公开(公告)号：US07893601B2

公开(公告)日：2011-02-22

申请号：US12267717

申请日：2008-11-10

Applicant: Kazuyuki Kaigawa ,  Hirofumi Yamaguchi

Inventor： Kazuyuki Kaigawa ,  Hirofumi Yamaguchi

IPC: H01L41/187

CPC classification number: C04B35/495 ,  C01G33/006 ,  C01G35/006 ,  C01P2002/34 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2006/10 ,  C01P2006/40 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3241 ,  C04B2235/3251 ,  C04B2235/3267 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/449 ,  C04B2235/5445 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/661 ,  C04B2235/768 ,  C04B2235/77 ,  C04B2235/783 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/79 ,  H01L41/1873 ,  H01L41/43 ,  Y10T29/42

Abstract: Manufacturing sintered bodies having microstructures including microscopic grains having a grain diameter of less than 5 μm, intermediate grains having a grain diameter of 5 μm or more and less than 15 μm, and coarse grains having a grain diameter of 15 μm or more and 100 μm or less enables to obtain high electric characteristics. Chemical compounds including metal elements are mixed so that the ratio of the elements is a composition expressed by (Li, Na, K)(Nb, Ta)O3, the mixture is calcined and crushed to obtain calcined/crushed powder. The powder is sintered in a constant temperature keeping process wherein temperature is kept constantly at a predetermined temperature within a range from 800 to 900° C. for a predetermined period of time in a heating process, and then the powder is further sintered by raising temperature to firing temperature, thereby the piezoelectric materials having superior electric characteristics are manufactured.

Abstract translation: 制造具有微观结构的烧结体，其具有粒径小于5μm的微细晶粒，粒径为5μm以上且小于15μm的中间晶粒，以及粒径为15μm以上且100μm以下的粗晶粒 以下能够获得高电特性。 将包含金属元素的化合物混合，使元素的比例为由（Li，Na，K）（Nb，Ta）O 3表示的组成，将混合物煅烧并粉碎以获得煅烧/粉碎的粉末。 将该粉末在恒温保持法中烧结，其中在加热过程中将温度恒定地保持在800-900℃的预定温度下一段预定的时间，然后通过升高温度进一步烧结粉末 烧成温度，由此制造具有优异的电特性的压电材料。

公开(公告)号：US20100021728A1

公开(公告)日：2010-01-28

申请号：US12495830

申请日：2009-07-01

Applicant: Kazuyuki KAIGAWA ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

Inventor： Kazuyuki KAIGAWA ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC: B32B5/16 ,  H01L41/18 ,  C04B35/64

CPC classification number: 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

Abstract: Disclosed are piezoelectric materials in which electrical properties are improved, and manufacturing methods of the same. In (Li, Na, K, Bi)(Nb, Ta)O3 based piezoelectric materials, the surface microstructures of sintered bodies are constituted of 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.

Abstract translation: 公开了电气性能得到改善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，烧结体的表面微结构由粒径小于5μm的微观晶粒构成，粒径为5μm以上的中间晶粒 小于15μm，粒径为15μm以上且100μm以下的粗粒。

公开(公告)号：US20100019624A1

公开(公告)日：2010-01-28

申请号：US12508870

申请日：2009-07-24

Applicant: Kazuyuki KAIGAWA ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

Inventor： Kazuyuki KAIGAWA ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC: H01L41/187 ,  G01N23/20

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08541102B2

公开(公告)日：2013-09-24

申请号：US12495830

申请日：2009-07-01

Applicant: Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

Inventor： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC: B32B5/16 ,  H01L41/18

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US08282854B2

公开(公告)日：2012-10-09

申请号：US12343689

申请日：2008-12-24

Applicant: Kazuyuki Kaigawa ,  Hirofumi Yamaguchi

Inventor： Kazuyuki Kaigawa ,  Hirofumi Yamaguchi

IPC: C09B35/00 ,  H01L41/16

CPC classification number: H01L41/1873 ,  C04B35/495 ,  C04B35/6262 ,  C04B35/62645 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3241 ,  C04B2235/3255 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3294 ,  C04B2235/5445 ,  C04B2235/761 ,  C04B2235/765 ,  C04B2235/77 ,  C04B2235/782 ,  C04B2235/786 ,  H01L41/43

Abstract: A (Li, Na, K)(Nb, Ta, Sb)O3 based piezoelectric material is a sintered body having a surface microstructure that comprises microscopic grains having a grain diameter of less than 5 μm, intermediate grains having a grain diameter of 5 μm or more and less than 15 μm, and coarse grains having a grain diameter of 15 μm or more and 50 μm or less. The amount of coarse grains is 3% or more in a share of grains in terms of area. The piezoelectric material can be manufactured by mixing metal-containing compounds so as to give the above-mentioned formulation, calcining the mixture and then crushing the resultant to obtain a calcined/crushed powder, then keeping temperature constantly at a temperature within a range from 800 to 950° C. for a predetermined period of time in a constant temperature keeping process, and raising temperature to firing temperature for sintering.

Abstract translation: A（Li，Na，K）（Nb，Ta，Sb）O 3系压电材料是具有包含粒径小于5μm的微细晶粒的表面微结构的烧结体，粒径为5μm的中间晶粒 以上且小于15μm的粒子，以及粒径为15μm以上且50μm以下的粗晶粒。 在谷物的面积份额中，粗粮的量为3％以上。 可以通过混合含金属化合物来制造压电材料，以得到上述配方，煅烧混合物，然后粉碎所得物，得到煅烧/粉碎的粉末，然后将温度恒定在800℃以下的温度 在恒温保持工序中，将其升温至烧成温度950℃。

公开(公告)号：US08124047B2

公开(公告)日：2012-02-28

申请号：US11958636

申请日：2007-12-18

Applicant: Kazuyuki Kaigawa ,  Shuichi Ozawa ,  Hirofumi Yamaguchi

Inventor： Kazuyuki Kaigawa ,  Shuichi Ozawa ,  Hirofumi Yamaguchi

IPC: C01G33/00 ,  C04B35/468

CPC classification number: C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  H01L41/1873 ,  H01L41/43

Abstract: A method for manufacturing (Li, Na, K)(Nb, Ta)O3 type piezoelectric material having an improved relative dielectric constant and an electric-field-induced strain is provided. The method is a process in which a formed body of powder particles constituted of a composition of (Li, Na, K)(Nb, Ta)O3 is fired to produce the (Li, Na, K)(Nb, Ta)O3 type piezoelectric material, and a constant temperature is kept in a range of 850 to 1000° C. for a constant time before heating to a firing temperature.

Abstract translation: 提供了具有改善的相对介电常数和电场诱导应变的（Li，Na，K）（Nb，Ta）O3型压电材料的制造方法。 该方法是将由（Li，Na，K）（Nb，Ta）O 3的组成构成的粉末粒子的成形体烧成以制造（Li，Na，K）（Nb，Ta）O 3型 压电材料，并将恒温恒定时间保持在850〜1000℃的范围内，再加热至烧成温度。

公开(公告)号：US20100019187A1

公开(公告)日：2010-01-28

申请号：US12505609

申请日：2009-07-20

Applicant: Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

Inventor： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC: C04B35/01

CPC classification number: 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

Abstract: 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 %.

Abstract translation: 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：US20080152581A1

公开(公告)日：2008-06-26

申请号：US11958636

申请日：2007-12-18

Applicant: Kazuyuki Kaigawa ,  Shuichi Ozawa ,  Hirofumi Yamaguchi

Inventor： Kazuyuki Kaigawa ,  Shuichi Ozawa ,  Hirofumi Yamaguchi

IPC: C01G33/00

CPC classification number: C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3251 ,  H01L41/1873 ,  H01L41/43

Abstract: There is disclosed a method for manufacturing (Li, Na, K)(Nb, Ta)O3 type piezoelectric material in which a relative dielectric constant and an electric-field-induced strain can be improved. The method is a process in which a formed body of powder particles constituted of a composition of (Li, Na, K) (Nb, Ta)O3 is fired to produce the (Li, Na, K) (Nb, Ta)O3 type piezoelectric material, and a constant temperature is kept in a range of 850 to 1000° C. for a constant time in a heating process to a firing temperature.

Abstract translation: 公开了可以提高相对介电常数和电场诱导应变的（Li，Na，K）（Nb，Ta）O 3 3型压电材料的制造方法。 该方法是将由（Li，Na，K）（Nb，Ta）O 3 3组成的粉末颗粒的成形体烧成以制造（Li，Na，K ）（Nb，Ta）O 3型压电材料，并且在加热过程中将恒温恒定时间保持在850至1000℃的范围内至烧制温度。

公开(公告)号：US08193687B2

公开(公告)日：2012-06-05

申请号：US12508870

申请日：2009-07-24

Applicant: Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

Inventor： Kazuyuki Kaigawa ,  Ritsu Tanaka ,  Hirofumi Yamaguchi

IPC: H01L41/187

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090212254A1

公开(公告)日：2009-08-27

申请号：US12343689

申请日：2008-12-24

Applicant: Kazuyuki KAIGAWA ,  Hirofumi Yamaguchi

Inventor： Kazuyuki KAIGAWA ,  Hirofumi Yamaguchi

IPC: H01L41/18

CPC classification number: H01L41/1873 ,  C04B35/495 ,  C04B35/6262 ,  C04B35/62645 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3241 ,  C04B2235/3255 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3294 ,  C04B2235/5445 ,  C04B2235/761 ,  C04B2235/765 ,  C04B2235/77 ,  C04B2235/782 ,  C04B2235/786 ,  H01L41/43

Abstract: The present inventive (Li, Na, K) (Nb, Ta, Sb) O3 based piezoelectric material has a sintered body having a surface microstructure comprises microscopic grains having a grain diameter of less than 5 μm, intermediate grains having a grain diameter of 5 μm or more and less than 15 μm, and coarse grains having a grain diameter of 15 μm or more and 50 μm or less, wherein the amount of coarse grains is 3% or more in a share of grains in terms of area. The present piezoelectric material can be manufactured by mixing metal-containing compounds so as to give the above-mentioned formulation, calcining the mixture and then crushing the resultant to obtain a calcined/crushed powder, then keeping temperature constantly at a temperature within a range from 800 to 950° C. for a predetermined period of time in a constant temperature keeping process, and raising temperature to firing temperature for sintering.

Abstract translation: 本发明的（Li，Na，K）（Nb，Ta，Sb）O 3系压电材料具有具有表面微结构的烧结体，其包含粒径小于5μm的微细晶粒，粒径为5μm的中间粒子 以上且小于15μm的粒子，以及粒径为15μm以上且50μm以下的粗晶粒，其中粗粒的面积的面积份额为3％以上。 本发明的压电材料可以通过混合含金属化合物来制造，以得到上述配方，煅烧混合物，然后粉碎所得物，得到煅烧/粉碎的粉末，然后将温度恒定保持在从 800〜950℃保温一定时间，升温至烧成温度。