Improvement in the piezoelectric temperature stability of(K_(0.5)Na_(0.5))NbO_3 ceramics  

作　　者：ZHAO JingBo DU HongLiang QU ShaoBo ZHANG HongMei XU Zhuo 

机构地区：[1]The College of Science, Air Force Engineering University, Xi'an 710051, China [2]State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China [3]Electronic Materials Research Laboratory, Key Laboratory of Educational Ministry, Xi'an Jiaotong University, Xi'an 710049, China

出　　处：《Chinese Science Bulletin》2011年第22期2389-2393,共5页

基　　金：supported by the National Natural Science Foundation of China(10804130,60871027);the Shaanxi Provincial Natural Science Foundation(2009JQ1001);the Key Laboratory of Electrical Insulation and Power Equipment(EIPE10202)

摘　　要：Through an analysis of the temperature stability of(K0.5Na0.5)NbO3(KNN)based ceramics and KNN solid solutions,we propose a method to enhance the temperature stability of KNN materials.These materials are valuable for their piezoelectric properties.To verify the feasibility of this method,0.9(K1-xNax)NbO3-0.06LiNbO3-0.04CaTiO3(KNLN-CaTiO3)ceramics were designed,and their structure and properties were studied.The results show that KNLN-CaTiO3(x=0.54)ceramics have a good temperature stability over a wide temperature range(25-320°C).Also,they have good piezoelectric properties(d33=152 pC/N in x=0.54).This result confirms the feasibility of our proposed solution for improving the piezoelectric properties of KNN-based ceramics that have poor temperature stability.Through an analysis of the temperature stability of （K0.5Na0.5）NbO3 （KNN） based ceramics and KNN solid solutions, we propose a method to enhance the temperature stability of KNN materials. These materials are valuable for their piezoelectric properties. To verify the feasibility of this method, 0.9 （K1-xNax） NbO3-0.06LiNbO3-0.04CaTiO3 （KNLN-CaTiO3） ceramics were designed, and their structure and properties were studied. The results show that KNLN-CaTiO3（x = 0.54） ceramics have a good temperature stability over a wide temperature range （25-320℃）. Also, they have good piezoelectric properties （d33=152 pC/N in x=0.54）. This result confirms the feasibility of our proposed solution for improving the piezoelectric properties of KNN-based ceramics that have poor temperature stability.

关 键 词：温度稳定性 压电性能 陶瓷设计 CATIO3 KNN 温度范围 材料 

分 类 号：TM282[一般工业技术—材料科学与工程]