机械激活前驱体法制备具有异向生长特征的BaTiO_3膜  

BaTiO_3 Film with Anisotropic Grain Growth Prepared Through Mechanical Activation Precursor Method

作　　者：高倩[1] 尤金发[1] 陈晓虎[1] 

机构地区：[1]华侨大学材料科学与工程学院,厦门361021

出　　处：《硅酸盐通报》2013年第7期1417-1419,1426,共4页Bulletin of the Chinese Ceramic Society

摘　　要：采用高能球磨法对合成BaTiO3的原料混合体系进行高球料比的机械激活处理,经高温固相反应在氧化铝基片上制备了BaTiO3膜。利用X射线(XRD)和扫描电镜(SEM)等手段对试样的成分、结构及表面形貌进行表征分析,研究结果表明利用高能球磨法,以八水氢氧化钡和二氧化钛为主要原料,在球料质量比为30∶1,球磨介质为氧化锆球和尼龙罐,球磨时间为20 h的参数条件下激活的粉体经1350℃下高温烧结3 h合成的BaTiO3膜成分单一,且具有明显的异向生长特征。BaTiO3 film with anisotropic grain growth was prepared on Al2O3 substrate through the mechanical activated powder mixtures and high temperature solid state reaction.Using of XRD and SEM analysis monitor phase evolution during synthesis and material microscope structure changes.It was shown that BaTiO3 film synthesized has clear anisotropic grain growth with barium hydroxide and TiO2 as the main raw materials,under the condition of ball powder ratio of 30 ∶ 1,milling time of 20 h by mechanical activation method and sintering 3 h at 1350 ℃.

关 键 词：钛酸钡 机械激活 异向生长 

分 类 号：TQ174[化学工程—陶瓷工业]