公开(公告)号：US06829136B2

公开(公告)日：2004-12-07

申请号：US10704831

申请日：2003-11-12

申请人： Tomoyuki Nakamura ,  Hiroyasu Konakaka ,  Harunobu Sano

发明人： Tomoyuki Nakamura ,  Hiroyasu Konakaka ,  Harunobu Sano

IPC分类号： H01G406

CPC分类号： H01G4/1227 ,  H01G4/30

摘要： A dielectric ceramic is composed of ABO3 as the main component and a rare earth element, wherein A represents barium which may be partly replaced with at least one of calcium and strontium, and B represents titanium which may be partly replaced with at least one selected from zirconium and hafnium. At least 70% of crystal grains of the dielectric ceramic have a cross-section in which a first region containing dissolved rare earth element occupies 5 to 70% of the area of the cross section and a second region free of the dissolved rare earth element occupies 10 to 80% of the periphery of the cross-section. A monolithic ceramic capacitor having thin dielectric ceramic layers composed of this dielectric ceramic exhibits superior capacitance-temperature characteristics and high reliability.

摘要翻译： 电介质陶瓷由ABO3作为主要成分和稀土元素组成，其中A表示钡，可以部分地被钙和锶中的至少一种代替，B代表钛，其可以部分地被至少一种选自 锆和铪。 介电陶瓷的至少70％的晶粒具有横截面，其中含有溶解的稀土元素的第一区域占截面面积的5至70％，而不含溶解的稀土元素的第二区域占据 10至80％的横截面周边。 具有由该介电陶瓷构成的薄介电陶瓷层的单片陶瓷电容器具有优异的电容温度特性和高可靠性。

公开(公告)号：US06606238B1

公开(公告)日：2003-08-12

申请号：US10265262

申请日：2002-10-07

申请人： Tomoyuki Nakamura ,  Motohiro Shimizu ,  Harunobu Sano

发明人： Tomoyuki Nakamura ,  Motohiro Shimizu ,  Harunobu Sano

IPC分类号： H01G4008

CPC分类号： H01G4/008 ,  B32B18/00 ,  B32B2311/08 ,  B32B2311/22 ,  C04B35/4682 ,  C04B35/49 ,  C04B35/6262 ,  C04B35/63 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3236 ,  C04B2235/3262 ,  C04B2235/3418 ,  C04B2235/5445 ,  C04B2235/6025 ,  C04B2235/6582 ,  C04B2235/6584 ,  C04B2235/77 ,  C04B2235/79 ,  C04B2235/96 ,  C04B2235/9615 ,  C04B2237/346 ,  C04B2237/405 ,  C04B2237/408 ,  C04B2237/704 ,  H01G4/30

摘要： A conductive paste contains a ceramic powder in addition to a conductive metal powder and an organic vehicle. The ceramic powder is a powder produced by calcining an ABO3 system in which A represents Ba or alternatively Ba partially substituted by at least one of Ca and Sr, and B represents Ti or alternatively Ti partially substituted by at least one of Zr and Hf, the system containing at least one selected from the group of consisting of Re compounds (La or the like), Mg compounds, and Mn compounds. The ceramic powder has an average grain size smaller than that of the metal powder and being incapable of sintering at the sintering temperature of the substrate-use ceramic.

摘要翻译： 除了导电金属粉末和有机载体之外，导电糊还含有陶瓷粉末。 陶瓷粉末是通过煅烧其中A表示Ba的ABO3体系或者部分地被Ca和Sr中的至少一种替代的Ba，B表示Ti或者由Zr和Hf中的至少一种部分替代的Ti而制备的粉末， 含有选自Re化合物（La等），Mg化合物和Mn化合物中的至少一种的体系。 陶瓷粉末的平均粒径小于金属粉末的粒径，并且在基板用陶瓷的烧结温度下不能烧结。

公开(公告)号：US06301092B1

公开(公告)日：2001-10-09

申请号：US09591298

申请日：2000-06-09

申请人： Kotaro Hata ,  Toshihiro Okamatsu ,  Tomoyuki Nakamura ,  Kenji Hori ,  Harunobu Sano

发明人： Kotaro Hata ,  Toshihiro Okamatsu ,  Tomoyuki Nakamura ,  Kenji Hori ,  Harunobu Sano

IPC分类号： H01G406

CPC分类号： H01G4/1245 ,  H01G4/1218 ,  H01G4/1236

摘要： A ceramic capacitor has a dielectric ceramic layer and at least one pair of electrodes. The dielectric ceramic layer has a primary phase and secondary phases, and the size of the secondary phases in the thickness direction of the dielectric ceramic layer is not more than about one-third of the thickness of the dielectric ceramic layer. A method for making the ceramic capacitor includes the steps of mixing compounds constituting secondary phases in a primary phase of a dielectric ceramic, annealing and then pulverizing the mixture to prepare a raw material for the secondary phases, mixing the raw material for the secondary phases with other materials for the dielectric ceramic shaping and sintering the mixture to form a dielectric ceramic, and forming electrodes on the dielectric ceramic. The ceramic capacitor has high insulation resistance, superior load characteristics at high temperatures or high humidity and high weather resistance, even when sintered in a reducing atmosphere.

摘要翻译： 陶瓷电容器具有介电陶瓷层和至少一对电极。 电介质陶瓷层具有主相和次相，并且介电陶瓷层的厚度方向上的次相的尺寸不超过介电陶瓷层的厚度的约三分之一。 制造陶瓷电容器的方法包括以下步骤：将构成第二相的化合物混合在电介质陶瓷的初生相中，退火然后粉碎混合物以制备二次相的原料，将第二相的原料与 电介质陶瓷的其他材料成型并烧结混合物以形成电介质陶瓷，并在电介质陶瓷上形成电极。 陶瓷电容器具有高绝缘电阻，在高温或高湿度下具有优异的负载特性和高耐候性，即使在还原气氛中烧结也是如此。

公开(公告)号：US6143109A

公开(公告)日：2000-11-07

申请号：US83407

申请日：1998-05-22

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：US6008981A

公开(公告)日：1999-12-28

申请号：US28403

申请日：1998-02-24

申请人： Kazuhiro Harada ,  Harunobu Sano

发明人： Kazuhiro Harada ,  Harunobu Sano

IPC分类号： H01G4/12 ,  H01G4/30

CPC分类号： H01G4/1227

摘要： A dielectric ceramic composition including: a barium titanate containing principal component represented by the formula: (1-.alpha.-.beta.-.gamma.){BaO}.sub.m .multidot.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 wherein M.sub.2 O.sub.3 is at least one of Sc.sub.2 O.sub.3 and Y.sub.2 O.sub.3 ; Re.sub.2 O.sub.3 is at least one of Sm.sub.2 O.sub.3, Eu.sub.2 O.sub.3, and Gd.sub.2 O.sub.3 ; 0.0025.ltoreq..alpha.+.beta..ltoreq.0.025, 0

摘要翻译： 1.一种电介质陶瓷组合物，其特征在于，含有：主要成分为：（α-β-γ）{BaO} m×TiO 2 +αM2 O 3 +βRe 2 O 3 +γ（Mn 1-x-y Ni x Co y O）O的主要成分的钛酸钡，其中M 2 O 3为 Sc2O3和Y2O3; Re 2 O 3是Sm 2 O 3，Eu 2 O 3和Gd 2 O 3中的至少一种; 0.0025

公开(公告)号：US5852542A

公开(公告)日：1998-12-22

申请号：US897249

申请日：1997-07-18

申请人： Hiroyuki Wada ,  Harunobu Sano ,  Norihiko Sakamoto

发明人： Hiroyuki Wada ,  Harunobu Sano ,  Norihiko Sakamoto

IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01G4/12 ,  H01G4/30 ,  H01G4/06 ,  H01G2/20 ,  H01G4/005 ,  H01G4/228

CPC分类号： C04B35/468 ,  H01G4/1227

摘要： A monolithic ceramic capacitor has dielectric ceramic layers of a material comprising barium titanate having alkali metal oxides impurities in an amount of not more than about 0.02% by weight, manganese oxide, cobalt oxide, and nickel oxide; from about 0.5 to 5.0 mols MgO to 100 mols of a main constituent shown by the following composition 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 wherein M.sub.2 O.sub.3 is at least one of Sc.sub.2 O.sub.3 and Y.sub.2 O.sub.3 ; Re.sub.2 O.sub.3 is at least one of Sm.sub.2 O.sub.3 and Eu.sub.2 O.sub.3 and .alpha., .beta., .gamma., m, x, and y are 0.0025.ltoreq..alpha.+.beta..ltoreq.0.025 0.ltoreq..beta..ltoreq.0.0075 0.0025.ltoreq..gamma..ltoreq.0.05 .gamma./(.alpha.+.beta.).ltoreq.4 0.ltoreq.x

摘要翻译： 一种叠层陶瓷电容器具有介电陶瓷层，该介电陶瓷层包括不大于约0.02重量％的碱金属氧化物杂质的钛酸钡，氧化锰，氧化钴和氧化镍; 约0.5-5.0摩尔MgO至100摩尔由以下组成式表示的主要成分：（1-α-β-γ）{BaO} m.TiO 2 +αM 2 O 3 +βRe 2 O 3 +γ（Mn 1-x-y NixCoy）O 是Sc2O3和Y2O3中的至少一种; Re 2 O 3是Sm 2 O 3和Eu 2 O 3中的至少一种，α，β，γ，m，x和y分别为0.0025≤α+β= 0.025 0

公开(公告)号：US5835340A

公开(公告)日：1998-11-10

申请号：US895846

申请日：1997-07-18

申请人： Hiroyuki Wada ,  Harunobu Sano ,  Norihiko Sakamoto

发明人： Hiroyuki Wada ,  Harunobu Sano ,  Norihiko Sakamoto

IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01G4/12 ,  H01G4/30 ,  H01G4/06 ,  H01G2/20 ,  H01G4/20 ,  H01G4/228

CPC分类号： H01G4/1227 ,  C04B35/468

摘要： A monolithic ceramic capacitor having a plurality of dielectric ceramic layers, internal electrodes, and external electrodes electrically connected to the internal electrode, wherein the dielectric ceramic layers comprise (a) barium titanate having an alkali metal oxide impurity content of not more than about 0.02% by weight, (b) scandium oxide and/or yttrium oxide, (c) gadolinium oxide, terbium oxide and/or dysprosium oxide, (d) manganese oxide, (e) cobalt oxide, and (f) nickel oxide, and is a material containing (1) 100 mols represented by the compositional formula: (1-.alpha.-.beta.){BaO}.sub.m .cndot.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 wherein M.sub.2 O.sub.3 represents the above-mentioned (b); Re.sub.2 O.sub.3 represents the above-mentioned (c); 0.0025.ltoreq..beta..ltoreq.0.05; .beta./.alpha..ltoreq.4; 0

摘要翻译： 一种具有多个介电陶瓷层，内部电极和与内部电极电连接的外部电极的叠层陶瓷电容器，其中介电陶瓷层包括（a）碱金属氧化物杂质含量不大于约0.02％的钛酸钡， （b）氧化钪和/或氧化钇，（c）氧化钆，氧化铽和/或氧化镝，（d）氧化锰，（e）氧化钴和（f）氧化镍， 含有（1）以组成式表示的100摩尔的材料：（1-α-β）{BaO} m.TiO 2 +α{（1-x）M 2 O 3 + xRe 2 O 3} +β（Mn 1-y-z Ni y Co z） 上述（b）; Re2O3代表上述（c）; 0.0025

公开(公告)号：US5742473A

公开(公告)日：1998-04-21

申请号：US771312

申请日：1996-12-20

申请人： Harunobu Sano ,  Hiroyuki Wada ,  Yukio Hamaji

发明人： Harunobu Sano ,  Hiroyuki Wada ,  Yukio Hamaji

IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01G4/12 ,  H01G4/06 ,  H01G2/20 ,  H01G4/005 ,  H01G4/228

CPC分类号： C04B35/468

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

摘要翻译： 公开了一种单片陶瓷电容器，其包括由材料制成的介电陶瓷层，该材料包含（1-α-β）{BaO} m.TiO 2 +αRe 2 O 3 +β（Mn 1-x-y NixCoy）O（0.0025）

公开(公告)号：US5734545A

公开(公告)日：1998-03-31

申请号：US768505

申请日：1996-12-18

申请人： Harunobu Sano ,  Yukio Hamaji

发明人： Harunobu Sano ,  Yukio Hamaji

IPC分类号： C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01G4/12 ,  H01G4/06 ,  H01G4/20 ,  H01G4/228

CPC分类号： H01G4/1227 ,  C04B35/468

摘要： Disclosed is a monolithic ceramic capacitor comprising dielectric ceramic layers made from a material which comprises an essential component of (1-.alpha.-.beta.){BaO}.sub.m .cndot.TiO.sub.2 +.alpha.Re.sub.2 O.sub.3 30 .beta.(Mn.sub.1-x-y Ni.sub.x Co.sub.y)O (0.0025.ltoreq..alpha..ltoreq.0.025; 0.0025.ltoreq..beta..ltoreq.0.05; .beta./.alpha..ltoreq.4; 0.ltoreq.x

摘要翻译： 公开了一种单片陶瓷电容器，其包括由材料制成的介电陶瓷层，该材料包含（1-α-β）{BaO} m.TiO 2 +αRe 2 O 3 30β（Mn 1-x-y NixCoy）O（0.0025≤α

公开(公告)号：US5659456A

公开(公告)日：1997-08-19

申请号：US585478

申请日：1996-01-16

申请人： Harunobu Sano ,  Hiroyuki Wada

发明人： Harunobu Sano ,  Hiroyuki Wada

IPC分类号： H01G4/12 ,  H01G4/06 ,  H01G2/20 ,  H01G4/20 ,  H01G4/228

CPC分类号： H01G4/1227

摘要： Disclosed is a monolithic ceramic capacitor comprising dielectric ceramic layers and inner electrodes wherein each dielectric ceramic layer comprises an essential component having a compositional formula of (1-.alpha.-.beta.)(BaO).sub.m TiO.sub.2 +.alpha.Y.sub.2 O.sub.3 +.beta.(CO.sub.1-x Ni.sub.x)O (where the alkali metal content of BaTiO.sub.3 is not more than 0.03% by weight, 0.0025.ltoreq..alpha..ltoreq.0.03, 0.0025.ltoreq..beta..ltoreq.0.06, 0

摘要翻译： 公开了一种包括电介质陶瓷层和内部电极的单片陶瓷电容器，其中每个电介质陶瓷层包含具有组成式（1-α-β）（BaO）mTiO 2 +αY 2 O 3 +β（CO 1-x Nix）O）的必需组分（其中 BaTiO 3的碱金属含量不超过0.03重量％，0.0025