TiO_2粉末制备及煅烧工艺研究  

Precipitation and Calcine Technology Research of TiO_2 Materials

作　　者：姜锋[1] 申镭诺[1] 陈小波[1] 肖晴[1] 向周丹[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083

出　　处：《武汉理工大学学报》2011年第5期18-21,共4页Journal of Wuhan University of Technology

基　　金：长沙市科技重大专项(K080105-11)

摘　　要：以市售钛白粉为原料,NH4HCO3为沉淀剂,开发了一种适合大规模制备纳米TiO2粉体的液相沉淀法,研究了煅烧温度对纳米TiO2粉体的晶型、晶粒尺寸及形貌的影响。研究表明:随着煅烧温度升高,纳米TiO2粉体结晶度提高,粒径增大。温度高于700℃,部分锐钛矿型纳米TiO2转化为金红石型;550℃低温煅烧获得近球形锐钛矿相纳米TiO2粉体,粉末粒径分布均匀,平均粒径约为10 nm,微观组织性能良好。High quality TiO2 nano-materials were successively synthesized by liquid phase precipitation,using titanium pigment as raw material and NH4HCO3 as precipitator.The inference of calcination temperatures to phases,particle size and micro-structure were studied.Research indicated that higher calcination temperature was,larger the particle size was.When calcination temperature was higher than 700 ℃,part of anatase changed into rutile;spherical TiO2 nano-powders with excellent microstructure performance and particle size about 10 nm was adopted when calcination temperature was 550 ℃.

关 键 词：纳米TIO2 液相沉淀 煅烧温度 

分 类 号：TF122[冶金工程—粉末冶金]