(Ba0．85Ca0．15)(Ti0．90Zr0.06Sn0．04)O3-Fe2O3无铅压电陶瓷的性能研究  

Properties of(Ba_(0.85)Ca_(0.15))(Ti_(0.90)Zr_(0.06)Sn_(0.04))O_3-Fe_2O_3 Lead-free Ceramics

作　　者：于坤[1] 江向平[1] 邵虹[1] 陈超[1] 李小红[1] 

机构地区：[1]景德镇陶瓷学院材料科学与工程学院、江西省先进陶瓷材料重点实验室,景德镇333001

出　　处：《硅酸盐通报》2014年第7期1604-1608,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51062005,91022027);江西省自然科学基金(2010GQW0037,2010GQW0038,20114BAB216018);江西省研究生创新资金

摘　　要：采用固相法制备了(Ba0.85Ca0.15)(Ti0.90Zr0.06Sn0.04)O3-xmol%Fe2O3(简写为BCTZS-xFe)无铅压电陶瓷。研究了不同掺杂量对该陶瓷的显微结构、介电、铁电及压电性能的影响。结果表明,所有样品均具有单一的钙钛矿结构,少量掺杂能使晶粒长大,提高电性能。在x=0.025时,具有最佳的综合电性能,压电常数d33=515 pC/N,机电耦合系数kp=48.2%,机械品质因数Qm=182,2Pr=18.2μC/cm2,2Ec=4.3 kV/cm,介电常数εr=5175。Fe2O3 -doped （Ba0.85Ca0.15）（Ti0.90Zr0.06Sn0.04）O3-Fe2O3 lead-free ceramics were prepared by the conventional solid-state method. The influence of Fe203 content on the microstructure, dielectric, ferroelectric and piezoelectric properties are investigated. The results show that all the samples possess a pure perovskite phase structure. A small amount of doping can make the grain size growth and improve the electrical properties. With the doping of 0. 025 Fe203, the BCTZS ceramics show the optimum electrical properties, piezoelectric constant d33 = 515 pC/N, electromechanical coupling factor kp = 48. 2%, mechanical quality factor Qm = 182, 2Pr = 18.2 μC/cm2 ,2Ec = 4.3 kV/cm and permittivity εr = 5175.

关 键 词：FeO3 (Ba0 85Ca0 15)(Ti0 90Zr0 06Sn0 04)O3 压电性能 无铅压电陶瓷 

分 类 号：TQ174[化学工程—陶瓷工业]