不同沉淀剂对Ce_(0．5)Zr_(0．15)Y_(0．075)La_(0．075)Al_(0．2)O_2性能的影响  

Influence of Different Precipitators on the Properties Ce_(0.5)Zr_(0.15)Y_(0.075)La_(0.075)Al_(0.2)O_2

作　　者：李红梅[1] 魏振玲[1] 吕臻[1] 陈耀强[1] 龚茂初[1] 

机构地区：[1]四川大学,四川成都610064

出　　处：《稀有金属材料与工程》2007年第A03期234-237,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(20273043);国家重点基金(20333030)

摘　　要：采用不同的沉淀剂,用共沉淀法制备了Ce_(0.5)Zr_(0.15)Y_(0.075)La_(0.075)Al_(0.2)O_2复合材料,并通过氧脉冲吸附、BET、XRD、SEM及TPR对所制备的材料进行了表征,同时考察了焙烧温度对该材料结构性能的影响。结果表明,以碳酸铵-氨水为混合沉淀剂时,该材料表现出良好的储氧性能、织构性能、结构性能和抗老化性能;在不同的焙烧温度下均属同晶转化,样品保持稳定的萤石立方晶相固溶体结构。Ce0.5Zr0.15Y0.075La0.075Al0.2O2 composites with different precipitators were prepared by co-precipitation method, and characterized by means of oxygen pulse adsorption, surface area measurement （BET）, X-ray powder diffraction （XRD） and TPR. The results suggest that the sample has better structure capacity and thermal stability when it was prepared by salvolatile-ammonia. The sample belongs to the same crystalline phase change and keeps stabilized fluorite cubic structure.

关 键 词：储氧性能 织构性能 结构性能 

分 类 号：TB34[一般工业技术—材料科学与工程]