Study of aluminum nitride formation by superfine aluminum powder combustion in air

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

An experimental study on the combustion of superfine aluminum powders (average particle diameter as∼0.1 μm) in air is reported. Formation of aluminum nitride during combustion of aluminum in air is focused in this study. Superfine aluminum powders were produced by wire electrical explosion (WEE) method. Such superfine aluminum powder is stable in air but, if ignited, it can burn in self-sustaining way. During the combustion, temperature was measured and actual burning process was recorded by a video camera. SEM, XRD, TG-DTA and chemical analysis were executed on initial powders and final products. It was found that powders, ignited by local heating, burned in two-stage self-propagating regime. The products of the first stage consisted of unreacted aluminum (∼70 mass%) and amorphous oxides with trace of AlN. After the second stage AlN content exceeded 50 mass% and residual Al content decreased to ∼10 mass%. A qualitative discussion is given on the probable mechanism of AlN formation in air.

Original languageEnglish
Pages (from-to)2879-2884
Number of pages6
JournalJournal of the European Ceramic Society
Volume24
Issue number9
DOIs
Publication statusPublished - Aug 2004

Fingerprint

Aluminum nitride
Aluminum
Powders
Air
Video cameras
Differential thermal analysis
Oxides
Explosions
aluminum nitride
Wire
Heating
Scanning electron microscopy
Chemical analysis
Temperature

Keywords

  • A1O
  • AlN
  • Nitrides
  • Powder-gas phase reaction
  • Superfine powders
  • Whiskers

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

@article{f15d21a310f547d2bc37838a7b8f6ad0,
title = "Study of aluminum nitride formation by superfine aluminum powder combustion in air",
abstract = "An experimental study on the combustion of superfine aluminum powders (average particle diameter as∼0.1 μm) in air is reported. Formation of aluminum nitride during combustion of aluminum in air is focused in this study. Superfine aluminum powders were produced by wire electrical explosion (WEE) method. Such superfine aluminum powder is stable in air but, if ignited, it can burn in self-sustaining way. During the combustion, temperature was measured and actual burning process was recorded by a video camera. SEM, XRD, TG-DTA and chemical analysis were executed on initial powders and final products. It was found that powders, ignited by local heating, burned in two-stage self-propagating regime. The products of the first stage consisted of unreacted aluminum (∼70 mass{\%}) and amorphous oxides with trace of AlN. After the second stage AlN content exceeded 50 mass{\%} and residual Al content decreased to ∼10 mass{\%}. A qualitative discussion is given on the probable mechanism of AlN formation in air.",
keywords = "A1O, AlN, Nitrides, Powder-gas phase reaction, Superfine powders, Whiskers",
author = "Alexander Gromov and Vladimir Vereshchagin",
year = "2004",
month = "8",
doi = "10.1016/j.jeurceramsoc.2003.09.020",
language = "English",
volume = "24",
pages = "2879--2884",
journal = "Journal of the European Ceramic Society",
issn = "0955-2219",
publisher = "Elsevier BV",
number = "9",

}

TY - JOUR

T1 - Study of aluminum nitride formation by superfine aluminum powder combustion in air

AU - Gromov, Alexander

AU - Vereshchagin, Vladimir

PY - 2004/8

Y1 - 2004/8

N2 - An experimental study on the combustion of superfine aluminum powders (average particle diameter as∼0.1 μm) in air is reported. Formation of aluminum nitride during combustion of aluminum in air is focused in this study. Superfine aluminum powders were produced by wire electrical explosion (WEE) method. Such superfine aluminum powder is stable in air but, if ignited, it can burn in self-sustaining way. During the combustion, temperature was measured and actual burning process was recorded by a video camera. SEM, XRD, TG-DTA and chemical analysis were executed on initial powders and final products. It was found that powders, ignited by local heating, burned in two-stage self-propagating regime. The products of the first stage consisted of unreacted aluminum (∼70 mass%) and amorphous oxides with trace of AlN. After the second stage AlN content exceeded 50 mass% and residual Al content decreased to ∼10 mass%. A qualitative discussion is given on the probable mechanism of AlN formation in air.

AB - An experimental study on the combustion of superfine aluminum powders (average particle diameter as∼0.1 μm) in air is reported. Formation of aluminum nitride during combustion of aluminum in air is focused in this study. Superfine aluminum powders were produced by wire electrical explosion (WEE) method. Such superfine aluminum powder is stable in air but, if ignited, it can burn in self-sustaining way. During the combustion, temperature was measured and actual burning process was recorded by a video camera. SEM, XRD, TG-DTA and chemical analysis were executed on initial powders and final products. It was found that powders, ignited by local heating, burned in two-stage self-propagating regime. The products of the first stage consisted of unreacted aluminum (∼70 mass%) and amorphous oxides with trace of AlN. After the second stage AlN content exceeded 50 mass% and residual Al content decreased to ∼10 mass%. A qualitative discussion is given on the probable mechanism of AlN formation in air.

KW - A1O

KW - AlN

KW - Nitrides

KW - Powder-gas phase reaction

KW - Superfine powders

KW - Whiskers

UR - http://www.scopus.com/inward/record.url?scp=1842480942&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1842480942&partnerID=8YFLogxK

U2 - 10.1016/j.jeurceramsoc.2003.09.020

DO - 10.1016/j.jeurceramsoc.2003.09.020

M3 - Article

VL - 24

SP - 2879

EP - 2884

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 9

ER -