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