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无机材料学报

• 研究论文 • 上一篇    下一篇

(Y,Gd)2O3:Eu(YGO:Eu)纳米粉体合成及透明陶瓷制备

李晓东1, 修稚萌1, 白丽丽1, 高 铁2, Liu Yi-Nong3, Hu Xiao-Zhi3, 孙旭东1
   

  1. (1. 东北大学 材料各向异性与织构教育部重点实验室, 沈阳 110004; 2. 东北大学 材料电磁过程教育部重点实验室, 沈阳 110004; 3. School of Mechanical Engineering, the University of Western Australia, Crawley WA 6009, Australia)

  • 收稿日期:2006-11-17 修回日期:2006-12-21 出版日期:2007-11-20 网络出版日期:2007-11-20

Synthesis of (Y,Gd)2O3:Eu (YGO:Eu) Nano-Powder and Fabrication of Transparent Ceramics

LI Xiao-Dong1, XIU Zhi-Meng1, BAI Li-Li1, GAO Tie2, LIU Yi-Nong3, HU Xiao-Zhi3, SUN Xu-Dong1   

  1. (1. The Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China; 2. The Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China; 3. School of Mechanical Engineering, the University of Western Australia, Crawley WA 6009, Australia)

  • Received:2006-11-17 Revised:2006-12-21 Published:2007-11-20 Online:2007-11-20

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摘要： 研究以碳酸氢铵作为沉淀剂制备Y1.34Gd0.6Eu0.06O3(YGO:Eu)纳米粉体的工艺, 并采用真空烧结制备了YGO:Eu透明陶瓷. 实验结果表明: 以硝酸盐为母盐, 以碳酸氢铵为沉淀剂, 在本研究试验条件下获得的YGO先驱物为晶态的水合稀土碳酸钇钆正盐. 先驱物在600℃煅烧后可以得到立方晶型的YGO粉体. 煅烧温度对粉体的颗粒尺寸及尺寸分布有影响, 1100℃煅烧所获得的粉体由粒径～100nm的球形颗粒组成, 颗粒尺寸分布均匀, 粉体具有较好的烧结性能. 采用所制备的YGO:Eu纳米粉体, 在1670℃真空烧结2h可获得透光性良好的透明陶瓷, 样品在可见光区的最高透过率可达74.6%, 高于相同工艺条件下制备的氧化钇透明陶瓷.

关键词: 纳米粉体, 闪烁体, YGO, 氧化钇, 氧化钆, 透明陶瓷

Abstract:

The synthesis of nano-sized Y1.34Gd0.6Eu0.06O3 (YGO:Eu) powder by using an AHC (ammonium hydrogen carbonate) precipitation technique was investigated. The precursor powders obtained were of crystalline and indexed to yttrium gadolinium normal carbonate. On calcination, the precursor powders were converted to crystalline yttrium gadolinium oxide at 600℃. The powder calcined at 1100℃ show better sintering behavior, mainly due to their narrowest particle size distribution and finest average particle size. Transparent YGO ceramics were prepared by sintering at 1670℃ for 2h in vacuum using the powders calcined at 1100℃. The YGO ceramics shows a high in-line transmittance of 74.6% in the visible-light region, much higher than that of transparent Y2O3 ceramics prepared by the same process.


Key words: nano powder, scintillator, YGO, yttria, gadolinia, transparent ceramics

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