MICROWAVE-HYDROTHERMAL SYNTHESIS OF CERAMIC POWDERS
MICROWAVE-HYDROTHERMAL SYNTHESIS OF CERAMIC POWDERS
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DOI：
10.1016/0025-5408(92)90004-j
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发表时间：
1992-12-01
影响因子：
5.4
通讯作者：
LI, QH
中科院分区：
文献类型：
--
作者：
KOMARNENI, S;ROY, R;LI, QH
本文首次报道了利用微波-水热法催化合成晶态一元氧化物如二氧化钛、氧化锆和三氧化二铁以及二元氧化物如KNbO_3和BaTiO_3。虽然微波和水热技术的结合在过去几年中已被用于快速溶解各种粉末(如铝硅酸盐岩石)以进行化学分析，但我们在此报告了该技术在合成微粉中的应用。还合成了可与乙二醇插层的新型层状氧化铝相。在微波-水热条件下，利用2.45 GHz频率的微波，研究了化学物种浓度、时间和温度等不同参数对上述相结晶动力学的影响。
We report herein for the first time, the use of microwave-hydrothermal processing in catalyzing the synthesis of crystalline unary oxides such as TiO2, ZrO2 and Fe2O3 and binary oxides, such as KNbO3 and BaTiO3. While the combination of microwave and hydrothermal techniques has been used in the last few years to dissolve all kinds of powders (e.g. aluminosilicate rocks) rapidly for chemical analysis, we report here the use of this technique for synthesizing fine powders. A new layered alumina phase, which can be intercalated with ethylene glycol has also been synthesized. The effect of different parameters such as concentration of chemical species, time and temperature on the crystallization kinetics of the above phases has been investigated under microwave-hydrothermal conditions using microwaves of 2.45GHz frequency.