铁钕掺杂K_(0.5)Na_(0.5)NbO_3陶瓷的压电介电性能  

Piezoelectric and Dielectric Properties of K_(0.5)Na_(0.5)NbO_3 Ceramics with Iron and Neodymium Doping

作　　者：王坦[1] 尹奇异[1] 朱开平[1] 汤晨[1] 鲍美玲[1] 

机构地区：[1]合肥学院化学与材料工程系,安徽合肥230601

出　　处：《广东化工》2013年第8期3-4,共2页Guangdong Chemical Industry

基　　金：安徽省教育厅自然科学基金(No.KJ2013B229);2012年度国家级大学生创新创业训练计划项目(No.201211059005);合肥学院教研项目(No.2012jyxm48)

摘　　要：采用传统陶瓷制备技术制备了新型的K0.5Na0.5NbO3+0.2%molFe2O3+x%molNd2O3压电陶瓷,研究了该体系陶瓷的压电性能及介电性能。研究结果表明,在烧结温度为1120℃、4 h时,该体系陶瓷均具有相对较好的电学性能,并在x为0.2时性能最佳,其压电常数d33为125pC/N,机电耦合系数Kp为37%,机械品质因素Qm为155,介电常数εr为561,介质损耗tanδ为0.08。A new-type K0.5Na0.5NbO3＋0.2 % molFe2O3＋x%molNd2O3 piezoelectric ceramic were prepared by traditional ceramic sintering technique, and their piezoelectric and dielectric properties were also detailedly studied. These results indicate that this new type ceramics sintered at 1165 ℃ for 4 hours have relatively good electrical properties. Particllarly, the ceramic with x=0.04 exhibits optimum electrical properties at room temperature （d33=125 pC/N, k0=37 %, Qm=155, εr=56 1, tanδ=0.08）, which suggests that the ceramic is a promising candidate material for lead-free piezoelectric ceramics.

关 键 词：铌酸钾钠 掺杂 压电性能 介电性能 

分 类 号：TM282[一般工业技术—材料科学与工程]