公开(公告)号：US5006955A

公开(公告)日：1991-04-09

申请号：US482658

申请日：1990-02-21

申请人： Hiroshi Kishi ,  Hirokazu Chazono ,  Minoru Oshio ,  Hiroshi Saito ,  Toshiya Nakamura ,  Hisamitsu Shizuno

发明人： Hiroshi Kishi ,  Hirokazu Chazono ,  Minoru Oshio ,  Hiroshi Saito ,  Toshiya Nakamura ,  Hisamitsu Shizuno

IPC分类号： C04B35/46 ,  C04B35/468 ,  C04B35/49 ,  H01G4/12

CPC分类号： C04B35/4682 ,  C04B35/49 ,  H01G4/1245

摘要： A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2 }+.alpha.CaZrO.sub.3where M is either or both of calcium and strontium, and .alpha., k and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredients and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C. and then are reheated at a lower temperature in an oxidative atmosphere.

公开(公告)号：US4809131A

公开(公告)日：1989-02-28

申请号：US187741

申请日：1988-04-29

申请人： Hirokazu Chazono ,  Minoru Oshio ,  Shunji Murai ,  Hiroshi Kishi

发明人： Hirokazu Chazono ,  Minoru Oshio ,  Shunji Murai ,  Hiroshi Kishi

IPC分类号： C04B35/49 ,  H01B3/12 ,  H01G4/12 ,  H01G4/232 ,  C04B35/50 ,  H01G7/00

CPC分类号： H01G4/2325 ,  C04B35/49 ,  H01G4/1245 ,  Y10T29/435

摘要： A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula,(Ba.sub.1-v-w Me.sub.v Mg.sub.w O).sub.k (Zr.sub.1-x-y Ti.sub.x Si.sub.y)O.sub.2where Me is either or both of strontium and calcium, and v, w, x, y and k are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C., and then are reheated at a lower temperature in an oxidative atmosphere.

公开(公告)号：US4700266A

公开(公告)日：1987-10-13

申请号：US945075

申请日：1986-12-22

申请人： Hirokazu Chazono ,  Hiroshi Kishi ,  Shunji Murai ,  Masami Fukui ,  Takeshi Wada

发明人： Hirokazu Chazono ,  Hiroshi Kishi ,  Shunji Murai ,  Masami Fukui ,  Takeshi Wada

IPC分类号： H01G4/30 ,  C04B35/47 ,  C04B35/49 ,  H01B3/12 ,  H01G4/12 ,  C04B35/46

CPC分类号： H01G4/1245 ,  C04B35/47 ,  C04B35/49

摘要： A temperature compensating capacitor of monolithic or multilayered configuration comprising a dielectric ceramic body and at least two electrodes buried therein. The ceramic body is composed of a major ingredient expressed by the formula, {(Sr.sub.1-x Ca.sub.x)O}.sub.k (Ti.sub.1-y Zr.sub.y)O.sub.2, where x, k and y are numerals in the ranges of 0.005 to 0.995 inclusive, 1.00 to 1.04 inclusive, and 0.005 to 0.100 inclusive, respectively. To this major ingredient is added a minor proportion of a mixture of lithium oxide, silicon dioxide, and one or more metal oxides selected from among barium oxide, magnesium oxide, zinc oxide, strontium oxide and calcium oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere and then are reheated at a lower temperature in an oxidative atmosphere. the cosintering temperature can be so low that nickel or like base metal can be employed as the electrode material.

摘要翻译： 一种单片或多层结构的温度补偿电容器，包括介电陶瓷体和埋在其中的至少两个电极。 陶瓷体由式（{（Sr1-xCax）O} k（Ti1-yZry）O2）表示的主要成分组成，其中x，k和y为0.005〜0.995的数值，1.00〜1.04 分别为0.005〜0.100。 在该主要成分中加入少量的氧化锂，二氧化硅和选自氧化钡，氧化镁，氧化锌，氧化锶和氧化钙中的一种或多种金属氧化物的混合物。 为了制造电容器，将上述主要成分和细分散形式的添加剂的混合物形成为所需形状和尺寸的模制品，其中至少埋设有两个电极。 模制品和电极在还原或中性气氛中共烧结，然后在较低温度下在氧化气氛中再加热。 整个烧结温度可以低到可以使用镍或类似的贱金属作为电极材料。