Two-step Synthesis of Platelike Potassium Sodium Niobate Template Particles by Hydrothermal Method

被引：24
|
作者：
Bai, Shan [1 ]
Karaki, Tomoaki [1 ]
机构：
[1] Toyama Prefectural Univ, Dept Intelligent Syst Design Engn, Fac Engn, Imizu, Toyama 9390398, Japan
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2013年 / 96卷 / 08期
关键词：
KNBO3;
D O I：
10.1111/jace.12345
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：
Two-step hydrothermal synthesis of platelike potassium sodium niobate (K, Na)NbO3 (KNN) template particles was investigated. Platelike K4Na4Nb6O19 center dot 9H(2)O (KNN-hydrate) particles were synthesized in 4 mol/L aqueous alkali at 150 degrees C by the sodium dodecyl benzene sulfonate (SDBS) surfactant-assisted hydrothermal method, which were used as crystal nucleus in the second step of hydrothermal synthesis. The two-step synthesized KNN-hydrate particles with 0.6 mu m thickness and 7 mu m width were prepared at 80 degrees C after 10 h of the second step. After calcination of the KNN-hydrate particle at 600 degrees C, platelike KNN particles were obtained, which were used as templates for textured ceramics. Particles obtained by the two-step synthesis showed regular morphology and uniform distribution, with a marked improvement in grain size.
引用
收藏
页码：2515 / 2518
页数：4
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