Obtaining Nanopowder Ligature Briquettes Ni-(SiC+Si3N4) for Modification of Aluminum Alloys

Antonina A. Kuzina; Valentina S. Ruchkina

doi:10.4028/www.scientific.net/KEM.685.558

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 685Obtaining Nanopowder Ligature Briquettes...

Obtaining Nanopowder Ligature Briquettes Ni-(SiC+Si₃N₄) for Modification of Aluminum Alloys

Abstract:

The authors investigated the mechanical mixing and compacting briquettes of nickel powder (particle size 30...75 μm) and nanopowder modifier SiC+Si₃N₄ (particle size 70...100 nanometers), obtained by the azide technology SHS. The mixtures containing 5%, 10%, 15%, 20% of the modifier were investigated. Mechanical mixing was carried out during 60 minutes in planetary mill «Pulverizette-5». Some physic-technological properties of the obtained powder mixtures, such as, particle size distribution, density, bulk weight and flowability, are determined. The powder compositions' pressing was carried out on hydraulic press PSU-50 with pressure 65...700 MPa. Nanopowder ligature briquettes of 18.2 mm diameter, height to 4.2 mm, weighing 5 grams, with relative density 70...89% and porosity 11...30%, intended for subsequent input in aluminum melt with the aim of modification are obtained.

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High Technology: Research and Applications 2015

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Key Engineering Materials (Volume 685)

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558-562

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.685.558

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Online since:

February 2016

Authors:

Antonina A. Kuzina*, Valentina S. Ruchkina

Keywords:

Bulk Weight, Fluidity, Mechanical Mixing, Modification, Nanopowder, Nickel Powder, Particle Size Distribution, Porosity, Pressing, Relative Density, Silicon Carbide, Silicon Nitride

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