Na_(0.5)Bi_(0.5)TiO_3基无铅压电织构陶瓷的制备  

The Preparation of Na_(0.5)Bi_(0.5)TiO_3-based Textured Ceramics

作　　者：姚永红[1,2] 高峰[2] 田长生[2] 

机构地区：[1]陕西工业职业技术学院材料工程系,陕西咸阳712000 [2]西北工业大学材料学院,陕西西安710072

出　　处：《咸阳师范学院学报》2009年第2期39-42,共4页Journal of Xianyang Normal University

基　　金：航空科学基金资助项目(03G53036)

摘　　要：选择0.92Na0.5Bi0.5TiO3-0.08BaTiO3作为研究对象,以具有各向异性的一维针状和二维片状的籽晶作为模板,采用(反应)模板生长法法制备无铅压电织构陶瓷。结果表明:以片状Bi2.5Na3.5Nb5O18为籽晶模板制备了0.92Na0.5Bi0.5TiO3-0.08 BaTiO3织构陶瓷,而以针状KSr2Nb5O15为籽晶模板未制备出织构陶瓷,其主要原因是针状KSr2Nb5O15定向分布困难,其表面存在晶体缺陷而导致晶粒异常生长而未获得织构陶瓷。Taking 0.92Na0.5Bi0.5TiO3-0.08BaTiO3 as the object of studying, a lead-free textured piezoelectric ceramics was fabricated by （Reactive） Templated Grain Growth method with the needle-like and plate-like particles as templates. The results show that 0.92Na0.5B0.5TiO3-0.08BaTiO3 textured ceramics was achieved with the plate-like Bi2.5Na3.5Nb5O18 and wasn＇t formed with the needle-like KSr2Nb5O15. The main reasons are that KSr2Nb5O15 can＇t be arranged directionally and the crystal defects on the surface result in abnormal growth of the grains.

关 键 词：无铅压电陶瓷 反应模板生长法 织构 

分 类 号：TM282[一般工业技术—材料科学与工程]