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Y_2O_3超微粉及其透明陶瓷的制备 被引量:13

Synthesis of Unltrafine Yittria Powder and Fabrication of Transparent Yttria Ceramics
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摘要 研究了化学沉淀法制备氧化钇超微粉的工艺及透明氧化钇陶瓷的制备工艺·以Y(NO3)3和NH3·H2O为原料,采用沉淀法制备出化学组成为Y2(OH)5(NO3)·nH2O的先驱沉淀物·发现在Y(NO3)3溶液中添加少量(NH4)2SO4,可以使先驱沉淀物由规则颗粒变为雪花状,并能减轻煅烧得到的氧化钇粉体的团聚·先驱沉淀物在1100℃下煅烧4h,得到了平均粒径为50nm的氧化钇粉体·该粉体经单向压制成型后,在1700℃真空烧结4h得到了透明Y2O3陶瓷· ?Synthesis of nanocrystalline yittria powder by precipitation method and fabrication of transparent yittria ceramics have been investigated. Precursor precipitate of Y2(OH)5(NO3)·nH2O was synthesized from Y(NO3)3 and NH3·H2O. It was found that the addition of small amount of (NH4)2SO4 into the Y(NO3)3 solution can transform the shape of the precursor precipitates from particulate to snowflake so that to reduce the degree of agglomeration. Nanocrystalline yttria powder (50?nm in diameter) was obtained by calcining the precursor at 1?100?℃ for 4 hours. The yttria powder was sintered into a transparent body by vacuum sintering at 1?700?℃ for 4 hours without any additives. 
出处 《东北大学学报(自然科学版)》 EI CAS CSCD 北大核心 2002年第12期1151-1154,共4页 Journal of Northeastern University(Natural Science)
基金 国家自然科学基金资助项目(50172010)
关键词 Y2O3 氧化钇 超细粉 透明陶瓷 沉淀法 硫酸根离子 低温制备 工艺 yttria ultrafinepowders transparent ceramics precipitation method sulfate ions low-temperature synthesis
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  • 1[1]Greskovich C, Chernoch J P. Improved polycrystalline ceramic lasers[J]. J Appl Phys, 1974,45(10):4495-4502.
  • 2[2]Greskovich C, Chernoch J P. Polycrystalline ceramic lasers[J]. J Appl Phys, 1973,44(10):4599-4606.
  • 3[3]Ikesue A, Kamata K, Yoshida K. Synthesis of transparent N d-doped HfO2-Y2O3 ceramics using HIP[J]. J Am Ceram Soc, 1996,79(2):359-364.
  • 4[4]Greskovich C, Woods K N. Fabrication of Transparent ThO 2-Doped Y2O3[J]. J Am Ceram Soc, 1973,52(5):473-78.
  • 5[5]Tsukuda Y, Muta A. Sintering of Y2O3 at high temperatures[J]. J Ceram Soc Jpn, 1976,84(12):585-89.
  • 6[6]Rhodes W H. Controlled transient solid second-phase sintering of yttria[J]. J Am Ceram Soc, 1981,64(1):13-19.
  • 7[7]Lefever R A, Matsho J. Transparent yttrium oxide ceramics[J]. Mater Res Bull, 1967,2(9):865-869.
  • 8[8]Dutta S K, Gazza G E. Transparent Y2O3 by hot-pressing[J]. Mater Res Bull, 1969,4(11):791-96.
  • 9[9]Ikegami T, Mori T, Yajima Y. Fabrication of transparent ceramics through the synthesis of yttrium hydroxide at low temperature and doping by sulfate ions[J]. J Ceram Soc Japan,1999,107(3):297-299.
  • 10[10]Zhang J G,Ma L,Xu Y. The preparation and characterization of ultrafine lanthanum oxide by asol-gel process[J]. Journal of Fudan University(Natural Science), 1999,38(1):24-28.

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