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采用传统固相法制备了(1-x)Bi4Ti3O12-xSrBi2Nb2O9(BIT—SBN,x=0,0.025,0.050,0.100,0.150,0.200)铋层状无铅压电陶瓷。系统研究了SrBi2Nb2O9掺杂对Bi4Ti3O12基陶瓷物相结构、微观结构以及jie电性能的影响。结果表明:所有陶瓷样品均为单一的铋层状结构;当SBN掺量为0.100时,样品具有最佳的电性能:d33=21pC/N,相对密度P=98.1%,机电耦合系数kp=8.26%,εr=220,介电损耗tanδ=0.29%,剩余极化强度Pt