用微波均相沉淀法合成Sc_2O_3纳米粉  

Synthesis of Nanocrystalline Sc_2O_3 Powder Using a Microwave Homogenous Precipitation Approach

作　　者：吕滨[1,2] 孙旭东[3] 孙挺[1] 王毅[1] 

机构地区：[1]东北大学理学院,沈阳110819 [2]锦州钛业有限公司,锦州121005 [3]东北大学材料与冶金学院,沈阳110819

出　　处：《材料研究学报》2011年第3期255-258,共4页Chinese Journal of Materials Research

基　　金：国家自然科学基金50672014;国家高技术研究发展计划2007AA06Z116资助项目~~

摘　　要：以硫酸钪为母盐,尿素为沉淀剂,采用微波加热方式合成了水合碱式碳硫酸钪前驱体。用差式扫描量热法(DSC)、热重分析(TG)、红外光谱(IR)、X-射线衍射(XRD)分析了加热过程中前驱沉淀物的物相变化。采用高温煅烧和高能微波辐照两种方法制备了Sc_2O_3粉体。结果表明,将前驱沉淀物分别在1000℃煅烧3 h和在900℃微波辐照20 min,均制备出高纯、超细、粒度分布窄、分散性好、近似球形的Sc_2O_3纳米粉。The hydrated basic carbonate-sulfate precursor was synthesized using scandium sulfate as mother liquor and urea as a precipitating agent by a microwave heating approach.The phase transformation processes of the precipitate precursor were analyzed by DSC/TG,FTIR and XRD.Two synthesis methods of Sc_2O_3 powder were compared.The results showed that highly pure,ultrafine,well dispersed,narrow particle size distribution and spherical Sc_2O_3 nanopowders can be obtained by calcination at 1000℃for 3 h in resistance furnace or irradiation at 900℃for 20 min in microwave furnace.

关 键 词：无机非金属材料 Sc_2O_3 微波均相沉淀法 均相沉淀法 

分 类 号：TB321[一般工业技术—材料科学与工程]