公开(公告)号：US09308553B2

公开(公告)日：2016-04-12

申请号：US13897730

申请日：2013-05-20

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Yasunari Miwa ,  Shinichiro Kawada ,  Masahiko Kimura

IPC: H01L41/22 ,  H01L41/187 ,  C04B33/00 ,  B05D5/12 ,  C04B35/493 ,  C04B35/626 ,  C04B35/634 ,  H01L41/273

CPC classification number: B05D5/12 ,  C04B35/493 ,  C04B35/6263 ,  C04B35/63416 ,  C04B35/63424 ,  C04B2235/3251 ,  C04B2235/3279 ,  C04B2235/605 ,  C04B2235/768 ,  C04B2235/787 ,  H01L41/187 ,  H01L41/1876 ,  H01L41/273

Abstract: An additive that contains an emulsion binder resin substantially free of non-emulsion binder resin, such as an emulsion acrylic resin, is mixed into a ceramic raw material powder containing, as its main constituent, a perovskite-type compound to form a ceramic slurry. Then, an orientational ceramic is prepared by subjecting the slurry to a forming process while simultaneously or sequentially applying a magnetic field and drying the slurry. An orientational ceramic, even formed from a substance which has small magnetic anisotropy, such as PZT, is obtained.

Abstract translation: 将含有基本上不含非乳液粘合剂树脂的乳液粘合剂树脂（如乳液丙烯酸树脂）的添加剂混合到以钙钛矿型化合物为主要成分的陶瓷原料粉末中，形成陶瓷浆料。 然后，通过使浆料进行成形过程同时或顺序施加磁场并干燥浆料来制备定向陶瓷。 获得了甚至由具有小的各向异性的物质形成的定向陶瓷，例如PZT。

公开(公告)号：US20160064646A1

公开(公告)日：2016-03-03

申请号：US14938166

申请日：2015-11-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinichiro Kawada ,  Shoichiro Suzuki ,  Hideki Ishii ,  Hiroyuki Hayashi ,  Suetake Omiya ,  Takashi Oyama

IPC: H01L41/187 ,  H01L41/273 ,  C04B35/626 ,  H01L41/083 ,  C04B35/495 ,  C04B35/64

CPC classification number: H01L41/1873 ,  C04B35/495 ,  C04B35/62605 ,  C04B35/62655 ,  C04B35/64 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3208 ,  C04B2235/3232 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3293 ,  C04B2235/6025 ,  C04B2235/768 ,  H01L41/083 ,  H01L41/273 ,  H03H9/02543 ,  H03H9/178

Abstract: A piezoelectric ceramic that contains an alkali niobate compound as its main ingredient. The alkali niobate compound has a perovskite crystal structure represented by AmBO3 and contains an alkali metal. There exists Sn in part of site A, and Zr in part of site B. A radial distribution function obtained from a K-edge X-ray absorption spectrum of Sn has a first peak intensity P1 at a first distance from a Sn atom and a second peak intensity P2 at a second distance from the Sn atom. The second distance is greater than the first distance, and the peak intensity ratio P1/P2 is 2.7 or less.

Abstract translation: 一种含有铌酸碱化合物作为主要成分的压电陶瓷。 碱铌酸酯化合物具有由AmBO 3表示的钙钛矿晶体结构，并含有碱金属。 在部分A中存在Sn，部分位置B存在Zr。从Sn的K边X射线吸收光谱获得的径向分布函数具有与Sn原子相距第一距离的第一峰强度P1和 与Sn原子相距第二距离的第二峰强度P2。 第二距离大于第一距离，峰值强度比P1 / P2为2.7以下。

公开(公告)号：US10193054B2

公开(公告)日：2019-01-29

申请号：US14938166

申请日：2015-11-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinichiro Kawada ,  Shoichiro Suzuki ,  Hideki Ishii ,  Hiroyuki Hayashi ,  Suetake Omiya ,  Takashi Oyama

IPC: H01L41/187 ,  H01L41/273 ,  H03H9/02 ,  H03H9/17 ,  H01L41/083 ,  C04B35/495 ,  C04B35/626 ,  C04B35/64

Abstract: A piezoelectric ceramic that contains an alkali niobate compound as its main ingredient. The alkali niobate compound has a perovskite crystal structure represented by AmBO3 and contains an alkali metal. There exists Sn in part of site A, and Zr in part of site B. A radial distribution function obtained from a K-edge X-ray absorption spectrum of Sn has a first peak intensity P1 at a first distance from a Sn atom and a second peak intensity P2 at a second distance from the Sn atom. The second distance is greater than the first distance, and the peak intensity ratio P1/P2 is 2.7 or less.

公开(公告)号：US20140009037A1

公开(公告)日：2014-01-09

申请号：US13897730

申请日：2013-05-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yasunari Miwa ,  Shinichiro Kawada ,  Masahiko Kimura

IPC: B05D5/12 ,  H01L41/187

CPC classification number: B05D5/12 ,  C04B35/493 ,  C04B35/6263 ,  C04B35/63416 ,  C04B35/63424 ,  C04B2235/3251 ,  C04B2235/3279 ,  C04B2235/605 ,  C04B2235/768 ,  C04B2235/787 ,  H01L41/187 ,  H01L41/1876 ,  H01L41/273

Abstract: An additive that contains an emulsion binder resin substantially free of non-emulsion binder resin, such as an emulsion acrylic resin, is mixed into a ceramic raw material powder containing, as its main constituent, a perovskite-type compound to form a ceramic slurry. Then, an orientational ceramic is prepared by subjecting the slurry to a forming process while simultaneously or sequentially applying a magnetic field and drying the slurry. An orientational ceramic, even formed from a substance which has small magnetic anisotropy, such as PZT, is obtained.

Abstract translation: 将含有基本上不含非乳液粘合剂树脂的乳液粘合剂树脂（如乳液丙烯酸树脂）的添加剂混合到以钙钛矿型化合物为主要成分的陶瓷原料粉末中，形成陶瓷浆料。 然后，通过使浆料进行成形过程同时或顺序施加磁场并干燥浆料来制备定向陶瓷。 获得了甚至由具有小的各向异性的物质形成的定向陶瓷，例如PZT。

公开(公告)号：US20130164533A1

公开(公告)日：2013-06-27

申请号：US13771895

申请日：2013-02-20

Applicant: National Institute for Materials Science ,  MURATA MANUFACTURING CO., LTD.

Inventor： Tohru Suzuki ,  Tetsuo Uchikoshi ,  Yoshio Sakka ,  Yasunari Miwa ,  Shinichiro Kawada ,  Masahiko Kimura

IPC: H01L41/187 ,  H01L41/333

CPC classification number: C04B35/475 ,  B28B1/30 ,  B28B5/027 ,  C04B35/465 ,  C04B35/495 ,  C04B2235/3208 ,  C04B2235/3232 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3298 ,  C04B2235/6027 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/787 ,  H01L41/1878 ,  H01L41/333 ,  H01L41/43 ,  Y10T428/2982

Abstract: A piezoelectric ceramic having excellent electrical characteristics, and in which all of three crystallographic axes are oriented is obtained by slip cast or sheet forming a ceramic slurry containing plate-shaped ceramic particles in magnetic field. The degree of orientation of a first axis (for example, a c axis) calculated with the Lotgering method based on an X-ray diffraction (XRD) pattern in a prescribed cross-section of this piezoelectric ceramic is not less than 0.30. With a cross-section where the degree of orientation of the first axis indicates a maximum value being defined as a reference plane, the degree of orientation of a second axis (for example, an a axis) calculated with the Lotgering method based on an X-ray diffraction pattern in a cross-section orthogonal to this reference plane is not less than 0.20. The degree of orientation of the second axis is represented by a value in such a cross-section that the degree of orientation of the second axis attains to a maximum value, among cross-sections orthogonal to the reference plane.

Abstract translation: 通过在磁场中形成含有板状陶瓷颗粒的陶​​瓷浆料的滑移或片材获得具有优异电特性，并且其中所有三个结晶轴取向的压电陶瓷。 以该压电陶瓷的规定截面为基准的X射线衍射（XRD）图案，利用浮法法计算的第一轴（例如c轴）的取向度为0.30以上。 以第一轴的取向度表示被定义为基准面的最大值的横截面，使用基于X的Lotkering方法计算出的第二轴（例如a轴）的取向度 与该参考平面正交的横截面中的射线衍射图案不小于0.20。 在与参考平面正交的横截面中，第二轴的取向度由在第二轴的取向度达到最大值的横截面中的值表示。

公开(公告)号：US10014463B2

公开(公告)日：2018-07-03

申请号：US15016365

申请日：2016-02-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hideki Ishii ,  Shinichiro Kawada ,  Hiroyuki Hayashi ,  Tadashi Okuzawa ,  Shoichiro Suzuki

IPC: H01L41/187 ,  H01L41/43 ,  H01L41/047 ,  H01L41/273 ,  C04B35/495 ,  H01L41/277

CPC classification number: H01L41/1873 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3286 ,  C04B2235/6025 ,  C04B2235/768 ,  H01L41/0471 ,  H01L41/0477 ,  H01L41/273 ,  H01L41/277 ,  H01L41/43

Abstract: A multilayer sintered body having alternately stacked Ni-based inner electrodes and piezoelectric ceramic layers. The piezoelectric ceramic layers contain a main ingredient of a perovskite compound containing Nb, K, Na, and Li, at least one element M1 selected from Nd and Dy, and at least one element M2 selected from Ga and Al. The element M2 content is 0.071 parts by mole or less per 1 part by mole of the Nb in a solution obtained through a dissolution process. This multilayer piezoelectric ceramic electronic component is manufactured through the cofiring of conductive films as a precursor of the inner electrodes and ceramic green sheets as a precursor of the piezoelectric ceramic layers in a reducing atmosphere in which the oxidation of Ni is inhibited.

公开(公告)号：US20160155929A1

公开(公告)日：2016-06-02

申请号：US15016365

申请日：2016-02-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： HIDEKI ISHII ,  Shinichiro Kawada ,  Hiroyuki Hayashi ,  Tadashi Okuzawa ,  Shoichiro Suzuki

IPC: H01L41/187 ,  H01L41/047 ,  H01L41/277 ,  H01L41/273

CPC classification number: H01L41/1873 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3286 ,  C04B2235/6025 ,  C04B2235/768 ,  H01L41/0471 ,  H01L41/0477 ,  H01L41/273 ,  H01L41/277 ,  H01L41/43

Abstract: A multilayer sintered body having alternately stacked Ni-based inner electrodes and piezoelectric ceramic layers. The piezoelectric ceramic layers contain a main ingredient of a perovskite compound containing Nb, K, Na, and Li, at least one element M1 selected from Nd and Dy, and at least one element M2 selected from Ga and Al. The element M2 content is 0.071 parts by mole or less per 1 part by mole of the Nb in a solution obtained through a dissolution process. This multilayer piezoelectric ceramic electronic component is manufactured through the cofiring of conductive films as a precursor of the inner electrodes and ceramic green sheets as a precursor of the piezoelectric ceramic layers in a reducing atmosphere in which the oxidation of Ni is inhibited.

Abstract translation: 具有交替堆叠的Ni基内电极和压电陶瓷层的多层烧结体。 压电陶瓷层含有含有Nb，K，Na和Li的至少一种选自Nd和Dy的元素M1和选自Ga和Al的至少一种元素M2的钙钛矿化合物的主要成分。 元素M2含量相对于通过溶解过程获得的溶液中的Nb每1摩尔份为0.071摩尔份数以下。 这种多层压电陶瓷电子部件是通过在作为内部电极的前驱体的导电膜和作为压电陶瓷层的前体的陶瓷生片中共烧而制造的，其还原气氛中抑制了Ni的氧化。

公开(公告)号：USRE45981E1

公开(公告)日：2016-04-19

申请号：US14104812

申请日：2013-12-12

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Shinichiro Kawada

IPC: H01L41/08 ,  H01L41/273 ,  C04B35/495 ,  H01L41/047 ,  H01L41/083 ,  H01L41/187

CPC classification number: H01L41/0471 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3248 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3286 ,  C04B2235/3293 ,  C04B2235/3294 ,  C04B2235/6025 ,  C04B2235/652 ,  C04B2235/768 ,  C04B2235/85 ,  H01L41/0477 ,  H01L41/083 ,  H01L41/1873 ,  H01L41/273

Abstract: A piezoelectric ceramic includes a main constituent represented by the general formula {(1−x) (K1-a-bNaaLib)(Nb1-cTac)O3}−xM2M4O3}, and as accessory constituents, 2α mol of Na, (α+β) mole of an M4′ element, and γ mol of Mn with respect to 100 mol of the main constituent, where 0.1≦α≦β, 1≦α+β≦10, and 0≦γ≦10, M2 is Ca, Ba, and/or Sr, the M4 element and the M4′ element are Zr, Sn, and/or Hf, 0≦x≦0.06, 0≦a≦0.9, 0≦b≦0.1, and 0≦c≦0.3. Even in the case of using Ni as the main constituent in an internal electrode material of a piezoelectric element and carrying out co-firing, favorable piezoelectric properties can be obtained without defective polarization.

Abstract translation: 压电陶瓷包括由通式{（1-x）（K1-a-bNaaLib）（Nb1-cTac）O3} -xM2M4O3}表示的主要成分，作为附加成分，将Na 2（α+＆bgr 其中，0.1≤nlE;α＆nlE;＆bgr; 1＆nlE;α+＆bgr;＆nlE; 10和0＆nlE;γ＆nlE; 10， M2是Ca，Ba和/或Sr，M4元素和M4'元素是Zr，Sn和/或Hf，0和nlE; x和nlE; 0.06,0和nlE; a＆nlE; 0.9,0和nlE; b＆nlE; 0.1,0和nlE; c＆nlE; 0.3。 即使在使用Ni作为压电元件的内部电极材料中的主要成分并进行共烧的情况下，也可以获得良好的压电特性而没有有缺陷的极化。

公开(公告)号：US20160049578A1

公开(公告)日：2016-02-18

申请号：US14921036

申请日：2015-10-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yasunari Miwa ,  Shinichiro Kawada

IPC: H01L41/187 ,  H01L41/047 ,  H01L41/37 ,  C04B35/472

CPC classification number: H01L41/187 ,  C01G53/006 ,  C01P2002/34 ,  C01P2002/72 ,  C04B35/472 ,  C04B35/491 ,  C04B35/62218 ,  C04B2235/3232 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3279 ,  C04B2235/3296 ,  C04B2235/6025 ,  C04B2235/605 ,  C04B2235/6567 ,  C04B2235/768 ,  C04B2235/787 ,  H01L41/0471 ,  H01L41/0472 ,  H01L41/0986 ,  H01L41/1876 ,  H01L41/37 ,  H01L41/43

Abstract: A piezoelectric ceramic base body that has a polyhedral shape having shape anisotropy, such as a rectangular parallelepiped shape, and which has opposed faces on which external electrodes are formed. The opposed faces have first sides and second sides. Between the first side and the second side of one of the opposed faces, a width dimension of the surface in a direction orthogonal to the first side and the second side is larger than a length dimension of each of the first and the second sides. The crystal axis is {100} oriented in a direction parallel to the first and the second sides, and a degree of orientation by a Lotgering method is 0.4 or more.

Abstract translation: 一种压电陶瓷基体，其具有形状各向异性的多面体形状，例如长方体形状，并且具有形成有外部电极的相对面。 相对的面具有第一面和第二面。 在一个相对面的第一侧和第二侧之间，与第一侧和第二侧正交的方向上的表面的宽度尺寸大于第一和第二侧中的每一个的长度尺寸。 晶体轴线在与第一和第二侧平行的方向上为{100}，并且通过浮法的取向度为0.4以上。

公开(公告)号：US20140271447A1

公开(公告)日：2014-09-18

申请号：US14291515

申请日：2014-05-30

Applicant: MURATA MANUFACTURING CO., LTD. ,  National Institute for Materials Science

Inventor： Yasunari Miwa ,  Shinichiro Kawada ,  Masahiko Kimura ,  Tohru Zuzuki ,  Tetsuo Uchikoshi ,  Yoshio Sakka

IPC: H01L41/187 ,  H01L41/43

CPC classification number: H01L41/1876 ,  C01G23/003 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2006/10 ,  C04B35/491 ,  C04B35/493 ,  C04B35/6261 ,  C04B35/62645 ,  C04B35/653 ,  C04B2235/3201 ,  C04B2235/3251 ,  C04B2235/3255 ,  C04B2235/3279 ,  C04B2235/444 ,  C04B2235/5204 ,  C04B2235/528 ,  C04B2235/768 ,  C04B2235/77 ,  C04B2235/787 ,  H01L41/43

Abstract: Piezoelectric oriented ceramics containing a Pb(Ti, Zr)O3-based compound having a high degree of orientation not lower than 0.64, which was calculated with the Lotgering method based on an X-ray diffraction pattern in a prescribed cross-section thereof, and having a sintered density not lower than 85% of a theoretical density.

Abstract translation: 含有具有高取向度的不高于0.64的Pb（Ti，Zr）O 3系化合物的压电取向陶瓷，其以在规定横截面为基础的X射线衍射图案的Lotkering方法计算，以及 其烧结密度不低于理论密度的85％。