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Showing 1 to 11 of 11 for “"powder compaction"”.
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Thermomechanical modelling of powder compaction and sintering
… model for cold forming of ceramic powders and subsequent sintering is introduced and based on micromechanical modelling of the compaction process of granulates. Micromechanics is shown to yield an upper-bound estimate to the compaction curve of a granular material, which compares …
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Fabrication of 316L stainless steel (SS316L) foam via powder compaction method
… Porous 316L stainless steel was fabricated by powder metallurgy route with the composition of the SS316L metal powder as metallic material, polyethylene glycol (PEG) and Carbamide as the space holder with the composition of 95, 90, 85, 80, and 75 of weight percent (wt. %). The powders were …
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A new constitutive model for the finite element analysis of metal powder compaction
During the commercial compaction of metal powder in a punch-die setup and the subsequent sintering of the compacted preform, the large confining pressures, friction and heat that arise determine the properties of the final component. An important application of the modelling of metal powder …
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A study of brittle powder compaction using a combined discrete finite element approach
… and implemented for the pre-processor. The cold compaction process is idealised as the compaction of a granular medium, in which each particle is a deformable polygon. Two algorithms are proposed and implemented to generate randomly shaped polygons. A further algorithm was developed to fill a …
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Modeling picking on pharmaceutical tablets
… the production of pharmaceutical tablets by powder compaction is sticking of powder to the punch face, This is known as 'sticking'. A more specialized case of sticking is picking when the powder is pulled away form the compact in the vicinity of debossed features. In the pharmaceutical …
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Study of polymeric film bonding for pharmaceutical applications
… tablets - solution-making, casting, and compaction - to transform polymer based thin-films into tablets. By utilizing the interdiffusion model of polymer adhesion from past studies, we combine the base polymer HPMC (hydropropyl methyl cellulose) with varying amounts of a popularly used …
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Influence of alkali resistant (AR) glass in porcelain clay for vitrified clay pipes
… and 12 wt%. The sample was prepared by using powder compaction and then fired for 2 hours at 900°C, 1000°C 1100°C and 1200°C. Based on the chemical analysis, it was found that SiO2, Al2O3, Na2O and K2O is the significant element to produce the material. Result of thermal analysis shows that …
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On the Compaction of Granular Matter; Continuum and Discrete Numerical Modelling
… from assemblies of large rocks to the finest of powders. Nonetheless, compared to fluids and solids, our understanding of granular materials remains limited, because the macroscopic mechanical behaviour of a granular material strongly depends on the interplay between the mechanical properties and …
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Synthesis, characterization, and properties of carbide dispersion-strengthened tungsten alloys for use as a plasma-facing material in nuclear fusion reactors
… properties. Through the advent of advanced powder processing techniques such as Spark plasma sintering, dense, fine-grained tungsten samples can be developed with these microalloyed microstructures. Spark plasma sintering is a powder compaction technique that provides high pressure and …
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Deciphering the role of dispersoids in dispersion-strengthened tungsten alloys on the mechanical properties and irradiation- driven response under nuclear fusion reactor-relevant conditions
… of tungsten. Through the advent of advanced powder processing techniques such as spark plasma sintering, dense, fine-grained tungsten samples can be developed with these microalloyed microstructures. Spark plasma sintering is a powder compaction technique that provides high pressure and …
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A STUDY OF COMPRESSION DIE DESIGN ON THE COMPACTION OF PHARMACEUTICAL POWDER
… and tooling design. Tableting die is part of the compaction tooling and determines tablet size and shape. Dies with modified designs could potentially address tablet compaction issues, such as low tensile strength and elastic recovery, without the need for formulation changes or reduction in …