Hydrothermal synthesis of potassium niobate powders

被引：30
作者：
Wang, Ying
Yi, Zhiguo
Li, Yongxiang [1 ]
Yang, Qunbao
Wang, Dong
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Postgrad Sch, Beijing 100390, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2007年 / 33卷 / 08期
基金：
中国国家自然科学基金;
关键词：
potassium niobate; hydrothermal synthesis; morphology; crystal growth;
D O I：
10.1016/j.ceramint.2006.07.013
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：
Potassium mobate (KNbO3) powders with the orthorhombic structure were successfully synthesized through the hydrothermal reaction of Nb2O5 and KOH at 200 degrees C. The concentration of KOH had a great effect on the morphology and particle size of KNbO3 powders. The morphology of KNbO3 powders changed from rod-like to cubic particles when the potassium hydroxide (KOH) concentrations was in the range of 6.25-15 M. Particularly, when the KOH concentration was 7.5 M and the amount of Nb2O5 was 0.02 mol, dodecahedral crystalline was found in the precipitations. (c) 2006 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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页码：1611 / 1615
页数：5
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