无团聚ZrO2-HfO2-Y2O3复合纳米粉体的制备

功能材料, 2006, 37(7): 1130-1133.

无团聚ZrO2-HfO2-Y2O3复合纳米粉体的制备

石刚 ^1, , 甄强 ^2, , 李榕 ^3, , 陈瑞芳 ^4, , 严凯 ^5, , ^6,

1.上海大学,材料科学与工程学院,上海,200072

2.上海大学,材料科学与工程学院,上海,200072;上海大学,纳米科学与技术研究中心,上海,200444

3.上海大学,材料科学与工程学院,上海,200072

4.上海大学,材料科学与工程学院,上海,200072

5.上海大学,材料科学与工程学院,上海,200072

6.法国里尔科技大学,国家高等化学学院晶体化学及固体物理化学实验室,UPRESA-CNRS 8012 ENSCL- USTL,BP 108,59652 Villeneuve d'Ascq Cedex,法国

基金项目: 上海市纳米科技专项基金(0452nm073) 国家自然科学基金(20101006)

关键词：氧化锆 , 氧化铪 , 纳米粉末 , 共沉淀法 , 分散性

Preparation of agglomeration-free nanosized ZrO2-HfO2-Y2O3 composite powders

以分析纯ZrOCl2·8H2O、HfOCl2·8H2O和Y(NO3)3·6H2O为原料,采用反向滴定共沉淀-共沸蒸馏法成功地制备出无团聚的ZrO2-HfO2-Y2O3复合纳米粉体.借助XRD、TEM、BET等手段分析了制备工艺对粉体粒径和团聚状态的影响.研究表明,分散剂PEG的加入量及前驱体湿凝胶的处理方式对最终制备的ZrO2-HfO2-Y2O3复合粉体的晶粒度影响不大,但显著影响粉体的分散状态.分散剂加入量为1%(质量分数)并对湿凝胶共沸蒸馏处理条件下最终获得的粉体的分散性最好.前驱体沉淀经500℃焙烧1h后,生成了具有高氧离子电导率的立方晶型ZrO2基ZrO2-HfO2-Y2O3固溶体,粉体的平均粒径约为15nm.

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