Ba掺杂对Pb(Zr,Ti,Sb)O_3压电陶瓷Curie温度与压电性能的影响  

EFFECTS OF BARIUM DOPING ON THE CURIE TEMPERATURE AND PIEZOELECTRIC PROPERTIES OF Pb(Zr,Ti,Sb)O_3 PIEZOELECTRIC CERAMICS

作　　者：冯玉华[1] 潘铁政 沈湘黔[1] 宋浩杰[1] 过丽萍[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]攀特电陶科技有限公司,江苏昆山215300

出　　处：《硅酸盐学报》2010年第8期1374-1378,共5页Journal of The Chinese Ceramic Society

基　　金：中国博士后基金(20090451169);昆山市科技攻关(KC0810)基金项目

摘　　要：用传统固相法制备了组成为0.98Pb1.0–xBaxTi0.48Zr0.52O3–0.02PbSbO3(x=0.18～0.24)的Ba掺杂Pb(Zr,Ti,Sb)O3(PSZT)压电陶瓷。通过X射线衍射和Raman光谱研究了Ba掺杂PSZT陶瓷的结构,并测量和分析了Ba掺杂对PSZT压电陶瓷的Curie温度和压电性能的影响。结果表明:Ba掺杂影响PSZT陶瓷中四方相和三方相的转化过程、两相比例、晶粒大小并导致四方相的晶格畸变。随Ba含量(x)从0.18增加到0.24,PSZT陶瓷的Curie温度从189℃几乎线性下降到141℃;当Ba掺杂量为0.22时,PSZT陶瓷的Curie温度为156℃,压电应变常数d33为578pC/N,机电耦合系数Kp为0.63,机械品质因数Qm为37.3。The Ba-doped Pb（Zr,Ti,Sb）O3 （PSZT） ceramics with compositions of 0.98Pb1.0–xBaxTi0.48Zr0.52O3–0.02PbSbO3 （x = 0.18– 0.24） were prepared by a conventional solid reaction process. The structure of the Ba-doped PSZT ceramics was investigated by X-ray diffraction and Raman spectra,and the effects of Ba-doping on Curie temperature and piezoelectric property were analyzed. The Ba-doping affects the transition and composition ratio of tetragonal and rhombohedral phases,and grain sizes as well. It also leads to the lattice distortion of tetragonal phase in Ba-doped PSZT ceramics. Its Curie temperature almost linearly decreases from 189 to 141 ℃ corresponding to the barium content （x value） from 0.18 to 0.24 in PSZT ceramics. As the barium content is 0.22,the Curie temperature,piezoelectric strain constant d33,and mechanical quality factor Qm and electromechanical coupling factor kp of PSZT ceramic are 156 ℃,578 pC/N,0.63 and 37.3,respectively.

关 键 词：锑锆钛酸铅 压电陶瓷 掺杂 CURIE温度 压电性能 

分 类 号：TM282[一般工业技术—材料科学与工程]