摘要
自行设计一种以 (Mn1/ 3 Sb2 / 3 ) 4+ B位取代Ti4 + 为特征的新型改性PT压电陶瓷材料 ,典型配方主要性能参数为 :TC=2 52℃、εT3 3 /ε0 =1 60、tgδ =1 % ;d3 3 =70× 1 0 -12 C/N、kt=0 .60、kp≈ 0、kt/kp→∞ ;Qm=4 3、Nt=2 0 0 4Hz·m .该材料具有良好的烧结特性及高厚度机电耦合系数、大压电各向异性、低机械品质因素、小介电常数等优异特性 ,在超声换能器尤其是NDT探头、水听器及宽带高频滤波器的研制上显示出好的应用前景 .
A new modified PbTiO 3 piezoelectric ceramics in which the Ti 4+ is substituted by (Mn 1/3 Sb 2/3 ) 4+ has been designed,based on wide references.The main peformances of the typical composition are as follows: T C= 252 ℃ ,ε T 33 / ε 0 =160,tg δ =1 %; d 33 =70×10 -12 C/N, k t=0.60, k p≈0, k t/ k p→∞; Q m=43, N t=2 004 Hz·m. This materials,possessing good sintering property,high electromechanical coupling factor,large piezoelectric anisotropy,as well as low mechanical quality factors,and small dielectric constants,have great practical prospects in the development of ultrasonic transducers such as NDT probes,hydrophone,high frequency filter with wide band ect.
出处
《湖北大学学报（自然科学版）》
CAS
1999年第3期244-248,共5页
Journal of Hubei University：Natural Science
基金
湖北省科委重点资助项目!( 95 1P0 3 0 3)
关键词
压电陶瓷
改性设计
大各向异性
钛酸铅
PbTiO 3 piezoelectric ceramics
Modification design
Large anisotropy
