Optical and thermo-mechanical properties of fine-grained transparent yttria ceramics fabricated by hot-press sintering for infrared window applications
Optical and thermo-mechanical properties of fine-grained transparent yttria ceramics fabricated by hot-press sintering for infrared window applications
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DOI：
10.1016/j.jeurceramsoc.2018.04.056
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发表时间：
2018-09-01
影响因子：
5.7
通讯作者：
Kim, Hai-Doo
中科院分区：
文献类型：
--
作者：
Gan, Lin;Park, Young-Jo;Kim, Hai-Doo
本工作采用热压法制备了尺寸为Φ = 55 mm的高透明氧化钇陶瓷，其掺杂量为1at.% ZrO 2或12 at.% La 2 O3作为烧结添加剂。对于4 mm厚的样品，掺ZrO 2的样品在400 nm和1100 nm处的透射率分别达到71.1%和80.9%，且掺La 2 O3的样品的透射率与掺ZrO 2的样品相当。通过1600摄氏度的相对低的烧结温度，本发明的样品表现出非常精细的微观结构（
In this work, highly transparent yttria ceramics Phi=55mm in size were fabricated by a hot-pressing method with 1 at.% ZrO2 or 12 at.% La2O3 as a sintering additive. For a 4-mm-thick specimen doped with ZrO2, the in-line transmittance reaches 71.1% at 400nm and 80.9% at 1100 nm, and the transmittance of the La2O3-doped specimen is comparable to that of the ZrO2-doped specimen. By means of the relatively low sintering temperature of 1600 degrees C, the present samples exhibited very fine microstructures (