Combustion synthesis of submicron AlN particles

Закоржевский, В. В.; Borovinskaya, I. P.

doi:10.1134/s0020168515060187

Cited by 17 publications

(6 citation statements)

References 6 publications

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“…In a thermal explosion (2200-2400°C), aluminum nitride is formed in the gas phase in the second stage of combustion and is stabilized due to the endothermic process, followed by crystallization into a solid phase (exothermic process) [1,[3][4][5][6][7]. The growth of crystals during combustion of aluminum nanopowder in air occurs toward the heat flow, which is consistent with the classical concepts of crystal growth [3].…”

Section: Methodssupporting

confidence: 65%

The Influence of Aluminium Nanopowder Density on the Structure and Properties of its Combustion Products in Air

Ilyin

Root

Mostovshchikov

2016

KEM

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The intermediate and final combustion products of pressed aluminum nanopowder are studied. It is found that the main combustion product is aluminum nitride. In the intermediate stages of combustion, aluminum oxide (γ-Al2O3) and oxynitride (Al5O6N) are the first to form on the sample surface, and aluminum nitride is formed next. The use of sliding (incident at a small angle to the surface) synchrotron radiation made it possible to determine with high accuracy (in time) the sequence of stages of formation of crystalline products during combustion of the aluminum nanopowder.

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Section: Methodssupporting

confidence: 65%

The Influence of Aluminium Nanopowder Density on the Structure and Properties of its Combustion Products in Air

Ilyin

Root

Mostovshchikov

2016

KEM

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“…[5][6][7][8][9][10] The main preparation method is carbothermal reduction method, which is limited by factors such as difficult uniform mixing of raw materials, high cost of high-temperature calcination and the need for high-purity alumina and carbon black. [11][12][13][14][15][16][17][18][19][20][21] Recently, a new type called low-temperature combination synthesis has been adopted, and the prepared AlN has a small and uniform particle size. [22][23][24][25][26] These experiments usually use Al(NO 3 ) 3 as the aluminum source, urea or citric acid as the fuel, and glucose as the carbon source to prepare AlN nanopowder through redox reaction.…”

Section: Introductionmentioning

confidence: 99%

“…Aluminum nitride (AlN) has high thermal conductivity, high resistance, low dielectric constant, low thermal expansion coefficient, good thermal shock resistance, and corrosion resistance, 1–4 making it a hot new type of electronic ceramic that is widely used in the fields of heat dissipation packaging materials for high‐power chips 5–10 . The main preparation method is carbothermal reduction method, which is limited by factors such as difficult uniform mixing of raw materials, high cost of high‐temperature calcination and the need for high‐purity alumina and carbon black 11–21 …”

Section: Introductionmentioning

confidence: 99%

Preparation of nano‐AlN powder by sol–gel foaming and its sintering properties

Wang

et al. 2023

Int J Applied Ceramic Tech

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Uniformly dispersed nano‐sized aluminum nitride powders were prepared by the sol–gel foaming method using aluminum nitrate as the aluminum source, sucrose as the carbon source, and ammonium chloride as the foaming agent. The effects of ammonium chloride content on the particle size and the sintering properties of aluminum nitride were investigated. The results showed that when the molar ratio of ammonium chloride to aluminum nitrate was .5, the colloidal foams were uniform, large, and fluffy, and amorphous alumina precursors with uniform particles could be prepared. Aluminum nitride powder with a particle size of 22–27 nm can be obtained by calcining these precursors in nitrogen atmosphere at 1400°C for 2 h. At the same time, aluminum nitride bulk material with a relative density of 95% can be obtained by sintering the compact samples in nitrogen atmosphere at 1700°C for 2 h.

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“…Nowadays, a number of methods are used for producing new materials, which are associated with the interaction of powerful energy fluxes with a matter or high-temperature combustion processes [1][2][3][4][5][6][7][8][9]. One of these processes is manufacturing aluminum nitride (AlN) by combustion of aluminum nanopowder in air [1][2][3][4][5][6][7]. AlN nanopowder is effectively used in solid propellants, thermites and explosives.…”

Section: Introductionmentioning

confidence: 99%

High-Speed Visualization of Nanopowder Combustion in Air

Gubarev¹,

Klenovskii²,

Li³

et al. 2018

Opt. Pura Apl.

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The paper discusses the methods of high-speed imaging of high-temperature processes in a real time mode: passive registration in the own light, usage of laser illumination, and using the laser monitor. The visualization results of combustion in air of Al nanopowder and thermite Al-Fe2O3 mixture are presented. The perspectives of application of laser monitors in NDE are considered, particularly for the study of laser ignition of thermite mixtures and solid fuels.

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Combustion synthesis of submicron AlN particles

Cited by 17 publications

References 6 publications

The Influence of Aluminium Nanopowder Density on the Structure and Properties of its Combustion Products in Air

The Influence of Aluminium Nanopowder Density on the Structure and Properties of its Combustion Products in Air

Preparation of nano‐AlN powder by sol–gel foaming and its sintering properties

High-Speed Visualization of Nanopowder Combustion in Air

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