公开(公告)号：US06730624B2

公开(公告)日：2004-05-04

申请号：US10427978

申请日：2003-05-02

申请人： Tomoo Motoki ,  Masahiro Naito ,  Harunobu Sano

发明人： Tomoo Motoki ,  Masahiro Naito ,  Harunobu Sano

IPC分类号： C04B35465

CPC分类号： C04B35/465 ,  H01G4/1227 ,  H01G4/1236 ,  H01G4/1245

摘要： A non-reducing dielectric ceramic contains Ca, Zr and Ti as metallic elements and does not contain Pb. In a CuK&agr; X-ray diffraction pattern, the ratio of the maximum peak intensity of secondary crystal phases to the maximum peak intensity at 2&thgr;=25° to 35° of a perovskite primary crystal phase is about 12% or less, the secondary crystal phases including all the crystal phases other than the perovskite primary crystal phase. The non-reducing dielectric ceramic exhibits superior insulating resistance and dielectric loss after firing in a neutral or reducing atmosphere and high reliability in a high-temperature loading lifetime test and is useful for producing compact high-capacitance monolithic ceramic capacitors.

摘要翻译： 非还原电介质陶瓷含有Ca，Zr和Ti作为金属元素，不含Pb。 在CuKαX射线衍射图中，二次晶相的最大峰强度与钙钛矿一次结晶相的2θ= 25°〜35°的最大峰强度的比例为约12％以下，二次结晶相 包括除了钙钛矿一级结晶相以外的所有晶相。 非还原电介质陶瓷在中性或还原性气氛中焙烧后具有优异的绝缘电阻和介电损耗，并且在高温负载寿命试验中具有高可靠性，并且可用于生产紧凑型大电容单片陶瓷电容器。

公开(公告)号：US06617273B2

公开(公告)日：2003-09-09

申请号：US09828013

申请日：2001-04-06

申请人： Tomoo Motoki ,  Masahiro Naito ,  Harunobu Sano

发明人： Tomoo Motoki ,  Masahiro Naito ,  Harunobu Sano

IPC分类号： C04B35465

CPC分类号： C04B35/465 ,  H01G4/1227 ,  H01G4/1236 ,  H01G4/1245

摘要： A non-reducing dielectric ceramic contains Ca, Zr and Ti as metallic elements and does not contain Pb. In a CuK&agr; X-ray diffraction pattern, the ratio of the maximum peak intensity of secondary crystal phases to the maximum peak intensity at 2&thgr;=25° to 35° of a perovskite primary crystal phase is about 12% or less, the secondary crystal phases including all the crystal phases other than the perovskite primary crystal phase. The non-reducing dielectric ceramic exhibits superior insulating resistance and dielectric loss after firing in a neutral or reducing atmosphere and high reliability in a high-temperature loading lifetime test and is useful for producing compact high-capacitance monolithic ceramic capacitors.

公开(公告)号：US06396681B2

公开(公告)日：2002-05-28

申请号：US09827653

申请日：2001-04-06

申请人： Masahiro Naito ,  Tomoo Motoki ,  Harunobu Sano

发明人： Masahiro Naito ,  Tomoo Motoki ,  Harunobu Sano

IPC分类号： H01G406

CPC分类号： C04B35/49 ,  H01B3/12 ,  H01G4/1227 ,  H01G4/1236 ,  H01G4/1245

摘要： A nonreducing dielectric contains a main-component having a perovskite crystal phase and satisfying the formula (Ca1-a-b-cSraBabMgc)m(Zr1-w-x-y-zTiwMnxNiyHfz)O3 and a compound oxide represented by the formulae (Si, T)O2—MO—XO and (Si, T)O2—(Mn, M′)O—Al2O3. The ratio of the intensity of the maximum peak of a crystal phase not of the perovskite crystal phase to the intensity of the maximum peak assigned to the perovskite crystal phase appearing at 2&thgr;=25 to 35° is about 5% or less in a CuK&agr; X-ray diffraction pattern.

摘要翻译： 非还原电介质包含具有钙钛矿结晶相并满足下式的主成分和由式（Si，T）O 2 -MO-XO和（Si，T）O 2 - （Mn，M'）O- Al2O3。 不是钙钛矿结晶相的结晶相的最大峰强度与在2θ= 25〜35°处出现的钙钛矿结晶相的最大峰强度的比例在CuKalpha X中为约5％以下 射线衍射图。

公开(公告)号：US06233134B1

公开(公告)日：2001-05-15

申请号：US09369658

申请日：1999-08-05

申请人： Norihiko Sakamoto ,  Tomoo Motoki ,  Harunobu Sano

发明人： Norihiko Sakamoto ,  Tomoo Motoki ,  Harunobu Sano

IPC分类号： H01G406

CPC分类号： C04B35/49 ,  C04B35/465 ,  C04B35/47 ,  H01G4/1227

摘要： An anti-reducing dielectric ceramic composition having a dielectric constant of 100 or higher and excellent reliability during a life measuring test under a high temperature load and a monolithic ceramic capacitor formed by using the improved anti-reducing dielectric ceramic composition. The composition is a composite oxide represented by the composition formula (Ca1−xSrx)m(Zr1−yTiy)O3, 0≦x

摘要翻译： 介电常数为100以上的抗还原性电介质陶瓷组合物，在高温负载下的寿命测定试验中具有优异的可靠性以及使用改进的抗还原性电介质陶瓷组合物形成的叠层陶瓷电容器。 该组合物是以组成式（Ca1-xSrx）m（Zr1-yTiy）O3,0 <= x <0.5,0.60

公开(公告)号：US06442813B1

公开(公告)日：2002-09-03

申请号：US09058081

申请日：1998-04-09

申请人： Norihiko Sakamoto ,  Harunobu Sano ,  Takaharu Miyazaki

发明人： Norihiko Sakamoto ,  Harunobu Sano ,  Takaharu Miyazaki

IPC分类号： H01G907

CPC分类号： H01G4/30 ,  Y10T29/43 ,  Y10T29/435 ,  Y10T29/49126

摘要： A monolithic ceramic capacitor includes a plurality of dielectric ceramic layers, a plurality of inner electrodes formed between the dielectric ceramic layers in such a manner that one end of each inner electrode is exposed out of either end of the dielectric ceramic layers, and outer electrodes electrically connected with the exposed inner electrodes; in which the inner electrodes each are made of a base metal, and Si oxide layers or layers comprising an Si oxide and at lest one component that constitutes said dielectric ceramic layers and said inner electrodes are formed adjacent to the inner electrodes. The capacitor has excellent thermal impact resistance and wet load resistance characteristics. A producing method includes firing a green sheet laminate including a metal inner electrode at an oxygen partial pressure of about said equilibrium oxygen partial pressure of the metal to the metal oxide.

摘要翻译： 单片陶瓷电容器包括多个电介质陶瓷层，多个内电极，形成在电介质陶瓷层之间，使每个内电极的一端从电介质陶瓷层的任一端露出，外电极电 与暴露的内部电极连接; 其中内部电极各自由贱金属制成，并且包括Si氧化物的Si氧化物层或构成所述介电陶瓷层和所述内部电极的至少一个部件的Si形成在与内部电极相邻的位置。 电容器具有优异的耐热冲击性和耐湿负载特性。 一种制造方法包括以大约金属的平衡氧分压的氧分压与金属氧化物烧结包含金属内电极的生片层压体。

公开(公告)号：US06310761B1

公开(公告)日：2001-10-30

申请号：US09655071

申请日：2000-09-05

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

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

IPC分类号： H01G406

CPC分类号： C04B35/4682 ,  C01G23/002 ,  C01P2004/61 ,  C01P2006/40 ,  H01G4/1227

摘要： A dielectric ceramic composition is composed of barium titanate (BamTiO3), a rare-earth oxide (RO3/2), where the rare-earth element is at least one of Y, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb, calcium oxide and a silicon oxide. When the dielectric ceramic composition is represented by the formula 100BamTiO3+aRO3/2+bCaO+cSiO2, where coefficients 100, a, b, and c indicate moles, the relationships 0.990≦m≦1.030, 0.5≦a≦30, 0.5≦b≦30, and 0.5≦c≦30 are satisfied. A monolithic ceramic capacitor includes a plurality of dielectric ceramic layers, internal electrodes formed between the dielectric ceramic layers and external electrodes electrically connected to the internal electrodes. The dielectric ceramic layers are composed of the dielectric ceramic composition described above, and the internal electrodes are composed of a base metal as a principal constituent.

摘要翻译： 介电陶瓷组合物由稀土元素为Y，Sm，Eu，Gd，Tb，Dy，Ho，Er中的至少一种的钛酸钡（BamTiO 3），稀土类氧化物（RO3 / 2） ，Tm和Yb，氧化钙和氧化硅。 当电介质陶瓷组合物由式100BamTiO3 + aRO3 / 2 + bCaO + cSiO2表示时，其中系数100，a，b和c表示摩尔数，关系0.990 <= m <= 1.030,0.5 <= a <= 30 ，0.5 <= b <= 30，满足0.5 <= c <30。 单片陶瓷电容器包括多个电介质陶瓷层，形成在电介质陶瓷层和电连接到内部电极的外部电极之间的内部电极。 电介质陶瓷层由上述介电陶瓷组合物构成，内部电极以贱金属为主要成分。

公开(公告)号：US06195250B1

公开(公告)日：2001-02-27

申请号：US09394419

申请日：1999-09-13

申请人： Hiroaki Matoba ,  Harunobu Sano

发明人： Hiroaki Matoba ,  Harunobu Sano

IPC分类号： H01G406

CPC分类号： C04B35/4686 ,  H01G4/1227

摘要： Laminated ceramic parts such as a laminated ceramic condenser and a laminated LC filter are formed by using a temperature compensating dielectric ceramic composition having a high relative dielectric constant and a high Q value, and which can be sintered at a relatively low temperature during the manufacturing processes, without causing any undesired variations in ceramic properties during the sintering treatment. The composition includes 100 parts by weight of a main component having a mole composition ratio (BaO, TiO2, Re2O3) shown in a ternary composition diagram indicated by an area surrounded by point A (39.5. 59.5, 1), point B (1, 59.5, 39.5), point C (1, 85, 14) and point D (14, 85, 1); about 25 parts by weight or less of a lead free B2O3—SiO2 glass; at least one of V oxide (the content as V2O5 being about 10 parts by weight or less) and W oxide (the content as WO3 being about 20 parts by weight or less). Preferably, the composition further contains either about 10 parts by weight or less of CuO, or about 20 parts by weight or less of MnO.

摘要翻译： 通过使用具有高相对介电常数和高Q值的温度补偿介电陶瓷组合物来形成层压陶瓷电容器和层叠LC滤波器之类的层压陶瓷部件，并且可以在制造过程中在相对低的温度下烧结 ，而不会在烧结处理期间引起陶瓷性能的任何不期望的变化。 该组合物包含100重量份具有以由A点（39.5,59.5,1）包围的区域表示的三元组成图所示的摩尔组成比（BaO，TiO 2，Re 2 O 3）的主要成分，B（1， 59.5,39.5），C点（1,85,14）和D点（14,85,1）; 约25重量份或更少的无铅B2O3-SiO2玻璃; V氧化物（V 2 O 5的含量为约10重量份以下）和W氧化物（WO 3的含量为约20重量份以下）中的至少一种。 优选地，组合物还含有约10重量份或更少的CuO，或约20重量份或更少的MnO。

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：US5554571A

公开(公告)日：1996-09-10

申请号：US538335

申请日：1995-10-03

申请人： Shinsei Okabe ,  Sakiko Iwamoto ,  Harunobu Sano

发明人： Shinsei Okabe ,  Sakiko Iwamoto ,  Harunobu Sano

IPC分类号： C01G25/00 ,  C01G27/00 ,  C04B35/49 ,  C04B35/626

CPC分类号： C01G27/006 ,  C01G25/006 ,  C04B35/49 ,  C04B35/626 ,  C01P2002/34

摘要： Powder of dielectric ceramic materials is produced by preparing a main component Ba(Ti.sub.1-x-y Zr.sub.x Hf.sub.y)O.sub.3 allowing barium hydroxide, at least one titanium compound, at least one zirconium compound and at least one hafnium compound to react with one another by condensation by catalytic actions of a base selected from the group consisting of alkali and amines; preparing a complex hydroxide of at least one rare earth element and manganese by allowing at least one rare earth element compound and a manganese compound to react with a base selected from the group consisting of alkali and amines in an aqueous solution; preparing at least one carbonate of calcium and magnesium by allowing at least one compound of calcium compounds and magnesium compounds to react with carbonate ions in an aqueous solution; mixing all the precipitates, and drying and thermally treating the resultant mixture.

摘要翻译： 电介质陶瓷材料的粉末是通过制备主要成分Ba（Ti1-x-yZrxHfy）O3来制备的，所述主要组分Ba（Ti1-x-yZrxHfy）O3允许氢氧化钡，至少一种钛化合物，至少一种锆化合物和至少一种铪化合物彼此反应， 选自碱和胺的碱的催化作用; 通过在水溶液中使至少一种稀土元素化合物和锰化合物与选自碱和胺的碱反应来制备至少一种稀土元素和锰的复合氢氧化物; 通过使至少一种化合物的钙化合物和镁化合物与水溶液中的碳酸根离子反应来制备至少一种钙和镁的碳酸盐; 混合所有沉淀物，并干燥并热处理所得混合物。