直接反应烧结法制备(Ba_(1-x)Ca_x)(Ti_(0.85)Zr_(0.15))O_3陶瓷的微观结构和电性能研究  

Study on the microstructure and electrical properties of (Ba_(1-x) Ca_x )(Ti_(0. 85) Zr_(0. 15)) O_3 ceramics prepared by direct reaction sintering method

作　　者：陈明丽[1] 仇红[1] 李敏[1] 徐志军[1] 初瑞清[1] 马帅[1] 姬万滨[1] 李国荣[2] 

机构地区：[1]聊城大学材料科学与工程学院,山东聊城252059 [2]中国科学院上海硅酸盐研究所,上海200050

出　　处：《功能材料》2014年第1期143-146,共4页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2013AA030501);山东省自然科学基金资助项目(ZR2012EMM004);山东省博士基金资助项目(BS2010CL010);聊城大学大学生创新基金资助项目(SF2012003)

摘　　要：采用直接反应烧结法制备了(Ba1-x Ca x)(Ti0.85Zr0.15)O3无铅压电陶瓷,分析了不同的Ca含量时陶瓷的晶相结构、微观结构、密度及电性能。结果表明,采用直接反应烧结法制备的(Ba1-x Ca x)(Ti0.85Zr0.15)O3无铅压电陶瓷具有纯的钙钛矿相结构;微观结构致密,晶粒大小比较均匀,陶瓷样品出现较大的直径收缩率(25%左右);随着Ca含量的增加陶瓷的居里温度略微降低,室温介电常数出现较大增加,压电常数变大,其中x=0.15时压电性能最好,d33为208 pC/N。（Ba1 -x Cax ）（Ti0.85 Zr0.1 5 ）O 3 （x =0-0.15）lead-free piezoceramics were prepared by direct reaction sinte-ring method.The phase structure,microstructure,density and electrical properties of the ceramics with differ-ent Ca contents were analyzed.The ceramics prepared by direct reaction sintering method possessed pure per-ovskite phase structure.The ceramics showed compact microstructure and large diameter shrinkage.The Curie temperatures of the samples slightly decreased for all the samples.The piezoelectric constant d 3 3 increased grad-ually with increasing the Ca content.When x =0.15 the sample possessed largest piezoelectric constant of 208 pC/N.

关 键 词：直接反应烧结法 BaTiO3基压电陶瓷 相结构 微观结构 电性能 

分 类 号：TM223[一般工业技术—材料科学与工程]