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

页码：4070 / 4072

页数：3

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