Facile synthesis of monodisperse aluminum nitride microspheres

Wan, Jun; Qiao, Xvsheng; Wu, Liang; Wu, Yiming; Fan, Xianping

doi:10.1007/s10971-015-3818-x

Cited by 14 publications

(8 citation statements)

References 75 publications

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“…This indicates that the Al particles acted as a template for the growth of AlN hollow spheres. By combining the sol-gel technique and the gas-reduction-nitridation method, Wan et al [130] succeeded in producing monodisperse AlN microspheres. First, the authors dissolved AlCl 3 *6H 2 O in a solvent containing water, ethanol, and formaldehyde.…”

Section: D(0) Microspheresmentioning

confidence: 99%

Morphological diversity of AlN nano- and microstructures: synthesis, growth orientations and theoretical modelling

Nersisyan

Lee

Kim

et al. 2019

International Materials Reviews

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Recent developments have seen breakthroughs in zero-, one-, two-, and three-dimensional AlN micro-and nanostructures, such as nanoparticles, nanowires, nanotubes, thin films and 3D multifold symmetry crystals. The attractive electrical, optical, and thermal properties of AlN make these materials irreplaceable for microelectrochemical systems (MEMS), surface acoustic waves (SAWs) and light emitting diodes (LED). The significant interest in the field of AlN nanostructure synthesis and application encouraged us to summarise the reported data to better understand the physical and chemical aspects of AlN crystal growth processes. Four main topics are covered in this review article: (1) the morphological diversity of AlN nanoand microstructures; (2) formation mechanisms and growth dynamics; (3) theoretical simulation of growth processes based on density functional theory (DFT) and phase field (PF) modelling approaches; (4) application and devices. This article also provides a perspective on future research relevant to AlN micro-and nanostructures.

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Section: D(0) Microspheresmentioning

confidence: 99%

Morphological diversity of AlN nano- and microstructures: synthesis, growth orientations and theoretical modelling

Nersisyan

Lee

Kim

et al. 2019

International Materials Reviews

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“…In addition, the detailed mechanism of the carbothermal reduction reaction between different raw materials was not fully understood. It was still common to see the reports improving the types of raw materials [ 11 , 12 , 13 ], using the suitable additives [ 14 , 15 , 16 ] and preparing the near-spherical AlN powder [ 17 , 18 ] in recent years.…”

Section: Introductionmentioning

confidence: 99%

Carbothermal Reduction Synthesis of Aluminum Nitride from Al(OH)3/C/PVB Slurries Prepared by Three-Roll Mixing

et al. 2021

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Polyvinyl butyral (PVB) was used in the Al(OH)3/carbon black/ethanol slurries by the three-roll mixing to prepare AlN powder using the carbothermal reduction–nitridation (CRN) process in the experiments. The effects of PVB addition on the synthesis of AlN powder were studied by viscosity, tap density, XRD, SEM and TG measurements. The results showed that the PVB layer covering on the surface of Al(OH)3 particles reduced the viscosity of Al(OH)3/carbon/ethanol slurry and increased the dispersion homogeneity of Al(OH)3/carbon raw powder. The tap densities of the Al(OH)3/carbon mixtures after three-roll milling could be increased with the increase in PVB addition. In the CRN process, most of the PVB covering Al(OH)3 particles evaporated and supplied the passage for nitrogen removal to the particles. Based on the experimental data, the role of PVB on the mixing and CRN process was discussed.

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“…Recently, spherical AlN particles with micrometer size have shown significant promise for applications in raw materials for electronic substrates and fillers for packaging materials owing to their good fluidity and dispersity [7,8]. Hence, many efforts have been devoted to synthesis spherical AlN particles, including direct nitridation [9], carbothermal reductionnitridation [10] as well as other two-step chemical routes [11]. However, these methods usually require high temperature, long soaking time or expensive raw materials, which will increase the cost and limit the industrial applications.…”

Section: Introductionmentioning

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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Facile synthesis of monodisperse aluminum nitride microspheres

Cited by 14 publications

References 75 publications

Morphological diversity of AlN nano- and microstructures: synthesis, growth orientations and theoretical modelling

Morphological diversity of AlN nano- and microstructures: synthesis, growth orientations and theoretical modelling

Carbothermal Reduction Synthesis of Aluminum Nitride from Al(OH)3/C/PVB Slurries Prepared by Three-Roll Mixing

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

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