摘要
采用传统固相法制备了（1-x）K0.48Na0.52NbO3-xBi0.46Nd0.04（Na0.82K0.18）0.5ZrO3（KNN-xBNNKZ,x=0-0.07）系无铅压电陶瓷,研究了Bi0.46Nd0.04（Na0.82K0.18）0.5ZrO3的引入对KNN基无铅压电陶瓷相结构和电学性能的影响。研究结果表明,BNNKZ的引入能够让KNN陶瓷的正交-四方相变温度（TO-T）向低温方向移动,同时三方-正交相变温度（TR-O）向高温方向移动。
（1-x）K0.48Na0.52NbO3-xBi0.46Nd0.04（Na0.82K0.18）0.5ZrO3（KNN-xBNNKZ,x=0-0.07）lead free piezoelectric ceramics were prepared by the conventional solid-state technique,and the effects of the Bi0.46Nd0.04（Na0.82K0.18）0.5ZrO3 content on the phase structure and electrical properties of KNN-based ceramics were investigated in detail.It was found that the addition of BNNKZ can simultaneously shift the TO-Tand TR-Oto room temperature and finally construct the R-T phase coexistence near room temperature with the compositions of 0.04x≤0.06 and significantly enhance the electric properties.The ceramic with x=0.05 exhibited optimal properties：d33=308pC/N,kp=43%,Pr=23.45μC/cm2,εr=1205,tanδ=3.8%,TC=331 ℃.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2016年第8期8169-8173,共5页
Journal of Functional Materials
基金
西南民族大学中央高校基本科研业务费专项资金资助项目(2014NZYQN11)
关键词
无铅压电陶瓷
KNN
新型相界构建
电学性能
lead-free piezoelectric ceramics potassium-sodium niobate（KNN） phase boundary construction electric properties
