PZT-PMN压电陶瓷的制备和压电性能的研究  

Preparation of PZT-PMN Ceramics and Piezoelectric Characteristics

作　　者：吕宇强[1] 胡明[1] 吴裕功[1] 颜海洋[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《压电与声光》2007年第5期568-570,共3页Piezoelectrics & Acoustooptics

摘　　要：先驱体法制备了具有高纯钙钛矿相的Pb（Zr1/2Ti1/2）1-x（Nb2/3Mg1/3）xO3（PZT-PMN）体系压电陶瓷。按配比在650-800℃预烧合成了B位（ZrTiO4）1-x-（MgNb2O6）x的固溶体,X-射线衍射（XRD）分析表明了该B位先驱体氧化物在750℃预合成后呈类似ZrTiO4的单相结构,用该B位先驱体与PbCO3煅烧后可生成具有高纯的钙钛矿相的陶瓷粉料。通过对体系压电性能与配比x的关系研究发现,在准同型相界附近四方相一侧的配比x=0.1处,该系统压电性能达最大。通过掺杂Nb^5＋含量为0.02可使机电耦合系数（kp）达到0.637。The Pb（Zr1/2Ti1/2）1-x（Nb2/3Mg1/3）xO3 （PZT-PMN） system piezoelectric ceramics with a high perovskite yield were prepared by the B-slte prescursor method. The B-site components of （ZrTiO4）1-x-（MgNb2O6）x solid solution was pre-reacted at 650-800℃. PbCO3 was then added to the B-site prescursor , which was further calcined to form a perovskhe structure. The B-slte phase and perovskite phase contents were obtained from X-ray analyses. Piezoelectric property of sintered pellets were measured as functions of composition x in the Pb（Zr1/2Ti1/2）1-x（Nb2/3Mg1/3）xO3 system. It was found that the optimal piezoelectric property was obtained of at the x= 0.1 in the tetragonal phase region close to morphotropic phase boundary（MPB）. When it was doped with 0.02 Nb^5＋ , the kp was high up to 0. 637.

关 键 词：钙钛矿 钛酸锆 焦绿石相 先驱体法 压电性能 

分 类 号：TM221[一般工业技术—材料科学与工程]