Transparent yttria produced by spark plasma sintering at moderate temperature and pressure profiles
Transparent yttria produced by spark plasma sintering at moderate temperature and pressure profiles
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DOI：
10.1016/j.jeurceramsoc.2011.11.023
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发表时间：
2012-05-01
影响因子：
5.7
通讯作者：
Goto, Takashi
中科院分区：
文献类型：
--
作者：
An, Liqiong;Ito, Akihiko;Goto, Takashi
采用放电等离子烧结法制备了氧化钇（Y2 O3）透明体，研究了烧结温度对Y2 O3透明体的致密度、显微结构、光学性能和力学性能的影响。在1473-1873 K烧结温度下获得了完全致密的Y_2O_3体。在1473-1573 K时，平均晶粒尺寸为0.24-0.32 μ m，随温度升高至1823 K，平均晶粒尺寸稳定增加至1.97 μ m。在1573 K烧结并在1323 K退火的Y2 O3体中获得最高的透射率，在2000 nm波长处显示81.7%（理论值的99%）。(C)2011爱思唯尔有限公司版权所有。
Transparent yttria (Y2O3) bodies were fabricated by spark plasma sintering, and the effects of the sintering temperature on relative density, microstructure, and the optical and mechanical properties of Y2O3 bodies were investigated. Fully dense Y2O3 bodies were obtained at sintering temperatures 1473-1873 K. The average grain size was 0.24-0.32 mu m at 1473-1573 K, and steadily increased to 1.97 mu m with an increase in temperature to 1823 K. The highest transmittance was obtained in the Y2O3 body sintered at 1573 K and annealed at 1323 K, showing 81.7% (99% of the theoretical value) at a wavelength of 2000 nm. (C) 2011 Elsevier Ltd. All rights reserved.