当前位置: 首页 > 文章 > 钠过量0.94(K_(0.5)Na_(0.5))NbO_3-0.06LiNbO_3无铅压电陶瓷显微结构和电学性能的研究
西南大学学报(自然科学版)
2017
(12)
185-190
Position: Home > Articles > Microstructure and Electrical Properties of Sodium-Excess 0.94(K_(0.5)Na_(0.5))NbO_3-0.06LiNbO_3 Lead-Free Piezoceramics
Journal of Southwest University(Natural Science Edition)
2017
(12)
185-190
钠过量0.94(K_(0.5)Na_(0.5))NbO_3-0.06LiNbO_3无铅压电陶瓷显微结构和电学性能的研究
作 者：
马余;薛旦旦;陈志谦;蒋显全;刘岗;徐尊平;陈异
单 位：
西南大学材料与能源学部
关键词：
无铅压电陶瓷;KNN;压电性能;钙钛矿
摘 要：
采用固相合成法制备了0.94(K_(0.5)Na_(0.5+x))NbO_3-0.06LiNbO_3无铅压电陶瓷,并对钠过量对陶瓷的晶体结构、显微形貌、电学性能的影响进行了研究.XRD测试结果显示,所研究的所有陶瓷样品均为单一钙钛矿结构,而且在室温下均为正交相和四方相两相共存.当x=0.01时,陶瓷具有最优的压电性能,其压电常数d33、相对介电常数εr、平面机电耦合系数Kp和厚度机电耦合系数Kt分别为255pC/N,850,0.46和0.42.研究结果可以为KNN基压电陶瓷的结构和性能调控提供有益的参考.
译 名：
Microstructure and Electrical Properties of Sodium-Excess 0.94(K_(0.5)Na_(0.5))NbO_3-0.06LiNbO_3 Lead-Free Piezoceramics
作 者：
MA Yu;XUE Dan-dan;CHEN Zhi-qian;JIANG Xian-quan;LIU Gang;XU Zun-ping;CHEN Yi;Faculty of Materials and Energy,Southwest University;
关键词：
lead-free piezoceramics;;potassium sodium niobate(KNN);;piezoelectric property;;perovskite
摘 要：
A 0.94(K_(0.5)Na_(0.5+x))NbO3-0.06 LiNbO_3 lead-free piezoceramics was synthesized with the solidstate reaction method,and its crystal structure,microstructure,and electrical properties were investigated.The X-ray diffraction results showed that all samples of the studied ceramics possessed a pure perovskite structure,and orthorhombic and tetragonal phases co-existed at room temperature.When x=0.01,the ceramics showed the optimum piezoelectric properties,and the piezoelectric constant d33,relative dielectric constantεr,planar electromechanical coupling factor Kpand thickness electromechanical coupling factor Kt were 255 pC/N,850,0.46 and 0.42,respectively.The research results in this paper could provide a beneficial reference for the regulation of the structure and properties in KNN-based piezoelectric ceramics.
导出引用
计量
文章访问数: 10
HTML全文浏览量: 0
PDF下载量: 0
所属期刊
