撞击流反应制备钇稳定氧化锆超细粉体  

Preparation of Yttria Stabilized Zirconia Ultra-fine Powder in Submerged Circulative Impinging Stream Reactor

作　　者：阳慧芳[1] 徐志高[1] 池汝安[1] 李攀红[1] 赵骏[1] 祝都明 

机构地区：[1]武汉工程大学绿色化工过程教育部重点实验室,武汉430073

出　　处：《有色金属（冶炼部分）》2014年第7期49-52,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金："十二五"国家科技支撑计划项目(2012BAB10B10);教育部"新世纪优秀人才支持计划"项目(NCET-13-0941);教育部"长江学者和创新团队发展计划"项目(IRT0974)

摘　　要：以氧氯化锆和硝酸钇及碳酸氢铵为原料,PEG4000为分散剂,在撞击流反应器中制备钇稳定氧化锆前驱体,焙烧后得到钇稳定氧化锆(YSZ)粉体,考察PEG4000用量、搅拌速率、反应时间和焙烧时间对粉体粒径的影响,并对粉体进行表征。结果表明,优化工艺条件为:PEG4000用量1.4g/L,转速1 000r/min,反应时间65min,前驱粉体在1 460℃焙烧120min,可制得球形、粒度分布均匀、表观直径小于0.5μm的YSZ超细粉体。Yttria stabilized zirconia ultra-fine powder （YSZ） was produced by roasting zirconia precursor prepared in submerged circulation impinging stream reactor with zirconium oxychloride, yttrium nitrate and ammonium bicarbonate as raw materials and PEG4000 as dispersant. The effects of PEG4000 dosage, stirring velocity, reaction time and roasting time on particle size of YSZ were investigated. The particle size of YSZ was characterized. The results show that the optimum reaction conditions include PEG4000 dosage of 1.4 g for one liter reaction solution, stirring velocity of 1 000 r/min, reaction time of 65 min, roasting temperature of 1 460 ℃ and roasting time of 120 min. YSZ powder prepared under the optimum conditions is of spherical particle with average particle size of 0.5 μm and good dispersity.

关 键 词：撞击流 钇稳定氧化锆 超细粉体 沉淀法 

分 类 号：TQ174.1[化学工程—陶瓷工业]