水热法合成K_(0.5)Bi_(0.5)TiO_3纳米陶瓷粉体  

Hydrothermal Synthesis of K_(0.5)Bi_(0.5)TiO_3 Lead-free Piezoelectric Ceramic

作　　者：侯磊[1] 侯育冬[1] 宋雪梅[1] 朱满康[1] 汪浩[1] 严辉[2] 

机构地区：[1]教育部新型功能材料重点实验室北京工业大学材料科学与工程学院 [2]教育部新型功能材料重点实验室北京工业大学材料科学与工程学院,北京100022

出　　处：《无机化学学报》2006年第3期563-566,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目(No.60576012);北京市"拔尖创新人才选拔计划"资助项目。

摘　　要：K0.5Bi0.5TiO3(KBT)nanocrystalline particles were hydrothermally synthesized from Bi(NO3)3·5H2O, TiO2 and KOH. The crystal phase, chemical composition and microstructure were characterized by XRD, XRF, Raman scattering spectroscopy and TEM. The results indicated that the products were pure perovskite structured K0.5Bi0.5TiO3 with chemical stoichiometry and perovskite structure. The TEM observation revealed that the particles possessed a feature of cubic shape and a nano-scale of about 40 nm. The KBT ceramics sintered at 1 040 ℃ from hydrothermal powders show higher density and better electric properties than that prepared by a solid-state reaction method.K0.5Bi0.5TiO3（KBT）nanocrystalline particles were hydrothermally synthesized from Bi（NO3）3·5H2O, TiO2 and KOH. The crystal phase, chemical composition and microstructure were characterized by XRD, XRF, Raman scattering spectroscopy and TEM. The results indicated that the products were pure perovskite structured K0.5Bi0.5TiO3 with chemical stoichiometry and perovskite structure. The TEM observation revealed that the particles possessed a feature of cubic shape and a nano-scale of about 40 nm. The KBT ceramics sintered at 1040 ℃ from hydrothermal powders show higher density and better electric properties than that prepared by a solid-state reaction method.

关 键 词：水热法 钛酸铋钾 无铅压电陶瓷 

分 类 号：O612.4[理学—无机化学] TM223[理学—化学]