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    • 1. 发明授权
    • Piezoelectric transducer and process for preparation thereof
    • 压电换能器及其制备方法
    • US4756808A
    • 1988-07-12
    • US869633
    • 1986-06-02
    • Kazuaki UtsumiTakeshi InoueSadayuki Takahashi
    • Kazuaki UtsumiTakeshi InoueSadayuki Takahashi
    • B06B1/06G10K11/02C25D13/00C25D13/02C25D13/04H01L41/04
    • B06B1/067G10K11/02
    • A piezoelelectric transducer usable preferably as a high-frequency ultrasonic probe for diagnostic inspection and the process for preparation thereof are disclosed.The piezoelectric transducer comprises a piezoelectric material layer, a pair of electrode layers formed respectively on the opposite surfaces of said piezoelectric material layer and for applying electric load across the piezoelectric material layer to thereby generate acoustic oscillation or for measuring electric energy generated due to the acoustic oscillation of the piezoelectric material layer, and an acoustic matching section containing at least one quarter-wave matching layer and formed on one of the electrode layers. The acoustic matching section includes an elelctric conductive layer therein.The acoustic matching section is formed by electro deposition, preferably by the electro painting method or electrophoretic method.The ultrasonic probe can be prepared of a frequency band higher than 7.5 MHz, even higher than 10 MHz and provides a clear image of a shallow portion from the surface of an object to be inspected such as a human body.
    • 可以优选使用可用作用于诊断检查的高频超声波探头及其制备方法的压电式换能器。 压电换能器包括压电材料层,一对电极层,分别形成在所述压电材料层的相对表面上,并用于在压电材料层之间施加电负载,从而产生声振动或用于测量由于声学产生的电能 压电材料层的振动,以及包含至少一个四分之一波长匹配层并形成在一个电极层上的声匹配部分。 声匹配部分包括其中的电导电层。 声匹配部分通过电沉积形成,优选通过电喷涂法或电泳方法形成。 可以制备高于7.5MHz,甚至高于10MHz的频带的超声波探头,并从被检查物体(例如人体)的表面提供浅部分的清晰图像。
    • 6. 发明授权
    • Electrostriction transducer comprising electrostriction layers of
axially varied thicknesses
    • 电致伸缩传感器包括轴向变化的厚度的电致伸缩层
    • US4633120A
    • 1986-12-30
    • US662113
    • 1984-10-18
    • Eiichi SatoIzumu FukuiOsamu InuiTakeshi YanoSadayuki TakahashiAtsushi Ochi
    • Eiichi SatoIzumu FukuiOsamu InuiTakeshi YanoSadayuki TakahashiAtsushi Ochi
    • H01L41/08H01L41/083H01L41/09
    • H01L41/083H02N2/043
    • In an electrostriction transducer comprising protection layers (21, 22) in which no electric fields are produced during operation, each of end electrostriction layers (41, 42) which are contiguous to the respective protection layers with pertinent ones of internal electrodes (16, 17) interposed, is given a thicker thickness (at) as compared with other or intermediate electrostriction layers (23) to make the transducer have a long life and a high reliability. The intermediate electrostriction layers may have a common thickness (t). Alternatively, the intermediate electrostriction layers may have monotonously decreasing thicknesses when placed nearer to a plane which bisects a pile (19) of the electrostriction layers parallel to both end surfaces of the pile. When a pair of holding members for the transducer are used on both longitudinal ends, each protection layer is preferably received in an indent formed in the holding member. Alternatively, it is preferred that each holding member should comprise a metal plate contiguous to the protection layer and a metal band surrounding parts of the metal plate and the protection layer.
    • 在包括在操作期间不产生电场的保护层(21,22)的电致伸缩换能器中,每个末端电致伸缩层(41,42)与相应的保护层邻接,具有相应的内部电极(16,17) )与其他或中间电子吸收层(23)相比被赋予较厚的厚度(at),以使换能器具有长寿命和高可靠性。 中间电致伸缩层可以具有共同的厚度(t)。 或者,当放置得更靠近平面于桩的两个端面的电致伸缩层的桩(19)的平面放置时,中间电致伸缩层可以具有单调减小的厚度。 当在两个纵向端部使用一对用于换能器的保持构件时,每个保护层优选地容纳在形成在保持构件中的凹口中。 或者,优选地,每个保持构件应包括与保护层相邻的金属板和围绕金属板和保护层的部分的金属带。
    • 8. 发明授权
    • Electromechanical translation device comprising an electrostrictive
driver of a stacked ceramic capacitor type
    • 机电平移装置包括层叠陶瓷电容器型的电致伸缩驱动器
    • US4570096A
    • 1986-02-11
    • US662881
    • 1984-10-19
    • Atsushi HaraTakao HoriuchiKunio YamadaSadayuki TakahashiKeiji Nakamura
    • Atsushi HaraTakao HoriuchiKunio YamadaSadayuki TakahashiKeiji Nakamura
    • H01L41/09H02N2/02H01L41/08
    • H01L41/0835H02N2/023
    • In a device of the type of an Inchworm Translator as called by Burleigh Instruments, Inc., N.Y., an electromechanical driver for a shaft of the device comprises a plurality of electrostrictive layers stacked longitudinally of the driver with internal electrodes interposed. Preferably, each gripper or clamper for the shaft is of a like structure and comprises a pair of external electrodes on an outer peripheral surface thereof. More preferably, the gripper comprises either an electrically insulating and abrasion resistive or an electrically insulating and vibration damping film which defines a cylindrical inner peripheral surface of the gripper. The film is preferably divided into a plurality of film portions. The electrostrictive layers are preferably of a composition of a formula of (1-x)Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3.xPbTiO.sub.3 where x is about 0.35. The electrically insulating and abrasion resistive film may be of either a plastic or a ceramic material. The electrically insulating and vibration damping film may be of a ferrite composition having a logarithmic damping factor between 0.04 and 0.06.
    • 在由Burleigh Instruments,Inc。,N.Y.所调用的Inchworm Translator的类型的装置中,用于装置的轴的机电驱动器包括多个沿着驱动器堆叠的内部电极的电致伸缩层。 优选地,用于轴的每个夹持器或夹持器具有相似的结构,并且在其外周表面上包括一对外部电极。 更优选地,夹持器包括限定夹持器的圆柱形内周表面的电绝缘和耐磨性或电绝缘和减振膜。 膜优选分为多个膜部分。 电致伸缩层优选具有式(1-x)Pb(Mg1 / 3Nb2 / 3)O3.xPbTiO3的组成,其中x为约0.35。 电绝缘和耐磨膜可以是塑料或陶瓷材料。 电绝缘和减振膜可以是具有0.04和0.06之间的对数阻尼系数的铁素体组合物。
    • 9. 发明授权
    • Multilayer electrostrictive element which withstands repeated
application of pulses
    • 可承受重复施加脉冲的多层电致伸缩元件
    • US4523121A
    • 1985-06-11
    • US493583
    • 1983-05-11
    • Sadayuki TakahashiMasatomo YonezawaAtsushi OchiTakeshi YanoTakeshige HamatsukiIzumu Fukui
    • Sadayuki TakahashiMasatomo YonezawaAtsushi OchiTakeshi YanoTakeshige HamatsukiIzumu Fukui
    • H01L41/083H01L41/18
    • H01L41/0471H01L41/0472H01L41/0474H01L41/0477H01L41/0478
    • 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.
    • 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。
    • 10. 发明授权
    • Apparatus for X-ray analysis and apparatus for supplying X-rays
    • 用于X射线分析的装置和用于提供X射线的装置
    • US06823042B2
    • 2004-11-23
    • US10188398
    • 2002-07-02
    • Seiichi HayashiJimpei HaradaSadayuki TakahashiMasaru Kuribayashi
    • Seiichi HayashiJimpei HaradaSadayuki TakahashiMasaru Kuribayashi
    • G21K106
    • G01N23/00
    • Apparatus for X-ray analysis has a combination of a rotating target X-ray tube and a composite monochromator. The composite monochromator has a first and a second elliptic monochromators joined with each other side by side. Each of the elliptic monochromators has a first focal point at which an X-ray focal spot on a target of the X-ray tube is disposed. Each of the elliptic monochromators has a synthetic multilayered thin film whose d-spacing varies continuously along an elliptic-arc. The shortest distance between the X-ray focal spot and the composite monochromator is set to 40 to 100 mm. Under the shortest distance condition, the effective focal spot size on the target is set to 40 to 100 micrometers to obtain the maximum X-ray intensity on a sample to be analyzed.
    • 用于X射线分析的装置具有旋转靶X射线管和复合单色仪的组合。 复合单色仪具有彼此并排连接的第一和第二椭圆形单色器。 每个椭圆形单色器具有设置在X射线管的靶上的X射线焦斑的第一焦点。 每个椭圆单色仪具有合成的多层薄膜,其d-间距沿椭圆弧连续变化。 将X射线焦点与复合单色仪之间的最短距离设定为40〜100mm。 在最短距离条件下,目标上的有效焦斑尺寸设定为40〜100微米,以获得待分析样品上的最大X射线强度。