无机材料学报2024，Vol.39Issue(6)：691-696,6.DOI:10.15541/jim20230514
亚微米球形Y2O3粉体及其透明陶瓷的制备
Preparation of Sub-micron Spherical Y2O3 Particles and Transparent Ceramics
摘要
Abstract
Y2O3 ceramics is widely used as laser medium or optical window due to its excellent physical and chemical properties and high transparency in wide frequency band of 280 nm-8 pm.However,preparation of highly transparent Y2O3 ceramics still remains challenge due to its synthetic precursor and nano-powders difficult to meet the requirements.In this work,a spherical monodispersed and submicron-sized Y2O3 powder was prepared by a homogeneous precipitation method using yttrium nitrate and urea as raw materials.Structure,phase evolution and morphology of Y2O3 precursor and the calcined powder were studied by different methods.The synthesized particle precursor exhibits a sphere morphology with diamension around 330 nm,and Y2O3 powder calcined at 800 ℃ for 2 h shows spherical,well-dispersed and uniformed particles with dimension around 260 nm.Based on this spherical Y2O3 powder,transparent Y2O3 ceramics were fabricated by vacuum sintering at 1780 ℃ using 0.3％(in atom)Nb2O5 as sintering additive.The in-line transmittances of Y2O3 ceramics with thickness of 1 mm reach 76.9％at a wavelength of 1100 nm and 65.6％at a wavelength of 400 nm.In conclusion,this study provides a new promising method for preparing Y2O3 transparent ceramics with excellent properties.关键词
尿素均相沉淀法/亚微米球形Y2O3粉体/透明Y2O3陶瓷/Nb2O5/真空烧结Key words
urea homogeneous precipitation method/submicron-sized spherical Y2O3 powder/transparent Y2O3ceramic/Nb2O5/vacuum sintering分类
化学化工引用本文复制引用
刘焱,覃显鹏,甘霖,周国红,章天金,王士维,陈鹤拓..亚微米球形Y2O3粉体及其透明陶瓷的制备[J].无机材料学报,2024,39(6):691-696,6.基金项目
国家自然科学基金(52130207,51902093,52103357)National Natural Science Foundation of China(52130207,51902093,52103357) （52130207,51902093,52103357）
