Formation and evolution of quasi-aligned AlN nanowhiskers by combustion synthesis

Shi, Zhongqi; Radwan, Mohamed; Kirihara, Soshu; Miyamoto, Yoshinari; Jin, Zhihao

doi:10.1016/j.jallcom.2008.08.057

Cited by 20 publications

(14 citation statements)

References 25 publications

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“…Sun et al synthesized hollow AlN fibers through carbothermal reduction and nitridation of electrospun precursor fibers [23]. Shi et al reported a combustion route to obtain quasi-aligned AlN nanowhiskers at a low nitrogen gas pressure [24,25]. Using the high temperature direction nitridation method, Lei et al synthesized straight and stacked-sheet AlN nanowires with high purity [26].…”

Section: Introductionmentioning

confidence: 99%

Catalyst-free synthesis, morphology evolution and optical property of one-dimensional aluminum nitride nanostructure arrays

Wang

Song

et al. 2010

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Catalyst-free synthesis, morphology evolution and optical property of one-dimensional aluminum nitride nanostructure arrays

Wang

Song

et al. 2010

Journal of Alloys and Compounds

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“…After the combustion reactions, all of the as-fabricated AlN products were loose like dry cakes, which were dry milled for 30 minutes by a mortar and sieved through 150-mesh to obtain the dispersed powder products. A gas-releasing assisted quenching method [26,27] was employed to disclose the growth mechanism for the nearly spherical AlN particles. The difference between this method and the above CS experiments lies in that N2 was quickly released from the chamber when the combustion wave was passing through the sample.…”

Section: Sample Preparationmentioning

confidence: 99%

Synthesis of nearly spherical AlN particles by an in-situ nitriding combustion route

Wei

et al. 2020

Preprint

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Spherical AlN powders with micrometer size have attracted great attention owing to their good fluidity and dispersity. However, the industrial preparation methods usually require high temperature and long soaking time, which lead to the high cost and limit the wide application of the products. Herein, nearly spherical AlN particles with the average size of 2.5 μm were successfully synthesized via an in-situ combustion synthesis method. The effect of N 2 pressure, NH 4 Cl content and Al particle size on the combustion reaction procedure, phase composition and microstructure of the products was systematically investigated. The results showed that the decreased N 2 pressure, increased NH 4 Cl content and Al particle size led to the decreasing of combustion temperature and speed, which further affected the morphology of the products. As a result, low N 2 pressure (0.2 MPa), a small amount of NH 4 Cl (0.5 wt%) and fine Al particles (~2.5 μm) contributed to a moderate combustion temperature and facilitated the formation of nearly spherical AlN particles. In addition, based on the gas-releasing assisted quenching experiments and thermo-kinetic analysis, a two-step growth mechanism for the nearly spherical AlN particles was rationally proposed. The present method shows the advantages of low cost and high efficiency for preparing nearly spherical AlN particles, which can be used as raw materials for electronic substrates and fillers for packaging materials.

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“…After the combustion reactions, all of the as-fabricated AlN products were loose like dry cakes, which were dry milled for 30 minutes by a mortar and sieved through 150-mesh to obtain the dispersed powder products. A gas-releasing assisted quenching method [26,27] was employed to disclose the growth mechanism for the nearly spherical AlN particles. The difference between this method and the above CS experiments lies in that N 2 was quickly released from the chamber when the combustion wave was passing through the sample.…”

Section: Sample Preparationmentioning

confidence: 99%

Synthesis of nearly spherical AlN particles by an in-situ nitriding combustion route

Wei

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Spherical AlN powders with micrometer size have attracted great attention owing to their good fluidity and dispersity. However, the industrial preparation methods usually require high temperature and long soaking time, which lead to the high cost and limit the wide application of the products. Herein, nearly spherical AlN particles with the average size of 2.5 µm were successfully synthesized via an in-situ combustion synthesis method. The effect of N2 pressure, NH4Cl content and Al particle size on the combustion reaction procedure, phase composition and microstructure of the products was systematically investigated. The results showed that the decreased N2 pressure, increased NH4Cl content and Al particle size led to the decreasing of combustion temperature and speed, which further affected the morphology of the products. As a result, low N2 pressure (0.2 MPa), a small amount of NH4Cl (0.5 wt%) and fine Al particles (~ 2.5 µm) contributed to a moderate combustion temperature and facilitated the formation of nearly spherical AlN particles. In addition, based on the gas-releasing assisted quenching experiments and thermo-kinetic analysis, a two-step growth mechanism for the nearly spherical AlN particles was rationally proposed. The present method shows the advantages of low cost and high efficiency for preparing nearly spherical AlN particles, which can be used as raw materials for electronic substrates and fillers for packaging materials.

show abstract

Formation and evolution of quasi-aligned AlN nanowhiskers by combustion synthesis

Cited by 20 publications

References 25 publications

Catalyst-free synthesis, morphology evolution and optical property of one-dimensional aluminum nitride nanostructure arrays

Catalyst-free synthesis, morphology evolution and optical property of one-dimensional aluminum nitride nanostructure arrays

Synthesis of nearly spherical AlN particles by an in-situ nitriding combustion route

Synthesis of nearly spherical AlN particles by an in-situ nitriding combustion route

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