Na0.5K0.44Li0.06Nb0.94Sb0.06O3无铅压电陶瓷的制备与性能研究  

Preparation and Characterization of Na_(0.5)K_(0.44)Li_(0.06)Nb_(0.94)Sb_(0.06)O_3 Lead-free Piezoelectric Ceramics

作　　者：郭根生[1] 李震宇[1] 严继康[1] 易健宏[1] 甘国友[1] GUO Gen-sheng;LI Zhen-yu;YAN Ji-kang;YI Jian-hong;GAN Guo-you(Kunming Key Laboratory of Advanced Materials of Precious,Nonferrous Metals,Key Laboratory of Advanced Materials of Yunnan Province,Ministry of Education,School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学材料科学与工程学院,云南省新材料制备与加工重点实验室,昆明市稀贵及有色金属先进材料重点实验室,昆明650039

出　　处：《硅酸盐通报》2018年第8期2391-2394,2399,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(KKGA201751002);稀贵金属先进材料协同创新基金(14051708);稀贵金属综合利用新技术国家重点实验室开放基金(SKL-SPM-201502).

摘　　要：采用传统固相烧结法制备Na_(0.5)K_(0.44)Li_(0.06)Nb_(0.94)Sb_(0.06)O_3无铅压电陶瓷,研究了烧结温度对陶瓷样品微观结构及电学性能的影响。研究结果表明:烧结温度在1020~1100℃范围内,样品均形成了单一的正交相钙钛矿结构,烧结温度对微观形貌和电学性能有较大影响;与纯KNN陶瓷相比,陶瓷的To-t和Tc均向低温方向移动;当烧结温度为1080℃时晶粒发育比较完全,To-t和Tc分别为45℃和345℃,同时表现出优异的电学性能:d_(33)=200 pC/N,k_p=0.365,tanδ=4.67%.Lead-free piezoceramics Na0.5K0.44Li0.06Nb0.94Sb0.06O3 ceramics were prepared by conventional solid-state sintering method.The effects of sintering temperature on the microstructure and electrical properties of the ceramic samples were investigated.The results show that the pure orthorhombic structure was formed when the samples sintering at 1020-1100℃,the sintering temperature has a great influence on the morphology and electrical properties.The To-t and Te of the ceramics shift to the low temperature compared with the pure KNN ceramics.The results also show that when the sintered temperature at 1080℃,the ceramics are wellsintered.The T0-t and Te of the ceamics are 45℃and 345℃,and excellent piezoelectric and dielectric properties were demonstrated:d33=200 pC/N,kp=0.365,tanδ=4.67%.

关 键 词：无铅压电陶瓷 铌酸钾钠 钙钛矿结构 介电性能 

分 类 号：TM282[一般工业技术—材料科学与工程]