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采用传统的电子陶瓷制备工艺制备了一系列0.93Bi0.5Na0.5TiO3-0.07(Ba1-xAx)TiO3(简写为BNBAT100x;其中A=Ca,Sr,x=0.02,0.04,0.06,0.08,0.10)陶瓷,研究了陶瓷的结构、介电、压电性能变化特征。XRD分析表明,陶瓷样品均形成了单一的钙钛矿结构固溶体。陶瓷的介电、压电性能受Ca,Sr含量的影响显著。所有陶瓷样品表现出弥散相变特征。当x<0.08时,BNBCT陶瓷的介电常数大于BNBST陶瓷,同时,BNBCT陶瓷室温介电常数在x=0.04时达到最大,而BNBST陶瓷此时具有最小的室温介电常数。陶瓷的压电性能受Ca,Sr含量的显著影响,当Ca含量为6mol%时,压电常数(d33)和平面机电耦合(kp)达到最大,分别为140.5pC/N和19.7%。而当Sr含量为4mol%时,BNBST陶瓷的压电常数(d33)达到最大为139.8pC/N,此时平面机电耦合(kp)为18.9%。
Abstract：The 0.93Bi0.5Na0.5TiO3-0.07(Ba1-xAx) TiO3 (abbreviated to BNBAT100x,A=Ca,Sr,x = 0.02, 0.04, 0.06, 0.08, 0.10) lead-free piezoelectric ceramics were prepared by the conventional ceramic technique. The crystal structure, dielectric and piezoelectric properties of the ceramics were investigated. The X-ray diffraction (XRD) analysis showed that all the ceramics formed single-phase solid solutions with perovskite structure. The dielectric and piezoelectric properties of the ceramics were affected obviously by the content of Ca, Sr. The ceramics showed the characteristics of diffusion phase transition. BNBCT ceramics showed larger dielectric properties than the ceramics of BNBST when x<0.08. The piezoelectric constant, d33, of the BNBCT and BNBST ceramics were enhanced with the increase of Ca,Sr content and then tended to decrease. The maximum value of d33 was 140pC/N and 139.8 pC/N when the adding amount of Ca,Sr were 0.06mol and 0.04mol, respectively.
[1]高兰芳,黄焱球,刘春凤等.(1-x)BaTiO3-xBi0.5Na0.5TiO3陶瓷的微结构与介电性能究[J].中国陶瓷,2008,44(4):18
[2]Seung-Eek Park,Kug Sun Hong.Phase relations in the system of(Na1/2Bi1/2)TiO3-PbTiO3[J].J Appl Phys,1996,79(1):383-389
[3]吴裕功,马晋毅,董向红等.(Bi1/2Na1/2)TiO3-SrTiO3无铅压电陶瓷的介电、压电性能[J].压电与声光,2000,22(6):370-372
[4]Atsushi S,Tatsuya C,Youichi M.Dielectric and piezoelectric properties of(Bi1/2Na1/2)TiO3-(Bi1/2K1/2)TiO3systems[J].Jpn J Appl Phys,1999,38:5564-5567
[5]Li Y M,Chen W,Zhou J,et a1.Dielectric and piezoelectric properties of lead free(Na0.5Bi0.5)TiO3-NaNbO3ceramics[J].Materials Science&Engineering,2004,B112:5-9
[6]Takenaka T,Maruyama K,Sakata K.(Bi1/2Na1/2)TiO3-BaTiO3System for Lead-free Piezoelectric Ceramics[J].Jpn J Appl Phys,1991,30(9B):2236-2239
[7]孙清池,陆翠敏,徐明霞.MnO2和Nb2O5掺杂Pb(Mn1/3Sb2/3)0.05Zr0.47Ti0.48O3压电陶瓷性能的研究[J].稀有金属材料与工程,2006,35(7):1101-1102
[8]陈书涛,徐庆,陈文等.(Na0.5Bi0.5)TiO3-BaTiO3的合成与压电性能.材料研究学报,2004,18(5):526
[9]初宝进,李国荣,江向平等.Na0.5Bi0.5TiO3-BaTiO3系陶瓷压电性及弛豫相变研究.无机材料学报,2000,15(5):815-821
[10]Kreisel J,Glazer A M,Bouvier P,et al.High-pressure raman study of a relaxor ferroelectric of the Na0.5Bi0.5TiO3perovskite[J].Physical Review B,2001,63(2):1-10
[11]Takenaka T,Maruyama K,Sakata K.(Bi1/2Na1/2)TiO3-BaTiO3System for Lead-free Piezoelectric Ceramics[J].Jpn J Appl Phys,1991,30(9B):2236-2239
[12]X.M.Chen,T.Wang,J.Li.Dielectric characteristics and their field dependence of(Ba,Ca)TiO3ceramics[J].Mater.Sci.Eng.B,2004,113:117-120
基本信息:
DOI：10.16521/j.cnki.issn.1001-9642.2009.03.012
中图分类号:TM282
引用信息:
[1]周如东,刘甜甜,刘萌萌,等.Ca,Sr掺杂BNT-BT压电陶瓷结构与性能研究[J].中国陶瓷,2009,45(03):20-24.DOI:10.16521/j.cnki.issn.1001-9642.2009.03.012.
2009-03-15
2009-03-15