摘要
采用传统陶瓷烧结工艺制备了(K0.44Na0.5Li0.06)(Nb0.94Sb0.06)O3无铅压电陶瓷,研究了不同烧结温度对(K0.44Na0.5Li0.06)(Nb0.89Ta0.05Sb0.06)O3陶瓷的晶相、微观形貌、压电、介电和铁电性能的影响.研究结果表明:在不同烧结温度下,XRD衍射分析表明陶瓷样品都形成了钙钛矿的正交相结构,但具有不同的SEM形貌和电学性能.在烧结温度1 060℃时晶粒发育比较完全,致密性较高;且陶瓷具有最佳的电学性能:d33=233 pC/N,k p=49%,εr=1 172和P r=24μC/cm2.
Lead-free piezoelectric ceramics （K0.44Na0.5Li0.06） （Nb0.94Sb0.06）O3 are fabricated by conventional ceramics sintering technique and sintered at different temperatures （1 020 ～ 1 100 ℃）.The crystalline phase,microstructure,piezoelectric,dielectric and ferroelectric properties are studied in detail.The results of X-ray diffraction show that all the ceramics sintered at different temperatures exhibit a single pure and orthorhombic perovskite structure.But the ceramics sintered at different temperatures show different SEM microstructure and electrical properties.The results also show that when the sintering temperature is 1 060 ℃,the ceramics are well sintered,dense and well crystallized; they also exhibit good electrical properties：d33 =233 pC/N,kp =49%,εr =1 172 and Pr =24 μC/cm2.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第1期122-125,共4页
Journal of Sichuan Normal University（Natural Science）
基金
四川省科技厅应用基础基金(2008JY0107)资助项目
关键词
无铅压电陶瓷
烧结温度
结构
性能
lead-free piezoelectric ceramics
sintering temperature
microstructure
properties
