Low temperature synthesis of nanocrystalline α-Al2O3 by a tartaric acid gel method

被引：17
作者：
Gocmez, H. [1 ]
Ozcan, O. [1 ]
机构：
[1] Dumlupinar Univ, Fac Engn, Dept Ceram Engn, TR-43100 Kutahya, Turkey
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 475卷 / 1-2期
关键词：
alpha-Al2O3; nanocrystals; sol-gel; tartaric acid;
D O I：
10.1016/j.msea.2006.12.147
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nanocrystalline alumina was synthesized by a simple sol-gel method using aluminum nitrate in tartaric, oxalic and acetic acids mixed aqueous solutions. The alumina gel was successfully transferred to alpha-Al2O3 with this process after subsequent low temperature heat treatment. The prepared gel and powders were characterized by X-ray diffractometry (XRD), thermogravimetry-differential thermal analysis, scanning electron microscopy and transmission electron microscopy. The XRD analysis showed that the complete transformation from gamma-Al2O3 nanocrystalline to alpha-Al2O3 (37 nm) prepared in tartaric acid was observed at 925 degrees C. (C) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：20 / 22
页数：3
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