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Pr_6O_(11)掺杂锑锰锆钛酸铅压电陶瓷的温度稳定性
作者:岳华瑾 孙清池 陆翠敏  
单位:天津大学材料科学与工程学院 天津大学材料科学与工程学院 天津大学材料科学与工程学院 天津300072 天津300072 天津300072 
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
出版年,卷(期):页码:2006,34(9):1050-1054
DOI:
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。
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Effects of Pr6O11 doping on the properties of Pb(Mn1/3Sb2/3)0.05Zr0.47Ti0.48 O3 (lead antimony-manganese zirconate titanate, PMSZT) ceramics were studied. The resonance frequency fr, elastic compliance constant S11E, 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 Pr6O11 doping and more excel- lent electric properties was obtained, including an εr of 1 650, d33 of 350 pC/N, a planar electromechanical coupling factor Kp of 0.67, and a mechanical quality factor Qm of 2 000.
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基金项目:
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
作者简介:
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参考文献:
[1]马海峰,周桃生.压电陶瓷机械品质因数Qm及其温度稳定性[J].湖北大学学报,2003,25(1):49-52.MA Haifeng,ZHOU Taosheng.J Hubei Univ(inChinese),2003,25(1):49-52. [2]AJAI GARG,AGRAWAL D C.Effect of rare earth(Er,Gd,Eu,Nd and La)and bismuth additives on the mechanical and piezoelectric proper-ties of lead zirconate titanate ceramics[J].Mater Sci Eng,2001,86:134-143. [3]HERTLING G.H,LAND CE.Hot pressed PLZT ferroelectric ceramics for electro-optic applications[J].J Am Ceram Soc,1971,54(1):1-11. [4]CHEN M,LIU Z L,WANG Y.Ferroelectric properties of Pr6O11-doped Bi4Ti3O12[J].Solid State Commun,2004,130:735-739. [5]周飞,龙记文,孟中岩.铌掺杂PMS-PZ-PT三元系压电陶瓷温度稳定性研究[J].无机材料学报,2004,19(5):586-592.ZHOU Fei,LONG Jiwen,MENG Zhongyan.J Inorg Mater(in Chi-nese),2004,19(5):586-592. [6]钟维烈.压电物理学[M].北京:科学出版社,2000.452-453.ZHONG Weilie.Physics of Ferroelectrics(in Chinese).Beijing:Sci-ence Press,2000.452-453.
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