impregnated with a suitable polymer such as silicone rubber elastomer or vinylcyclohexene dioxide epoxy.

    摘要翻译： 描述了PZT /聚合物复合材料及其制造的简化方法。 将市售的PZT Pb（Zr，Ti）O 3粉末与粘合剂如聚乙烯醇和聚甲基丙烯酸甲酯（PMM）球充分混合并压制成颗粒。 粘合剂和PMM球体通过缓慢加热颗粒而被烧制，并且将如此得到的多孔颗粒通过在封闭的高纯度氧化铝坩埚中加热而烧结，并将铅锆酸铅作为铅源加入其中。 由此获得的高度多孔的颗粒用合适的聚合物如硅橡胶弹性体或乙烯基环己烷二氧化物环氧树脂浸渍。