A comparative study of the properties of terbium aluminum garnet powder sintered in air, vacuum and by laser irradiation

被引：5
|
作者：
Shabir, Humyra [1 ]
Lal, Bansi [1 ]
Rafat, M. [2 ]
机构：
[1] Indian Inst Technol, Ctr Laser Technol, Kanpur 208016, Uttar Pradesh, India
[2] Jamia Millia Islamia, Fac Engn & Technol, Dept Appl Sci & Humanities, New Delhi 110025, India
来源：
CERAMICS INTERNATIONAL | 2010年 / 36卷 / 01期
关键词：
Sintering; Terbium aluminum garnet ceramics; Laser irradiation;
D O I：
10.1016/j.ceramint.2009.07.019
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structural and optical properties of terbium aluminum garnet (TAG) powder sintered (similar to 1100 degrees C) in air, vacuum (similar to 10(-6) mbar) and with 70 W of unfocussed CW CO2 laser radiation, have been studied using X-ray powder diffraction (XRD), scanning electron microscopy (SEM/TEM), FTIR, optical absorption and photoluminescence techniques. Structural properties of TAG are found to be independent of the sintering procedure except that the pure TAG crystalline phase (Tb3Al5O12) is evolved in about 2 h in the case of laser sintering compared to 8 h needed in air sintering (by furnace) and 4 h needed in the case of vacuum furnace sintering. On the other hand, the absorption/emission intensity (300-600 nm region) of TAG samples sintered in vacuum is higher compared to that of laser/furnace sintering in air. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：365 / 369
页数：5
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