Controllable phase low-temperature sintering of composite oxide ceramics with high melting point

被引：0
|
作者：
Long, Ying [1 ,2 ]
Du, Yongguo [2 ]
Kuang, Jiacai [1 ]
Liu, Hongbo [1 ]
Zheng, Xiaohui [2 ]
Qin, Jun [2 ]
机构：
[1] College of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410114, China
[2] College of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073, China
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2010年 / 38卷 / 05期
关键词：
Silicon - Glass ceramics - Alumina - Liquids - Barium compounds - Aluminum - Lanthanum compounds - Silica - Silicon oxides - Additives - Liquid phase sintering - Temperature - Thermal expansion;
D O I：
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中图分类号：
学科分类号：
摘要：
A technical way was proposed that the composite oxide ceramic could be obtained by liquid phase sintering at low temperatures, using BaO-Al2O3-SiO2 (BAS) glass (a precursor for glass-ceramic) as the sintering additive. The sintering parameters were adjusted by studying the viscous flow characteristics of BAS glass at high temperature and its crystallization characteristics during cooling process. Using BAS glass as sintering additive, Y2Si2O7, Y2SiO5, 3Al2O3·2SiO2 or La2Zr2O7 ceramics were prepared by liquid sintering. The results show that the composite oxide ceramics can be obtained at low temperatures, in which the main crystal phase is the designed composite oxide and the rest phase is BaAl2Si2O8 crystallized from the glass.
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页码：837 / 842
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