人工晶体学报2018，Vol.47Issue(2)：338-342,5.
Sb掺杂K0.5Na0.5NbO3无铅压电陶瓷相结构和电学性能的研究
Phase Structural and Electrical Properties of Sb-Doped K0.5Na0.5NbO3Lead-free Piezoceramics
摘要
Abstract
Lead-free piezoelectric ceramics(K0.5Na0.5)Nb1-xSbxO3(KNNS, x=0,0.01,0.02,0.03 and 0.04)were synthesized by conventional solid state sintering method at 1080 ℃.The effect of Sb doping on the phase structure,microscopic morphology and electrical properties of KNN ceramics samples was investigated.The results show that Sb can replace the Nb in B site of the perovskite structure,and the maximum amount of Sb in the KNN structure was 0.03-0.04.The analysis of XRD patterns shows that the ceramic have a single orthorhombic phase structure when x=0,a co-existed phases orthorhombic and tetragonal phases structure at 0.02≤x≤0.03, and transformed into the rhombohedral phase at x=0.04.The doping of Sb has the function of refining grain.With increaseing the Sb content,the average grain size decreases,the grain size becomes uniform and the dielectric performance were enhanced.关键词
无铅压电陶瓷/固相烧结法/KNN/钙钛矿结构/掺杂改性Key words
lead-free piezoelectric ceramics/solid state sintering method/KNN/perovskite structure/doping modification分类
信息技术与安全科学引用本文复制引用
郭根生,严继康,徐腾威,李震宇,易健宏,甘国友..Sb掺杂K0.5Na0.5NbO3无铅压电陶瓷相结构和电学性能的研究[J].人工晶体学报,2018,47(2):338-342,5.基金项目
国家自然科学基金(51262017,51362017) （51262017,51362017）
稀贵金属先进材料协同创新基金(14051708) （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) （SKL-SPM-201502）
