不同反应物和工艺条件对CeO_2/ZrO_2复合纳米粉末性能的影响  

Effects of Different Raw Materials and Technologies on Properties of Nano-CeO_2/ZrO_2 Composite Powders

作　　者：罗明忠[1] 陈沙鸥[1] 邵渭泉[1] 朱海玲[1] 葛晓辉[1] 

机构地区：[1]青岛大学理工学院物理系,山东青岛266071

出　　处：《青岛大学学报（自然科学版）》2005年第1期48-52,共5页Journal of Qingdao University(Natural Science Edition)

基　　金：山东省自然科学基金项目(Y2000F08)

摘　　要：分别采用ZrOCl2·8H2O、CeCl3·7H2O和ZrOCl2·8H2O、CeO2、HCl两类不同反应物,利用共沉淀法制备了氧化铈摩尔含量为12%的氧化铈/氧化锆复合纳米粉末。分析了实验过程中沉淀物未经醇洗和经过醇洗、常规干燥及微波干燥等不同工艺条件对所得复合粉料性能的影响。通过透射电镜(TEM)对粉末形貌及粒径观察和测定,以及X射线衍射法(XRD)对粉末的物相分析,表明以ZrOCl2·8H2O和CeCl2·7H2O为反应物所得凝胶,经过醇洗及微波干燥的方法可以得到21nm左右且均匀性和分散性好的球形颗粒。The two species of raw materials, ZrOCl2 · 8H2O/CeCl3 · 7H2O and ZrOCl2 · 8H2O/CeO2/ HC1 were used to prepare CeO2/ZrO2 nanometer powders with the 12% mol content of ceria by co-precipitation method. The effects of different technologies (unwashed or washed by ethanol, common or microwave dryness etc. ) on the composite powder properties were studied. The particle shape and size of powders were observed and measured by using TEM, the phase of powders was analyzed by means of XRD. The results show that using the raw materials of ZrOCl2 · 8H2O and CeCl3 · 7H2O the well dispersive and homogeneous powders with the diameter of 21 nm were prepared by using the technologies of ethanol washing and microwave dryness.

关 键 词：氧化铈/氧化锆 复合纳米粉末 共沉淀法 醇洗 微波干燥 

分 类 号：TB383[一般工业技术—材料科学与工程]