Pr_6O_(11)掺杂锑锰锆钛酸铅压电陶瓷的温度稳定性  

TEMPERATURE STABILITY OF Pr_6O_(11)-DOPED LEAD ANTIMONY-MANGANESE ZIRCONATE TITANATE PIEZOELECTRIC CERAMICS

作　　者：岳华瑾[1] 孙清池[1] 陆翠敏[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《硅酸盐学报》2006年第9期1050-1054,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然基金委重点基金(10232030);天津大学先进陶瓷与加工技术教育部重点实验室(x06050)资助项目

摘　　要：探讨了Pr6O11掺杂对锑锰锆钛酸铅Pb(Mn1/3Sb2/3)0.05Zr0.47Ti0.48O3(leadantimony-manganesezirconatetitanate,PMSZT)压电陶瓷温度稳定性的影响。测定和分析了样品的谐振频率fr,弹性柔顺系数S11E,相对介电常数εr,横向机电耦合系数K31,压电系数d31在-20～80℃之间随温度的变化。结果表明:与未掺杂的样品相比,掺杂适量Pr6O11的PMSZT陶瓷具有较低的Curie温度,而且体系的压电系数d31的温度稳定性较好,同时机电耦合系数K31的温度稳定性也得到了改善。当掺杂Pr6O11的质量分数为0.05%时,能得到机电性能优良的压电陶瓷,εr=1650,tanδ=0.006,d33=350pC/N,平面机电耦合系数Kp=0.67,机械品质因数Qm=2000。Effects of Pr6O11 doping on the properties of Pb（Mn1/3Sb2/3）0.05Zr0.47Ti0.48O3 （lead antimony-manganese zirconate titanate, PMSZT） ceramics were studied. The resonance frequency fr, elastic compliance constant S11^E relative dielectric constant εr, transverse electromechanical coupling factor K31 and piezoelectric constant d31 of the PMSZT ceramics were measured as a function of temperature between -20℃ and 80℃. The results show that the temperature stability of properly doped piezoelectric ceramics is better than that for no dopant. The Curie temperature moves toward lower temperatures and the changes of resonant frequency are all positive with the increase of temperature when Pr6O11 additive is increased. A PMSZT ceramic with 0.05% in mass Pr6Oll doping and more excellent electric properties was obtained, including an er of 1 650, d33 of 350 pC/N, a planar electromechanical coupling factor Kpof0.67, and a mechanical quality factor Qm of 2 000.

关 键 词：锑锰锆钛酸铅 氧化镨掺杂 温度稳定性 电性能 显微结构 

分 类 号：TM282[一般工业技术—材料科学与工程]