激光辐照Ba_(0.5)Sr_(1.5)Na_(0.6)K_(0.4)Nb_5O_(15)压电陶瓷研究  

Investigation of laser irradiation on Ba_(0.5)Sr_(1.5)Na_(0.6)K_(0.4)Nb_5O_(15) piezoelectric ceramics

作　　者：杜新宇[1] 季凌飞[1] 蒋毅坚[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100022

出　　处：《光电子．激光》2009年第2期193-195,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(10674041);北京市自然科学基金资助项目(2052003);北京市属市管高等学校人才强教计划资助项目;北京市科技新星计划资助课题(2006B11)

摘　　要：采用CO2激光辐照方法,Ba0.5Sr1.5Na0.6K0.4Nb5O15(BSKNN)陶瓷压电性能得到显著提高。其最佳辐照工艺参数为:辐照功率密度Pmax=764.33 W/cm2,辐照时间t=90 s。与未辐照样品相比,激光辐照后BSKNN陶瓷压电常数有显著提高,d15从61.6 pC/N提高到了120.0 pC/N。采用X射线衍射和扫描电镜,分析了激光辐照BSKNN陶瓷的物相、显微结构和性能改变的机理。The tungsten bronze Ba0.5Sr1.5Na0.6K0.4Nb5O15(BSKNN) ceramics with significantly enhanced piezoelectric constants d15,from 61.6 pC/N to 120.0 pC/N are prepared by CO2 laser irradiation.The optimal process parameters are as follows:irradiation power density Pmax=764.33 W/cm2 and irradiation time t=90 s.The intrinsic reason of the enhancement of the piezoelectric properties is studied by SEM and XRD.

关 键 词：激光辐照 无铅压电陶瓷 压电常数 

分 类 号：TN249[电子电信—物理电子学]