共沉淀法合成PbZrO3粉体  

Synthesis of PbZrO_3 Powder by a Coprecipitation Method

作　　者：刘涌[1] 徐刚[1] 宋晨路[1] 韩高荣[1] 

机构地区：[1]浙江大学,硅材料国家重点实验室,浙江杭州310027

出　　处：《稀有金属材料与工程》2008年第A02期423-425,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(50452003)

摘　　要：锆酸铅(PbZrO3,PZ)作为典型的ABO3型钙钛矿材料,在500 K附近发生从顺电相到反铁电相的相转变。以硝酸铅、氧氯化锆为原料,氨水为沉淀剂,采用共沉淀方法成功合成了PbZrO3粉体。利用差热分析(DTA)和热失重分析(TG)研究了共沉淀前驱体的热行为,利用XRD跟踪粉体的相演化,研究了煅烧温度对钙钛矿相锆钛酸铅形成的影响。发现共沉淀加强了Pb、Zr离子的混合,促进了钙钛矿相锆钛酸铅的形成,经600℃低温煅烧便可获得结晶良好的钙钛矿相PbZrO3粉体。Lead zirconate （PbZrO3, PZ） is a typical ABO3 perovskite with the antiferroelectric to paraelectric phase transition at 500 K. In this paper the PbZrO3 powder was prepared by coprecipitation in aqueous medium. The washed coprecipitates were calcined to yield the PZ powders. And the formation of PbZrO3 was studied and characterized by thermal analysis and XRD. Well-crystallized pure perovskite phase PZ powders were obtained after the precursor powder calcined at 600 ℃ for 2 h.

关 键 词：锆钛酸铅 铁电 合成 共沉淀 

分 类 号：TM221[一般工业技术—材料科学与工程]