均匀沉淀法制备α-Fe_2O_3超细粉体的研究  

Preparation of Ultrafine α-Fe_2O_3 Powder by Homogeneous Precipitation Method

作　　者：刘树信[1] 王海滨[1] 霍冀川[2] 吕淑珍[2] 杨定明[2] 

机构地区：[1]绵阳师范学院化学与化学工程系,绵阳621000 [2]西南科技大学材料学院,绵阳621010

出　　处：《人工晶体学报》2009年第1期281-284,共4页Journal of Synthetic Crystals

基　　金：四川省教育厅资助科研项目(No.2006A139);四川省科技厅资助科研项目(No.2006J13-034);绵阳师范学院资助科研项目(No.MA2006004)

摘　　要：以尿素为均匀沉淀剂、氯化铁为原料,采用均匀沉淀法合成了α-Fe2O3超细粉体。通过TGA/SDTA分析确定前驱体的煅烧温度,用X射线粉末衍射和电子显微技术对粉体的晶体结构、形貌及粒度大小进行表征和分析。结果表明,所合成的Fe2O3为α型,粒径在0.2μm左右,粒度均匀,分散性好。同时,初步探讨了均匀沉淀法合成α-Fe2O3的形成机理。Ultrafine α-Fe2O3 powder were synthesized by homogenous precipitation method with the CO(NH2)2 as uniformity precipitation reagent and the FeCl3 as iron source.The calcinations temperature of the precursor was determined by TGA/SDTA.The crystal structure,shape and size of the ultrafine α-Fe2O3 were investigated by means of X-ray powder diffraction and electron microscope.The results show that the product was α-Fe2O3,the average size of the powder was about 0.2 μm and the powder was well dispersed.The princi...

关 键 词：超细α-Fe2O3 均匀沉淀法 制备 

分 类 号：TB381[一般工业技术—材料科学与工程]