摘要
采用超临界CO2微乳液法制备了纳米ZrO2颗粒,利用XRD、TEM、BET、TG-DSC、激光粒度分析等方法对所得的样品进行表征。结果表明:经超临界CO2微乳液过程可制得非晶相ZrO2前躯体,前躯体经550℃煅烧后转变为四方相ZrO2,900℃煅烧后转变为单斜相ZrO2,ZrO2颗粒分布均匀,粒径为40 nm左右。
ZrO2 nano-particles were prepared by supercritieal CO2 microemulsion. The samples obtained were characterized by using XRD, TEM, BET, and laser particle size analyzer. The results showed that： amorphous zirconia former body can be obtained by the supercritical CO2 mieroemulsion process , zirconia former body turned to a single tetragonal zirconia when calcined at 550 ℃ ,and the samples turned into a single phase of monoclinic zirconia at 900 ℃. Particle size of 40 nm could be prepared, and the particles were well-distributed.
出处
《现代机械》
2009年第5期93-95,共3页
Modern Machinery
