Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10630030 | Journal of the European Ceramic Society | 2005 | 5 Pages |
Abstract
An experimental study on the aluminum oxynitride and aluminum nitride formation by combustion of mixtures of micron-sized aluminum powder (average particle diameter as â¼9.0 μm) and alumina nanopowder (as â¼0.05 μm) of the fixed mass (â¼10 g) and different mass ratios (Al/γ-Al2O3 = 0.1-19.0) in air is reported. The formation of aluminum oxynitride (Al3O3N) and aluminum nitride during the combustion of powdery aluminum-based mixtures in air is discussed in this study. The combustion synthesis of Al3O3N and AlN was carried out in self-sustaining way. XPS-FESEM, XRD and chemical analysis were executed on final products of synthesis. The combustion process was also recorded by a video-camera. It was found that powdery mixtures, ignited by local heating, burned in one- or two-stage self-propagating regime. The combustion regime is different for different initial mass ratios Al/γ-Al2O3 and mainly depends on the content of fuel (aluminum powder) in mixture.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Alexander Gromov, Alexander Ilyin, Alexander Ditts, Vladimir Vereshchagin,