制备工艺对BaTiO_3陶瓷性能的影响  

Influence of Preparing Process on the Properties of BaTiO 3 Ceramics

作　　者：潘晓光[1] 汤清华[1] 叶龙[1] 

机构地区：[1]华中理工大学固体电子学系

出　　处：《压电与声光》1996年第5期340-345,共6页Piezoelectrics & Acoustooptics

摘　　要：分别采用化学共沉淀法和水热法制备铁电四方相和顺电立方相ＢａＴｉＯ３粉体，然后将它们按一定比例混合，在低氧压条件下烧结成ＢａＴｉＯ３陶瓷。较详细地研究了这种ＰＴＣ效应很低的ＢａＴｉＯ３陶瓷的Ｒ－Ｔ特性、Ｉ－Ｖ特性与制备工艺的关系。BaTiO 3 ceramic powders with ferroelectric tetragonal phases and paraelectric cubic phases have been synthesized respectively by co precipitation and hydrothermal methods. The powder are mixed in a certain proportion and sintered under a low oxygen pressure. A BaTiO 3 ceramics with very low PTC effect is obtained, its relations of R T and I V properties with the preparing process have been investigated in detail, and the conductive mechanism is discussed.

关 键 词：陶瓷 PTC 铁电相 顺电相 

分 类 号：TN304.82[电子电信—物理电子学] TQ174.756[化学工程—陶瓷工业]