Synthesis of aluminum nitride powder from δ-alumina nanopowders under a mixed gas flow of nitrogen and hydrogen

被引：23

作者：

Jung, Woo-Sik ^{[1
]}

机构：

[1] Yeungnam Univ, Sch Chem Engn, Coll Engn, Gyongsan 712749, South Korea

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷 / 01期

关键词：

Al2O3; Aluminum nitride; Hydrogen cyanide; TRANSFORMATION; NANOPARTICLES; REDUCTION; MECHANISM; ALN;

D O I：

10.1016/j.ceramint.2011.07.002

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：

Aluminum nitride (AlN) was synthesized by calcining 8-alumina (8-Al2O3) nanopowders under a mixed gas flow of nitrogen and hydrogen that was passed over a crucible containing activated charcoal. The conversion process of 8-Al2O3 to AlN was monitored by powder X-ray diffraction patterns and Al-27 magic-angle spinning nuclear magnetic resonance spectroscopy. 8-Al2O3 began to be converted to AlN at 1200 degrees C and the conversion was completed after 5 h at 1600 degrees C. The hydrogen cyanide (HCN) gas that evolved during the calcination reacted with alumina to form white AlN. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：871 / 874

页数：4

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