Nanocrystalline BaTiO3 powder via a sol process ambient conditions

被引：27
作者：
Wang, Xinyu
Lee, Burtrand I. [1 ]
Hu, Michael
Payzant, E. Andrew
Blom, Douglas A.
机构：
[1] Clemson Univ, Sch Mat Sci & Engn, Clemson, SC 29634 USA
[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2006年 / 26卷 / 12期
基金：
美国国家科学基金会;
关键词：
sol-gel processes; powder-chemical preparation; BaTiO3; titanates;
D O I：
10.1016/j.jeurceramsoc.2005.04.002
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：
Nanocrystalline BaTiO3, particles have been prepared by ambient condition sol (ACS) process starting from soluble precursors of barium and titanium yielding a mixed oxide/hydroxide gel. The gel was peptized and crystallized in water under a refluxing condition. Higher initial pH and Ba/Ti ratio led to smaller crystallite sizes of BaTiO3 powders. Organic mineralizer, tetramethylammonium hydroxide (TMAH), can adsorb on the BaTiO3 nuclei and inhibited further growth of the particles. Adding a polymer during BaTiO3 synthesis led to a smaller particle size and increased redispersibility of the particles in water. (c) 2005 Elsevier Ltd. All rights reserved.
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收藏
页码：2319 / 2326
页数：8
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