Hydrothermal synthesis of submicron NaNbO3 powders

被引：27
|
作者：
Song, Huawei [1 ]
Ma, Wenhui [1 ]
机构：
[1] Shantou Univ, Dept Phys, Shantou 515063, Guangdong, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2011年 / 37卷 / 03期
关键词：
Sodium niobate; Submicron powder; Hydrothermal; Ferroelectric phase; Morphology control; Structural characterization; LEAD-FREE; KNBO3;
D O I：
10.1016/j.ceramint.2010.11.011
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：
Nano-crystals of ferroelectric NaNbO3 phase were prepared by hydrothermal method in one step. The influence of temperature, concentration of Nb2O5 and NaOH, and reaction duration on structure and morphology was analyzed. Temperature has a marked effect on phase formation, while concentration of Nb2O5 and NaOH can affect both structure and morphology. Lower ratio of NaOH/Nb2O5 facilitates formation of orthorhombic NaNbO3. Reaction duration only plays an important role in the formation process at lower temperatures. The intermediate phases of sodium niobates may transform into NaNbO3 by prolonging reaction duration or annealing at certain temperature. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：877 / 882
页数：6
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