Synthesis of Dispersed Y2O3 Nanopowder from Yttrium Stearate
Fine yttrium stearate powder was produced at a relatively low temperature using yttrium nitrate hexahydrate,ammonia and stearic acid as the raw materials.Dispersed Y2O3 nanopowder was synthesized by calcining the yttrium stearate.The formation mechanism of the precursor and the Y2O3 nanopowder was studied by means ofXRD,TG-DTA,FT-IR,BET,FE-SEM and HR-TEM.Pure and dispersed Y2O3 nanopowder with an average particle size of 30 nm was produced by calcining the precursor at 600 ℃.The particle size increases to about 60 nm with the increase of the calcination temperature to 1000 ℃.In the preparation of Y2O3 from yttrium stearate,no water medium is involved,thus capillarity force and bridging of adjacent particles by hydrogen bonds can be avoided,resulting in good dispersion of the particles.The dispersed Y2O3 nanopowder prepared in this work has potential application in phosphors and transparent ceramic materials.
yttrium stearate stearic acid Y2O3 loose powder
Jinsheng Li Xudong Sun Shaohong Liu Di Huo Xiaodong Li Ji-Guang Li Qi Zhu Mu Zhang
Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeastern Universit School of Materials and Metallurgy,Northeastern University,Shenyang,Liaoning 110819,China Advanced Materials Processing Unit,National Institute for Materials Science,Sengen 1-2-1,Tsukuba,Iba
国际会议
景德镇
英文
3-7
2012-10-15（万方平台首次上网日期，不代表论文的发表时间）