%0 Journal Article
%T Sintering Characteristic and Piezoelectric Properties of Lead-free (K0.5 Na0.5)NbO3-LiNbO3 Ceramics<br>NbO3-LiNbO3无铅压电陶瓷的烧结特性和压电性能研究
%A TANG Fu-Sheng
%A DU Hong-Liang
%A LIU Dai-Jun
%A LUO Fa
%A ZHOU Wan-Cheng
%A <br>唐福生
%A 杜红亮
%A 刘代军
%A 罗 发
%A 周万城
%J 无机材料学报
%D 2007
%I Science Press
%X Lead-free (1 - x)(K0.5Na0.5)NbO3-xLiNbO3 piezoelectric ceramics were prepared by a traditional ceramic processing. The sintering characteristic, the microstructure and electrical properties of (K0.5Na0.5)NbO3-LiNbO3 ceramics were investigated. Results show that all specimens exhibit a pure per-ovskite structure and the phase structure at room temperature transforms from orthorhombic to tetragonal with the increase of LiNbO3.The microstructure of (K0.5Na0.5)NbO3-LiNbO3 ceramics exhibits apparent difference due to different amounts of LiNbO3. The sinterability of (K0.5Na0.5)NbO3-LiNbO3 is improved and the sintering temperature is lower than that of pure KNN ceramics. The (1 - x)(K0.5Na0.5)NbO3-xLiNbO3 (x=0.06) ceramics exhibits an excellent piezoelectric properties with the piezoelectric constant d33, the electromechanical coupling coefficients kp and kt of 205pC/N, 40.3% and 49.8%, respectively.
%K (K0
%K 5Na0
%K 5)NbO3-LiNbO3<br>无铅压电陶瓷
%K 压电性能
%K 钙钛矿结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=D510125A7DBCF201&yid=A732AF04DDA03BB3&vid=BC12EA701C895178&iid=0B39A22176CE99FB&sid=892C6E385D640C1E&eid=170CE8B011EA4FD9&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=23