溶胶-凝胶法制备适用于还原性气氛下烧结的钛酸钡基超细粉体  

Non-reducible ultrafine BaTiO3-based ceramic powder prepared by sol-gel method

作　　者：邓佳[1] 纪箴[1] 张跃[1] 

机构地区：[1]北京科技大学材料物理与化学系,北京100083

出　　处：《功能材料》2007年第8期1291-1293,共3页Journal of Functional Materials

基　　金：国家杰出青年基金资助项目(50325209);国家自然科学基金国际合作与交流重大资助项目(50620120439)

摘　　要：以醋酸钡、钛酸四丁酯和冰醋酸为主要原料,采用溶胶-凝胶方法制备出适用于还原气氛下烧结的超细钛酸钡基陶瓷粉体。利用差热分析研究了前驱体的热转变过程。利用XRD分析了在不同烧结温度下,粉体的相结构。利用透射电镜研究了温度对粉体粒度和形貌的影响。实验结果表明,所得干凝胶在600℃度煅烧后就可以得到均匀且均相的掺杂改性钛酸钡粉体。在700℃度煅烧1h后,就可以得到形貌规则,粒度为100nm左右的高纯掺杂改性钛酸钡粉体。　Non-reducible ultrafine BaTiO3-based ceramic powder has been prepared by sol-gel method.The thermal conversion behavior of the corresponding gel was followed by TG-DSC.The phase structure of the powder prepared by different calcining temperature was studied by XRD.The tetragonal phase was observed calcined at 600℃and it was high pure ultrafine doped BaTiO3 powder about 100nm calcined at 700℃/1h.The relation between the powder size and morphology with the calcining temperature was analyzed by TEM.

关 键 词：钛酸钡基陶瓷粉体 超细 溶胶-凝胶 

分 类 号：TM281[一般工业技术—材料科学与工程]