公开(公告)号：US06187707B1

公开(公告)日：2001-02-13

申请号：US09308513

申请日：1999-05-20

申请人： Satoshi Kakihara ,  Toshiharu Hirota ,  Yasuhiro Nabika ,  Noriyuki Yamamoto

发明人： Satoshi Kakihara ,  Toshiharu Hirota ,  Yasuhiro Nabika ,  Noriyuki Yamamoto

IPC分类号： C04B35468

CPC分类号： H01C7/025 ,  C04B35/4684

摘要： A barium titanate-based semiconductive ceramic composition for facilitating miniaturization of thermistor devices by improving rush current resistance characteristics is provided. In the barium titanate-based semiconductive ceramic composition, a fraction of the Ba in BaTiO3 as the major component is replaced with 1 to 25 mole percent of Ca, 1 to 30 mole percent of Sr, and 1 to 50 mole percent of Pb; and wherein to 100 mole percent of the major component, the semiconductivity-imparting agent is added in an amount of 0.2 to 1.0 mole percent as a converted element content, and the additive comprises manganese oxide in an amount of 0.01 to 0.10 mole percent as a converted Mn content, silica in an amount of 0.5 to 5 mole percent as a converted SiO2 content, and magnesium oxide in an amount of 0.028 to 0.093 mole percent as a converted Mg content.

摘要翻译： 提供了一种通过提高冲击电流电阻特性来促进热敏电阻器件小型化的钛酸钡基半导体陶瓷组合物。 在钛酸钡系半导体陶瓷组合物中，作为主成分的BaTiO 3中的Ba的一部分被1〜25摩尔％的Ca，1〜30摩尔％的Sr和1〜50摩尔％的Pb代替， 其中，相对于100摩尔％的主成分，以半导电性赋予剂为0.2〜1.0摩尔％的量添加作为转化元素含量的添加剂，添加剂含有0.01〜0.10摩尔％的氧化锰， 转化的Mn含量，作为转化的SiO 2含量为0.5〜5摩尔％的二氧化硅，转化的Mg含量为0.028〜0.093摩尔％的氧化镁。

公开(公告)号：US06861622B2

公开(公告)日：2005-03-01

申请号：US10622552

申请日：2003-07-21

申请人： Satoshi Kakihara ,  Takehiko Ishii ,  Kenji Nagareda ,  Masahiko Kawase ,  Satoshi Fujita

发明人： Satoshi Kakihara ,  Takehiko Ishii ,  Kenji Nagareda ,  Masahiko Kawase ,  Satoshi Fujita

IPC分类号： H01C7/04 ,  H05B3/12 ,  H05B1/02

CPC分类号： H05B3/12 ,  H05B2203/019

摘要： A negative temperature coefficient thermistor includes a thermistor element containing a transition metal oxide as a main component; internal electrodes disposed in the thermistor element; and external electrodes, electrically connected to the internal electrodes. A method for manufacturing such a thermistor includes providing green ceramic sheets for forming the thermistor element; applying a conductive paste for forming the internal electrodes onto some of the green ceramic sheets to form internal electrode layers; stacking the green ceramic sheets and the green ceramic sheets with the paste to form a green compact; firing the green compact to obtain a fired compact; and forming the external electrodes.

摘要翻译： 负温度系数热敏电阻包括含有过渡金属氧化物作为主要成分的热敏电阻元件; 设置在热敏电阻元件中的内部电极; 和与内部电极电连接的外部电极。 制造这种热敏电阻的方法包括提供用于形成热敏电阻元件的生坯陶瓷片; 将一些用于形成内部电极的导电膏施加到一些生坯陶瓷片上以形成内部电极层; 用该糊料堆叠生陶瓷片和生陶瓷片以形成生坯; 点燃生坯以获得烧制的压块; 并形成外部电极。