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无机材料学报

无机材料学报 ›› 2011, Vol. 26 ›› Issue (9): 929-932.DOI: 10.3724/SP.J.1077.2011.00929 CSTR: 32189.14.SP.J.1077.2011.00929

• 研究论文 • 上一篇    下一篇

燃烧法合成铪酸钇粉体及其透明陶瓷的制备

邹小庆, 周国红, 易海兰, 杨 燕, 王士维   

  1. (中国科学院 上海硅酸盐研究所, 上海200050)
  • 收稿日期:2010-11-01 修回日期:2010-12-21 出版日期:2011-09-20 网络出版日期:2011-08-19
  • 作者简介:邹小庆(1987-), 男, 硕士研究生. E-mail: zjuzxq@gmail.com

Fabrication of Transparent Y2Hf2O7 Ceramic from Combustion Synthesized Powders

ZOU Xiao-Qing, ZHOU Guo-Hong, YI Hai-Lan, YANG Yan, WANG Shi-Wei   

  1. (Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China)
  • Received:2010-11-01 Revised:2010-12-21 Published:2011-09-20 Online:2011-08-19

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1608

被引次数

2

摘要： 以硝酸钇(Y(NO3)3)和氯化铪(HfCl4)为原料, 乙二胺四乙酸(EDTA)作为燃剂, 采用燃烧法制备了粒径为50nm左右的纯相铪酸钇粉体. 粉体经1200℃煅烧后高能球磨15h, 然后在200MPa条件下进行冷等静压成型, 素坯尺寸为20mm×2.5mm, 最后采用真空烧结(1850℃保温6h), 制备出可见光波段直线透过率为50%的铪酸钇透明陶瓷. 研究了真空烧结温度对样品透过率和显微结构的影响, 当烧结温度高于1850℃时, 温度对于透过率影响不是很明显; 随着烧结温度的升高, 样品的晶粒尺寸增大. 

关键词: 燃烧合成法, Y2Hf2O7, 透明陶瓷, 真空烧结

Abstract: Y(NO3)3, HfCl4 and EDTA as raw materials,Y2Hf2O7 nanopowder were successfully prepared by combustion synthesis method. The as-burnt powder were calcined at 1200℃ and then ball-milled for 15h. The powders were formed into green bodies with a size of 20mm×2.5mm by cold isostatic pressing (CIP, 200MPa). Y2Hf2O7 transparent ceramics were obtained by sintering the green bodies at 1850℃ in vacuum for 6h. The resultant ceramics showed a transmittance of 50% in the visible spectral region. The sintering behavior of the prepared Y2Hf2O7 powders was investigated. When the sintering temperature was above 1850℃, sintering temperature had little effect on the transmittance of the ceramic. Meanwhile the grain size became larger with sintering temperature increasing.

Key words: combustion synthesis, Y2Hf2O7, transparent ceramic, vacuum sintering

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