公开(公告)号：US06769160B2

公开(公告)日：2004-08-03

申请号：US10087767

申请日：2002-03-05

申请人： Shoichi Higuchi ,  Tatsuo Kunishi ,  Yukio Hamaji

发明人： Shoichi Higuchi ,  Tatsuo Kunishi ,  Yukio Hamaji

IPC分类号： H01G700

CPC分类号： H01G4/232 ,  H01C1/148 ,  H01C17/283 ,  Y10T29/417 ,  Y10T29/435 ,  Y10T29/49098 ,  Y10T29/49144 ,  Y10T428/12708

摘要： A process for manufacturing an electronic part having a ceramic body and an outer electrode form on the surface of the body, the outer electrode including a plurality of layers and having a Sn plating layer as the outermost layer. The Sn plating layer having an average crystal grain size of about 1 &mgr;m or less is formed on a Ni or Ni alloy by electroplating in a plating bath having a pH of about 3 to 10.

摘要翻译： 一种制造在本体表面上具有陶瓷体和外部电极的电子部件的制造方法，其特征在于，所述外部电极具有多层，并具有Sn镀层作为最外层。 通过在pH为约3〜10的电镀浴中电镀，在Ni或Ni合金上形成平均结晶粒径为1μm以下的Sn镀层。

公开(公告)号：US06373683B1

公开(公告)日：2002-04-16

申请号：US09680610

申请日：2000-10-06

申请人： Shoichi Higuchi ,  Tatsuo Kunishi ,  Yukio Hamaji

发明人： Shoichi Higuchi ,  Tatsuo Kunishi ,  Yukio Hamaji

IPC分类号： H01G4008

CPC分类号： H01G4/232 ,  H01C1/148 ,  H01C17/283 ,  Y10T29/417 ,  Y10T29/435 ,  Y10T29/49098 ,  Y10T29/49144 ,  Y10T428/12708

摘要： An electronic part includes a body and an outer electrode formed on the surface of the body, the outer electrode comprising a plurality of layers and having a Sn plating layer as the outermost layer. The Sn plating layer has an average crystal grain size of about 1 &mgr;m or less.

摘要翻译： 电子部件包括形成在主体表面上的主体和外部电极，外部电极包括多个层，并具有Sn镀层作为最外层。 Sn镀层的平均结晶粒径为1μm以下。

公开(公告)号：US5853515A

公开(公告)日：1998-12-29

申请号：US622068

申请日：1996-03-26

申请人： Harunobu Sano ,  Yukio Hamaji

发明人： Harunobu Sano ,  Yukio Hamaji

IPC分类号： H01G4/12 ,  H01G4/30 ,  B32B31/26 ,  H01G4/008

CPC分类号： H01G4/1227 ,  H01G4/30 ,  Y10T29/435

摘要： A multilayer ceramic capacitor and a process for producing the same, which comprises dielectric ceramic layers, internal electrodes disposed between the dielectric ceramic layers, and an external electrode connected to the internal electrodes, the dielectric ceramic layers comprising barium titanate, a bismuth compound, and an anti-reducing agent, the internal electrodes comprising nickel or a nickel alloy.

摘要翻译： 一种多层陶瓷电容器及其制造方法，其包括电介质陶瓷层，设置在介电陶瓷层之间的内部电极和连接到内部电极的外部电极，所述介电陶瓷层包括钛酸钡，铋化合物和 抗还原剂，内部电极包括镍或镍合金。

公开(公告)号：US5801111A

公开(公告)日：1998-09-01

申请号：US785783

申请日：1997-01-21

申请人： Hiroyuki Wada ,  Harunobu Sano ,  Norihiko Sakamoto ,  Yukio Hamaji

发明人： Hiroyuki Wada ,  Harunobu Sano ,  Norihiko Sakamoto ,  Yukio Hamaji

IPC分类号： C04B35/00 ,  C04B35/46 ,  C04B35/468 ,  C04B35/495 ,  H01B3/12 ,  H01G4/12 ,  C04B35/462 ,  H01G4/10 ,  H01G7/00

CPC分类号： C04B35/468 ,  C04B35/495 ,  H01G4/1227 ,  H01G4/1254

摘要： Disclosed herein is a dielectric ceramics composition which comprises 100 moles of a primary component being a barium titanate (containing less than about 0.02 wt % of alkali metal oxide as an impurity) as expressed by the compositional formula: (1-.alpha.-.beta.-.gamma.){BaO}.sub.m.TiO.sub.2 +.alpha.M.sub.2 O.sub.3 +.beta.Re.sub.2 O.sub.3 +.gamma.(Mn.sub.1-x-y Ni.sub.x Co.sub.y)O (where M.sub.2 O.sub.3 denotes Sc.sub.2 O.sub.3 or Y.sub.2 O.sub.3 or both, Re.sub.2 O.sub.3 denotes Sm.sub.2 O.sub.3 or Eu.sub.2 O.sub.3 or both, 0.0025.ltoreq..alpha.+.beta..ltoreq.0.025, 0

摘要翻译： 本文公开了一种电介质陶瓷组合物，其包含100摩尔的主要组分，其为组成式表示的钛酸钡（含有少于约0.02重量％的碱金属氧化物作为杂质）的主要组分：（1-α-β-γ ）{BaO} m.TiO 2 +αM 2 O 3 +βRe 2 O 3 +γ（Mn1-x-yNixCoy）O（其中M2O3表示Sc2O3或Y2O3或两者，Re2O3表示Sm2O3或Eu2O3或两者，0.0025 < 0 <β=0.0075,0.0025≤γ≤0.05，γ/（α+β）4，0

公开(公告)号：US5733832A

公开(公告)日：1998-03-31

申请号：US790772

申请日：1997-01-27

申请人： Mitsutoshi Kawamoto ,  Yukio Hamaji

发明人： Mitsutoshi Kawamoto ,  Yukio Hamaji

IPC分类号： C04B35/00 ,  C04B35/46 ,  C04B35/499 ,  H01B3/12 ,  H01G4/12

CPC分类号： C04B35/499 ,  H01G4/1254

摘要： A dielectric ceramic composition composed mainly of lead magnesium-niobate �Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 !, strontium titanate �SrTiO.sub.3 !, and lead titanate �PbTiO.sub.3 !, characterized in that the molar ratio of said three major components is defined by �Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 !.sub.x .multidot.�SrTiO.sub.3 !.sub.y .multidot.�PbTiO.sub.3 !.sub.z (where x+y+z=100 parts by mole, and each value of x, y, and z is on lines or within the area enclosed by lines passing through four points A (72, 10, 18), B (76, 5, 19), C (57, 5, 38), and D (48, 20, 32) in a triangular composition diagrams), and said three major components are supplemented by (Pb.sub.1-x Ba.sub.x) (Cu.sub.1/2 W.sub.1/2)O.sub.3 (where 0.ltoreq.x.ltoreq.1) in an amount less than about 5 parts by mole (excluding 0 part by mole) for 100 parts by mole of said major components. This dielectric ceramic composition can be sintered at low temperatures and has a high permittivity and a high mechanical strength.

摘要翻译： 主要由铅铌酸镁[Pb（Mg + E，fra 1/3 + EE Nb + E，fra 2/3 + EE）O 3]，钛酸锶[SrTiO 3]和钛酸铅[PbTiO 3] 其特征在于所述三种主要成分的摩尔比由[Pb（Mg + E，fra 1/3 + EE Nb + E，fra 2/3 + EE）O 3] x x [SrTiO 3] yx [PbTiO 3] z （其中x + y + z = 100份摩尔，x，y和z的每个值在线上或在通过四个点A（72,10,18），B（76， 5，19），C（57,5,38）和D（48,20,32）在三角形组成图中），并且所述三个主要成分由（Pb1-xBax）（Cu + E， / 2 + EE W + E，fra 1/2 + EE）O 3（其中0

公开(公告)号：US06411495B1

公开(公告)日：2002-06-25

申请号：US09776402

申请日：2001-02-02

申请人： Nobuyuki Wada ,  Jun Ikeda ,  Takashi Hiramatsu ,  Yukio Hamaji

发明人： Nobuyuki Wada ,  Jun Ikeda ,  Takashi Hiramatsu ,  Yukio Hamaji

IPC分类号： H01G410

摘要： The present invention provides a dielectric ceramic composition whose electrostatic capacity has an excellently low temperature dependence; which can be fired in a reducing atmosphere; and which is advantageously used in a laminated ceramic capacitor having an internal electrode formed of a base metal such as nickel or nickel alloy. The dielectric ceramic composition is represented by the following formula: {Ba1-xCaxO}mTiO2+&agr;MgO+&bgr;MnO, wherein 0.001≦&agr;≦0.05; 0.001≦&bgr;≦0.025; 1.000

公开(公告)号：US06243254B1

公开(公告)日：2001-06-05

申请号：US09369988

申请日：1999-08-06

申请人： Nobuyuki Wada ,  Masamitsu Shibata ,  Takashi Hiramatsu ,  Yukio Hamaji

发明人： Nobuyuki Wada ,  Masamitsu Shibata ,  Takashi Hiramatsu ,  Yukio Hamaji

IPC分类号： H01G406

CPC分类号： C04B35/4684 ,  C04B35/465 ,  H01G4/1227

摘要： Provided is a highly reliable laminated ceramic capacitor in which decrease of dielectric constant under a high electric field is small and which satisfies the B-grade and X7R grade characteristics, using Ni for the inner electrodes, wherein the dielectric material contains about 0.2 to 5.0 parts by weight of Li2O—(Si, Ti)2—MO oxides (MO is at least one of the compounds of Al2O3 and ZrO2) or SiO2—TiO2—XO oxides (XO is at least one of the compounds of BaO, CaO, SrO, MgO, ZnO and MnO) relative to 100 parts by weight of a principal component represented by (Ba1−xCaxO)mTiO2+&agr;Re2O3+&bgr;MgO+&ggr;MnO (Re2O3 represents at least one of Y2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3 and Yb2O3).

摘要翻译： 提供了一种高度可靠的层叠陶瓷电容器，其中使用Ni作为内部电极，其中高电场下介电常数的降低小且满足B级和X7R等级特性，其中介电材料含有约0.2至5.0份 的Li2O-（Si，Ti）2-MO氧化物（MO是Al2O3和ZrO2的化合物中的至少一种）或SiO 2 -TiO 2 -XO氧化物（XO是BaO，CaO，SrO的化合物中的至少一种 ，MgO，ZnO和MnO）相对于100重量份由（Ba1-xCaxO）mTiO2 +αRe2O3+βMgO+γMnO表示的主成分（Re2O3表示Y2O3，Gd2O3，Tb2O3，Dy2O3，Ho2O3，Er2O3和Dy2O3中的至少一种） Yb2O3）。

公开(公告)号：US5822176A

公开(公告)日：1998-10-13

申请号：US879536

申请日：1997-06-20

申请人： Harunobu Sano ,  Hiroyuki Wada ,  Yukio Hamaji

发明人： Harunobu Sano ,  Hiroyuki Wada ,  Yukio Hamaji

IPC分类号： H01G4/12 ,  H01G4/30 ,  H01G4/06 ,  H01G4/20 ,  H01G4/228

CPC分类号： H01G4/1227

摘要： A dielectric ceramic composition and a monolithic ceramic capacitor using the composition are provided. The dielectric ceramic composition includes: barium titanate; at least one rare earth oxide selected from terbium oxide, dysprosium oxide, holmium oxide, erbium oxide and ytterbium oxide; manganese oxide and nickel oxide; and magnesium oxide in an amount of from 0.5 to 3.0 mols in terms of MgO, and silicon oxide in an amount of from 0.2 to 5.0 mols in terms of SiO.sub.2, relative to 100 mols of the essential component having the following compositional formula: (1--.alpha.--.beta.){BaO}.sub.m TiO.sub.2 +.alpha.Re.sub.2 O.sub.3 +.beta.(Mn.sub.1-x Ni.sub.x)O where Re.sub.2 O.sub.3 is at least one selected from Tb.sub.2 O.sub.3, Dy.sub.2 O.sub.3, Ho.sub.2 O.sub.3, Er.sub.2 O.sub.3 and Yb.sub.2 O.sub.3 ; and .alpha., .beta., m and x are as follows: 0.0025.ltoreq..alpha..ltoreq.0.020 0.0025.ltoreq..beta..ltoreq.0.04 .beta./.alpha..ltoreq.4 0.ltoreq.x

摘要翻译： 提供介电陶瓷组合物和使用该组合物的叠层陶瓷电容器。 电介质陶瓷组合物包括：钛酸钡; 选自氧化铽，氧化镝，氧化钬，氧化铒和氧化镱中的至少一种稀土氧化物; 氧化锰和氧化镍; 相对于具有以下组成式的必需成分为100摩尔，氧化镁的摩尔数为0.2〜5.0摩尔，SiO 2为0.2摩尔％ - α-β）{BaO} mTiO 2 +αRe 2 O 3 +β（Mn 1-x Nix）O其中Re 2 O 3是选自Tb 2 O 3，Dy 2 O 3，Ho 2 O 3，Er 2 O 3和Yb 2 O 3中的至少一种; 和α，β，m和x如下：0.0025

公开(公告)号：US5815368A

公开(公告)日：1998-09-29

申请号：US940092

申请日：1997-09-29

申请人： Norihiko Sakamoto ,  Harunobu Sano ,  Hiroyuki Wada ,  Yukio Hamaji

发明人： Norihiko Sakamoto ,  Harunobu Sano ,  Hiroyuki Wada ,  Yukio Hamaji

IPC分类号： C04B35/46 ,  H01B3/12 ,  H01G4/12 ,  H01G4/06

CPC分类号： H01G4/1227

摘要： Disclosed is a monolithic ceramic capacitor comprising dielectric ceramic layers made from a ceramic composition, which comprises an essential component of (1-.alpha.-.beta.){BaO}.sub.m.TiO.sub.2 +.alpha.{(1-x)M.sub.2 O.sub.3 +xRe.sub.2 O.sub.3 }+.beta.(Mn.sub.1-y-z Ni.sub.y Co.sub.z)O (0.0025.ltoreq..alpha..ltoreq.0.025; 0.0025.ltoreq..beta..ltoreq.0.05; .beta./.alpha..ltoreq.4; 0

摘要翻译： 公开了一种包含由陶瓷组合物制成的介电陶瓷层的单片陶瓷电容器，其包含（1-α-β）{BaO} m.TiO 2 +α{（1-x）M 2 O 3 + xRe 2 O 3} +β（Mn 1 -y-zNiyCoz）O（0.0025

公开(公告)号：US5672220A

公开(公告)日：1997-09-30

申请号：US636685

申请日：1996-04-23

申请人： Nagato Omori ,  Yukio Hamaji ,  Yoshiaki Mori ,  Yukio Sakabe

发明人： Nagato Omori ,  Yukio Hamaji ,  Yoshiaki Mori ,  Yukio Sakabe

IPC分类号： H01G4/12 ,  H01G4/30 ,  H05K1/03 ,  H05K3/46 ,  C04B37/00

CPC分类号： H01G4/30 ,  H05K1/0306 ,  H05K3/4611 ,  H05K3/4629

摘要： A plurality of dielectric ceramic sheets having inner electrodes thereon are laminated and sintered. The ceramic sheets are made of a non-reducing dielectric material, and the inner electrodes are made of a base metal or a base metal alloy. After a binder removing step, the laminate is sintered in a mixed gas which contains either one or both of carbon dioxide with a purity of 99.9% or more and carbon monoxide with a purity of 99.9% or more as its main constituent and further contains hydrogen and oxygen with their densities regulated.

摘要翻译： 其上具有内电极的多个介电陶瓷片被层压并烧结。 陶瓷片由非还原电介质材料制成，内电极由贱金属或贱金属合金制成。 在粘合剂除去步骤之后，将层压体在含有纯度为99.9％以上的二氧化碳中的一种或两种作为主要成分的纯度为99.9％以上的一氧化碳的混合气体中烧结，并且还含有氢 氧气密度调节。