公开(公告)号：US20060202170A1

公开(公告)日：2006-09-14

申请号：US11370213

申请日：2006-03-07

申请人： Takaaki Koizumi ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

发明人： Takaaki Koizumi ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

IPC分类号： H01B1/12

CPC分类号： C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  C04B2235/3294 ,  C04B2235/449 ,  C04B2235/656 ,  C04B2235/77 ,  H01L21/31691 ,  H01L41/0973 ,  H01L41/1873 ,  H01L41/43

摘要： A piezoelectric/electrostrictive porcelain composition contains at least Nb, Ta, and one or more kinds of alkali metal elements, and a ratio (molar ratio) of Nb, Ta, and the alkali metal element is represented by a non-stoichiometric composition ratio. The piezoelectric/electrostrictive porcelain composition is capable of obtaining a piezoelectric/electrostrictive device which is dense and which is superior in crystallinity and which exhibits superior piezoelectric/electrostrictive characteristics even in a case where the composition is fired on lower-temperature conditions as compared with a conventional technology.

摘要翻译： 压电/电致伸缩瓷组合物至少含有Nb，Ta和一种或多种碱金属元素，Nb，Ta和碱金属元素的比例（摩尔比）由非化学计量组成比表示。 压电/电致伸缩瓷组合物能够获得致密的并且结晶度优异并且即使在组合物在低温条件下烧制的情况下也表现出优异的压电/电致伸缩特性的压电/电致伸缩装置，与 常规技术。

公开(公告)号：US07576477B2

公开(公告)日：2009-08-18

申请号：US11370213

申请日：2006-03-07

申请人： Takaaki Koizumi ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

发明人： Takaaki Koizumi ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

IPC分类号： H01L41/187 ,  H01L41/18 ,  C04B35/495

CPC分类号： C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  C04B2235/3294 ,  C04B2235/449 ,  C04B2235/656 ,  C04B2235/77 ,  H01L21/31691 ,  H01L41/0973 ,  H01L41/1873 ,  H01L41/43

摘要： A piezoelectric/electrostrictive porcelain composition is provided, including at least Nb, Ta, and one or more alkali metal elements, wherein a molar ratio of the Nb, Ta, and alkali metal element is represented by a non-stoichiometric composition ratio.

摘要翻译： 提供压电/电致伸缩瓷组合物，其至少包括Nb，Ta和一种或多种碱金属元素，其中Nb，Ta和碱金属元素的摩尔比以非化学计量组成比表示。

公开(公告)号：US08541102B2

公开(公告)日：2013-09-24

申请号：US12495830

申请日：2009-07-01

申请人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

发明人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC分类号： B32B5/16 ,  H01L41/18

CPC分类号： H01L41/1873 ,  C01G35/006 ,  C01P2004/03 ,  C01P2006/10 ,  C01P2006/40 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3241 ,  C04B2235/3251 ,  C04B2235/3267 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/449 ,  C04B2235/5445 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/661 ,  C04B2235/765 ,  C04B2235/768 ,  C04B2235/77 ,  C04B2235/783 ,  C04B2235/786 ,  C04B2235/79 ,  H01L41/43

摘要： Piezoelectric materials having improved electrical properties, and manufacturing methods of the same, are provided. In (Li, Na, K, Bi)(Nb, Ta)O3 based piezoelectric materials, the surface microstructures of sintered bodies include microscopic grains having grain diameters of less than 5 μm, intermediate grains having grain diameters of 5 μm or more and less than 15 μm, and coarse grains having grain diameters of 15 μm or more and 100 μm or less.

摘要翻译： 提供具有改善的电性能的压电材料及其制造方法。 在（Li，Na，K，Bi）（Nb，Ta）O 3基压电材料中，烧结体的表面微观结构包括粒径小于5μm的微晶粒，粒径为5μm以上的中间粒子 15μm以上的粗粒和15μm以上且100μm以下的粗粒。

公开(公告)号：US20100019187A1

公开(公告)日：2010-01-28

申请号：US12505609

申请日：2009-07-20

申请人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

发明人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC分类号： C04B35/01

CPC分类号： H01L41/187 ,  C01G33/00 ,  C01G33/006 ,  C01P2002/34 ,  C01P2002/52 ,  C01P2002/82 ,  C01P2006/32 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3251 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3267 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/528 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/768 ,  C04B2235/77 ,  C04B2235/79 ,  C04B2235/80 ,  C04B2235/9607

摘要： There is disclosed a piezoelectric/electrostrictive ceramics which is a sintered body having a structure where a matrix and a filler are brought into a composite, the matrix is made of an alkali niobate-based piezoelectric/electrostrictive material, which includes a large number of grains combined with one another, including a perovskite type oxide, which includes at least one element selected from the group consisting of Li, Na and K as an A site constituent element and Nb as a B site constituent element, as a main crystal phase, the filler is made of a material (with the proviso that an alkali niobate-based material is excluded) having a thermal expansion coefficient smaller than that of the alkali niobate-based piezoelectric/electrostrictive material, and the volume fraction of the filler with respect to the total volume of the matrix and the filler is 0.5 vol % or more and below 10 vol %.

摘要翻译： 公开了一种压电/电致伸缩陶瓷，其是具有基体和填料成复合体的结构的烧结体，该基体由碱铌酸盐系压电/电致伸缩材料构成，其包含大量的晶粒 包括钙钛矿型氧化物，其包含选自由Li，Na和K组成的组中的至少一种作为A位构成元素的Nb和作为B位构成元素的Nb作为主晶相， 填料由热膨胀系数小于碱铌酸酯类压电/电致伸缩材料的材料制成（条件是不含碱铌酸盐基材料），填料的体积分数相对于 基体和填料的总体积为0.5体积％以上且低于10体积％。

公开(公告)号：US07567021B2

公开(公告)日：2009-07-28

申请号：US11850710

申请日：2007-09-06

申请人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura ,  Shuichi Ozawa

发明人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura ,  Shuichi Ozawa

IPC分类号： H01L41/08

CPC分类号： H01L41/094 ,  H01L41/1873 ,  H01L41/257 ,  H01L41/314 ,  Y10T29/42

摘要： A monomorph type piezoelectric/electrostrictive device includes a piezoelectric/electrostrictive body, which is composed of a non-lead based piezoelectric/electrostrictive crystalline body containing at least Nb, Ta, and one or more types of alkali metal element, which has a cubic crystal structure at a temperature higher than the phase transition point and at least any one of tetragonal and orthorhombic crystal structures at a temperature lower than the phase transition point, and which is curved to a large extent by a polarization treatment to take on a curved shape at a temperature lower than the phase transition point without application of a voltage after the polarization treatment. In the polarization treatment, an electric field is increased at a speed of from 0.1 (kV/mm)/sec or more to 5 (kV/mm)/sec or less, with applying the maximum electric field of from 2 kV/mm or more to 1.0 kV/mm or less.

摘要翻译： 单晶型压电/电致伸缩器件包括压电/电致伸缩体，其由至少含有Nb，Ta和一种或多种碱金属元素的非铅基压电/电致伸缩晶体组成，所述碱金属元素具有立方晶体 在低于相变温度的温度下高于相变温度的晶体结构中的至少任一种，并且在相对于相变温度低的温度下至少具有四方晶体和正交晶体结构，并且通过极化处理在很大程度上弯曲以呈现弯曲形状 在极化处理后不施加电压的温度低于相变点。 在极化处理中，通过施加2kV / mm以下的最大电场，以0.1（kV / mm）/ sec以上的速度将电场增加至5（kV / mm）/ sec以下， 多达1.0kV / mm以下。

公开(公告)号：US20080074007A1

公开(公告)日：2008-03-27

申请号：US11850710

申请日：2007-09-06

申请人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura ,  Shuichi Ozawa

发明人： Ritsu Tanaka ,  Hirofumi Yamaguchi ,  Yukinobu Yura ,  Shuichi Ozawa

IPC分类号： H01L41/18 ,  H01L41/22

CPC分类号： H01L41/094 ,  H01L41/1873 ,  H01L41/257 ,  H01L41/314 ,  Y10T29/42

摘要： A monomorph type piezoelectric/electrostrictive device includes a piezoelectric/electrostrictive body, which is composed of a non-lead based piezoelectric/electrostrictive crystalline body containing at least Nb, Ta, and one or more types of alkali metal element, which has a cubic crystal structure at a temperature higher than the phase transition point and at least any one of tetragonal and orthorhombic crystal structures at a temperature lower than the phase transition point, and which is curved to a large extent by a polarization treatment to take on a curved shape at a temperature lower than the phase transition point without application of a voltage after the polarization treatment. In the polarization treatment, an electric field is increased at a speed of from 0.1 (kV/mm)/sec or more to 5 (kV/mm)/sec or less, with applying the maximum electric field of from 2 kV/mm or more to 1.0 kV/mm or less.

摘要翻译： 单晶型压电/电致伸缩器件包括压电/电致伸缩体，其由至少含有Nb，Ta和一种或多种碱金属元素的非铅基压电/电致伸缩晶体组成，所述碱金属元素具有立方晶体 在低于相变温度的温度下高于相变温度的晶体结构中的至少任一种，并且在相对于相变温度低的温度下至少具有四方晶体和正交晶体结构，并且通过极化处理在很大程度上弯曲以呈现弯曲形状 在极化处理后不施加电压的温度低于相变点。 在极化处理中，通过施加2kV / mm以下的最大电场，以0.1（kV / mm）/ sec以上的速度将电场增加至5（kV / mm）/ sec以下， 多达1.0kV / mm以下。

公开(公告)号：US08277680B2

公开(公告)日：2012-10-02

申请号：US12507199

申请日：2009-07-22

申请人： Ritsu Tanaka ,  Hirofumi Yamaguchi

发明人： Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC分类号： H01L41/187

CPC分类号： H01L41/43 ,  C01G35/006 ,  C01G45/006 ,  C01P2002/34 ,  C01P2004/82 ,  C04B35/495 ,  C04B35/62685 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/3294 ,  C04B2235/3298 ,  C04B2235/449 ,  C04B2235/768 ,  H01L41/0973 ,  H01L41/1873 ,  H01L41/273

摘要： A (Li, Na, K)(Nb, Ta)O3-based piezoelectric/electrostrictive ceramic composition having large electric field-induced distortion at the time of application of a high electric field is provided. A perovskite oxide is synthesized which contains Li (lithium), Na (sodium) and K (potassium) as A-site elements and contains at least Nb (niobium) and Sb (antimony) out of Nb, Ta (tantalum) and Sb as B-site elements, the ratio of the total number of atoms of the A-site elements to the total number of atoms of the B-site elements being larger than 1, and then a Bi (bismuth) compound is added and reacted. The amount of addition of the Bi compound with respect to 100 molar parts of the perovskite oxide is preferably not less than 0.02 molar part nor more than 0.1 molar part in terms of Bi atoms.

摘要翻译： 提供了在施加高电场时具有大的电场诱导失真的（Li，Na，K）（Nb，Ta）O 3系压电/电致伸缩陶瓷组合物。 合成了含有Li（锂），Na（钠）和K（钾）作为A位元素并且至少含有Nb，Ta（钽）和Sb中的Nb（铌）和Sb（锑）的钙钛矿氧化物， B位元素，A位元素的原子总数与B位元素的总原子数大于1的比例，然后添加Bi（铋）化合物并进行反应。 相对于100摩尔份的钙钛矿氧化物，Bi化合物的添加量优选为Bi原子计为0.02摩尔以上0.1摩尔以下。

公开(公告)号：US07816847B2

公开(公告)日：2010-10-19

申请号：US11180298

申请日：2005-07-13

申请人： Tsutomu Nanataki ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

发明人： Tsutomu Nanataki ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

IPC分类号： H01J1/30 ,  H01J1/35 ,  H01J1/308

CPC分类号： H01J1/312 ,  H01J9/025 ,  H01J29/481 ,  H01J2329/00

摘要： A dielectric device of higher performance is provided. An electron emitter, to which the dielectric device is applied is provided with: an emitter including a dielectric; and an upper electrode and a lower electrode to which drive voltage is applied in order to emit electrons. The emitter is formed by the aerosol deposition method or the sol impregnation method.

摘要翻译： 提供了更高性能的电介质器件。 施加电介质器件的电子发射体设置有：包括电介质的发射体; 以及为了发射电子而施加驱动电压的上电极和下电极。 发射体由气溶胶沉积法或溶胶浸渍法形成。

公开(公告)号：US20080302996A1

公开(公告)日：2008-12-11

申请号：US12036373

申请日：2008-02-25

申请人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

发明人： Yukinobu Yura ,  Hirofumi Yamaguchi ,  Ritsu Tanaka

IPC分类号： C04B35/495 ,  H01L41/187

CPC分类号： H01L41/1873 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/449 ,  C04B2235/72 ,  C04B2235/768 ,  C04B2235/79 ,  H01L41/0805 ,  H01L41/083 ,  H01L41/0973

摘要： A (Li, Na, K)(Nb, Ta)O3 based piezoelectric/electrostrictive porcelain composition obtained by adding a slight amount of a Mn compound to a perovskite type oxide containing Li, Na and K as A-site elements and contains at least Nb out of Nb and Ta as B-site elements, where a ratio of a total number of atoms of the A-site elements to a total number of atoms of the B-site elements is not smaller than 1. A composition of the perovskite type oxide as a principal component is represented by a general formula: {Liy(Na1-xKx)1-y}a(Nb1-zTaz)O3. The A/B ratio “a” preferably satisfies 1

摘要翻译： 通过向含有Li，Na和K的钙钛矿型氧化物中添加少量的Mn化合物作为A位元素而至少含有（Li，Na，K）（Nb，Ta）O 3的压电/电致伸缩瓷组合物 Nb中的Nb和Ta作为B位元素，其中A位元素的总原子数与B位元素的总原子数的比率不小于1.钙钛矿的组成 氧化物作为主要成分的通式为：{Liy（Na1-xKx）1-y} a（Nb1-zTaz）O3。 A / B比“a”优选满足1

公开(公告)号：US08193687B2

公开(公告)日：2012-06-05

申请号：US12508870

申请日：2009-07-24

申请人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

发明人： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC分类号： H01L41/187

CPC分类号： C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3241 ,  C04B2235/3267 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3289 ,  C04B2235/3294 ,  C04B2235/3298 ,  C04B2235/528 ,  C04B2235/5445 ,  C04B2235/656 ,  C04B2235/661 ,  C04B2235/662 ,  C04B2235/761 ,  C04B2235/762 ,  C04B2235/768 ,  C04B2235/783 ,  H01L41/083 ,  H01L41/0973 ,  H01L41/1873 ,  H01L41/273 ,  H01L41/314

摘要： An alkali niobate-based piezoelectric/electrostrictive ceramics sintered body including, as a main crystal phase, a perovskite type oxide containing at least one type of element selected from the group consisting of Li, Na and K as A site constituent elements and at least one type of element selected from the group consisting of Nb and Ta as B site constituent elements. The number of lattice-strained layers of the piezoelectric/electrostrictive ceramics sintered body is preferably small. A diffuse scattering intensity ratio, which is a ratio of an intensity of diffuse scattering by a lattice-strained layer present near a domain wall to a sum of an X-ray diffraction intensity of a first lattice plane and that of a second lattice plane different in interplanar spacing from the first lattice plane due to crystallographic symmetry reduction is preferably 0.5 or lower.

摘要翻译： 一种碱铌酸盐基压电/电致伸缩陶瓷烧结体，其包含作为主晶相的钙钛矿型氧化物，其含有选自Li，Na和K中的至少一种元素作为构成元素，并且至少一种 选自Nb和Ta作为B位构成元素的元素的类型。 压电/电致伸缩陶瓷烧结体的格子状应变层的数量较好。 扩散散射强度比，其是存在于畴壁附近的晶格应变层的散射强度与第一晶格面的X射线衍射强度与第二晶格面的X射线衍射强度之和的比率 由于结晶对称性降低，与第一晶格面的晶面间距优选为0.5以下。