Synthesis of α-alumina hexagonal platelets using a mixture of boehmite and potassium sulfate

被引：4
|
作者：
Hsiang, Hsing-I [1 ]
Chen, Tsung-Hao [1 ]
Chuang, Chia-Che [1 ]
机构：
[1] Natl Cheng Kung Univ, Particulate Mat Res Ctr, Dept Resources Engn, Tainan 70101, Taiwan
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 12期
关键词：
D O I：
暂无
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：
Single-crystal alpha-alumina (Al2O3) hexagonal platelets with a diameter of about 200 nm and 25 nm in thickness were synthesized by heating a mixture of boehmite and potassium sulfate at 1000 degrees C for 2 h and washing with water. The potassium sulfate addition effects on the Al2O3 phase and morphology were investigated using differential thermal analysis (DTA), X-ray diffraction (XRD), and transmission electron microscopy (TEM). It was found that potassium sulfate addition helps in the formation of single-crystal alpha-Al2O3 hexagonal platelets and promotes phase transformation from intermediate gamma-Al2O3 to alpha-Al2O3.
引用
收藏
页码：4070 / 4072
页数：3
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