发明专利
JP3970588B2 Low-temperature firing of dielectric ceramics, laminated dielectric element, a manufacturing method and auxiliaries oxide of dielectric ceramics
有权
基本信息:
- 专利标题： Low-temperature firing of dielectric ceramics, laminated dielectric element, a manufacturing method and auxiliaries oxide of dielectric ceramics
- 申请号：JP2001364641 申请日：2001-11-29
- 公开(公告)号：JP3970588B2 公开(公告)日：2007-09-05
- 发明人： 悦朗 安田 , 孝史 山本 , 拓実 片岡 , 章 藤井 , 篤宏 角谷 , 仁志 進藤 , 年厚 長屋
- 申请人： 株式会社デンソー , 株式会社日本自動車部品総合研究所
- 专利权人： 株式会社デンソー,株式会社日本自動車部品総合研究所
- 当前专利权人： 株式会社デンソー,株式会社日本自動車部品総合研究所
- 优先权： JP2001364641 2001-11-29; JP2000399948 2000-12-28
- 主分类号： C04B35/00
- IPC分类号： C04B35/00 ; C04B35/49 ; C04B35/491 ; C04B35/497 ; H01B3/12 ; H01L41/083 ; H01L41/107 ; H01L41/187 ; H01L41/22 ; H01L41/273 ; H01L41/333 ; H01L41/39
摘要：
A PZT dielectric ceramic material is sintered at a desired low temperature to prevent deterioration of the performance of the base material. An auxiliary oxide is used that is made by adding the oxide of at least one of tungsten and molybdenum to lead oxide in the following proportions: PbOx+(WO 3 y+MoO 3 z) where x+y+z=1, 0.005 =0. 0.5 mol % to 20 mol % of this auxiliary oxide is added to a mixture of a stock material of dielectric ceramic material or its calcination having a composition of ABO 3 type dielectric ceramic material where 0.9 molar ratio or more lead is included in site A assuming the proportion of site B is 1, and the material is mixed, formed and sintered. The content of tungsten and molybdenum combined is less than 0.098 mole in proportion to 1 mole of lead and the density of the dielectric ceramic material after sintering is 7.5 g/cm 3 larger. The auxiliary oxide is dispersed in the calcined powder to form a liquid phase at a desired temperature, to accelerate the sintering, thus making it possible to sinter at a lower temperature.