摘要
用前驱体法制备出了BiScO_3-xPbTiO_3-yPb(Yb_(1/2)Nb_(1/2))O_3(BS-xPT-yPYN,y=0.10,0.15,0.20,0.30)压电陶瓷,研究了PYN物质的量分数y对陶瓷微观形貌、物相组成、相结构、铁电性能以及压电性能的影响。结果表明:随着y的增大,BS-xPT-yPYN压电陶瓷的晶粒尺寸逐渐增大,体系发生菱方相向四方相的转变,压电性能逐渐下降;当y=0.10时,压电陶瓷的矫顽电场强度E_c越高,其剩余极化强度P_r的增长越明显。
BiScO3-xPbTiO3-yPb（Yb（1/2）Nb（1/2））O3（BS-xPT-yPYN,y=0.10,0.15,0.20,0.30） piezoelectric ceramics were prepared by the precursor method. The effects of PYN molar fraction y on the microstructure, phase composition, phase structure, ferroelectric and piezoelectric properties of BS-xPT-yPYN ceramics were investigated. The results indicate that when y increased, the grain size of piezoelectric ceramics increased, the transformation from rhombohedral phase to tetragonal phase took place and the piezoelectric properties declined. When the molar fraction of PYN was 0.10, the higher coercive electric field Ec, the more obvious increase residual polarization Pr of piezoelectric ceramics had.
出处
《机械工程材料》
CSCD
北大核心
2017年第5期79-83,88,共6页
Materials For Mechanical Engineering
基金
2015年度江苏省高等职业院校教师国内高级访问学者计划项目(2015FX077)
关键词
BS-PT-PYN压电陶瓷
压电性能
铁电性能
BS-PT-PYN piezoelectric ceramic
piezoelectric propertyl {erroelectric property
